A triangle has vertices at (-4, 0), (2, 8), and (8, 0). Complete the table. Write answers as decimals
rounded to the nearest hundredth, when necessary.
Answers
The coordinate of centroid of the triangle is (2, 8/3), the coordinate of the circumcenter is (-7/32, 121/24) and the coordinate of orthocenter is (2, 9/2)
What is the coordinate of the centroid?a. To find the centroid of a triangle, we take the average of the x-coordinates and the average of the y-coordinates of the vertices. Therefore, the x-coordinate of the centroid is:
(x₁ + x₂ + x₃) / 3 = (-4 + 2 + 8) / 3 = 2
Similarly, the y-coordinate of the centroid is:
(y₁ + y₂ + y₃) / 3 = (0 + 8 + 0) / 3 = 8/3
So the coordinate of the centroid is (2, 8/3).
b. The circumcenter of a triangle is the point where the perpendicular bisectors of the sides of the triangle intersect. To find the circumcenter, we can find the equations of the perpendicular bisectors of any two sides of the triangle and solve for their intersection point.
Let's take the sides formed by vertices (-4, 0) and (2, 8), and vertices (-4, 0) and (8, 0). The midpoint of the first side is ((-4+2)/2, (0+8)/2) = (-1, 4), and the slope of the line passing through the two points is (8-0)/(2-(-4)) = 8/6 = 4/3. Therefore, the equation of the perpendicular bisector passing through (-1, 4) is:
y - 4 = (4/3)(x + 1)
Simplifying this equation, we get:
y = (4/3)x + 13/4
Similarly, the midpoint of the second side is ((-4+8)/2, (0+0)/2) = (2, 0), and the slope of the line passing through the two points is (8-0)/(2-8) = -8/6 = -4/3. Therefore, the equation of the perpendicular bisector passing through (2, 0) is:
y = -(4/3)(x - 2)
To find the intersection point of these two lines, we can set the equations equal to each other and solve for x:
(4/3)x + 13/4 = -(4/3)(x - 2)
x = -7/32
Substituting x = -7/32 into either of the equations, we get:
y = (4/3)(-7/32 + 1) + 4 = 121/24
So the coordinate of the circumcenter is (-7/32, 121/24).
c. The orthocenter of a triangle is the point where the altitudes of the triangle intersect. An altitude of a triangle is a line segment from a vertex of the triangle perpendicular to the opposite side.
Let's take vertex (-4, 0) and find the equation of the line passing through this vertex and perpendicular to the opposite side formed by vertices (2, 8) and (8, 0). The slope of the opposite side is (0-8)/(8-2) = -8/6 = -4/3, so the slope of the line we want is the negative reciprocal of this, which is 3/4. Therefore, the equation of the altitude passing through (-4, 0) is:
y - 0 = (3/4)(x + 4)
Simplifying this equation, we get:
y = (3/4)x + 3
Let's now take vertex (2, 8) and find the equation of the altitude passing through it. The slope of the opposite side formed by vertices (-4, 0) and (8, 0) is (0-0)/(8-(-4)) = 0, which means the altitude passing through (2, 8) is a vertical line passing through (2, 0). Therefore, the equation of this altitude is:
x = 2
Now we need to find the intersection point of these two altitudes. Substituting y = (3/4)x + 3 into the equation x = 2, we get:
y = 9/2
The coordinate of the orthocenter is (2, 9/2)
Learn more on centroid of triangle here;
https://brainly.com/question/7644338
#SPJ1
Related Questions
Solve for x,
using the tangent lines.
13 cm
X
x = [?] cm Remember: a. b = c. d
Answers
The value of x for the given tangent line is 13 cm.
What is tangent line?An extended straight line that intersects only one point on a curve and nowhere else is called a tangent. A circle's tangent is always perpendicular to its radius.
Here, two tangents to the same circle, A (x) and B (13), are subtended from two points on the circle.
So, if two tangents are drawn from a point outside the circle, they will both have the same length when they reach the point of contact inside the circle.
The two tangents in this instance have the same outside point of origin. Thus, based on the above calculation, x = 13 cm.
Hence, the value of x for the given tangent line is 13 cm.
Learn more about tangent lines here:
https://brainly.com/question/28385264
#SPJ1
Is v = [\begin{array}{ccc}1\\1\\3\end{array}\right] an eigenvector of A=[\begin{array}{ccc}1&2&-2\\-2&5&-2\\-6&6&-3\end{array}\right]? If so, find the eigenvalue. Hint: usethe definition of an eigenvalue problem Ax = λx.
Answers
The matrix A with eigenvector v has eigen value equal to -3.
A is the matrix
[tex]A = \left[\begin{array}{ccc}1&2&-2\\-2&5&-2\\-6&6&-3\end{array}\right][/tex]
v is the vector.
[tex]v = \left[\begin{array}{ccc}1\\1\\3\end{array}\right][/tex]
λ is the corresponding eigenvalue
v is an eigenvector of A calculate the corresponding eigenvalue,
Av = λv
Substituting the values of matrix A and eigenvector v , we have,
Calculate left hand side we have,
Av
=
[tex]\left[\begin{array}{ccc}1&2&-2\\-2&5&-2\\-6&6&-3\end{array}\right]. \left[\begin{array}{ccc}1\\1\\3\end{array}\right][/tex]
= [tex]\left[\begin{array}{ccc}-3\\-3\\-9\end{array}\right][/tex]
Now, calculate the right hand side value we have,
λv
= λ[tex]\left[\begin{array}{ccc}1\\1\\3\end{array}\right][/tex]
= [tex]\left[\begin{array}{ccc}\lambda\\\lambda\\3\lambda\end{array}\right][/tex]
Now, Equate both the sides to get the eigen value ,
λ = -3
Therefore, the eigen value of the matrix A for the eigenvector v is equal to -3.
Learn more about eigenvector here
brainly.com/question/11865376
#SPJ4
The above question is incomplete , the complete question is:
Is [tex]v = \begin{bmatrix}1 \ 3\end{bmatrix}[/tex] an eigen vector of [tex]A = \begin{bmatrix}-1 & 1 \ 6 & 0 \end{bmatrix}\\[/tex] . If so, find the eigenvalue. Hint: use the definition of an eigenvalue problem Ax = λx.
Use Euler's method with step size 0.2 to estimate y(1), where y(x) is the solution of the initial-value problem. (Round your answer to four decimal places.) y' = x^2 + xy y(0) = 4
Answers
By using Euler's method with a step size of 0.2, we estimate that y(1) = 4.5429.
The Euler's method is used to estimate a numerical solution of a first-order differential equation. The formula of Euler's method is given by:
y_1 = y_0 + hf(x_0, y_0)
Where: y_1 is the next value of y after one iterationy
0 is the initial value of yy' = f(x, y)h is the step size
This method is an iterative procedure that advances the estimate of y by one step by approximating the curve using a tangent line at each point along the curve.
Given that y(0) = 4 and h = 0.2, we can use Euler's method to estimate y(1) where y(x) is the solution of the initial-value problemy' = x2 + xy, y(0) = 4
Using Euler's method with a step size of 0.2, we get:
1) When x = 0, y = 4
y_1 = y_0 + hf(x_0, y_0) = 4 + 0.2(0 + 4(0))= 4.02
When x = 0.2, y = 4.02
y_2 = y1 + hf(x_1, y_1) = 4.02 + 0.2(0.2^2 + 0.2(4.02))= 4.10523
When x = 0.4, y = 4.1052
y_3 = y_2 + hf(x_2, y_2) = 4.1052 + 0.2(0.4^2 + 0.4(4.1052))= 4.1994144
When x = 0.6, y = 4.1994
4 = y_3 + hf(x_3, y_3) = 4.1994 + 0.2(0.6^2 + 0.6(4.1994))= 4.3032545
When x = 0.8, y = 4.3033
y_5 = y_4 + hf(x_4, y_4) = 4.3033 + 0.2(0.8^2 + 0.8(4.3033))= 4.4174496
When x = 1, y = 4.4174
y_6 = y_5 + hf(x_5, y_5) = 4.4174 + 0.2(1^2 + 1(4.4174))= 4.5429404
Therefore, using Euler's method with a step size of 0.2, we estimate that y(1) = 4.5429 (rounded to four decimal places).
To know more about Euler's method: https://brainly.com/question/14286413
#SPJ11
(24p- 10) + (-22p - 2)
Answers
Answer:
2p - 12
Step-by-step explanation:
(24p - 10) + (-22p - 2)
24p - 10 - 22p - 2
2p - 12
So, the answer is 2p - 12
Megan's standard pay is £17.70 per hour. She gets paid 1.5 times this rate for working overtime. How much will Megan get paid for working 11 hours of overtime? Give your answer to the nearest pound.
Answers
Answer:
Step-by-step explanation:
Overtime Rate = [tex]17.70 \times 1\frac{1}{2}[/tex]
[tex]= 17.70 \times \frac{3}{2}[/tex]
[tex]=\frac{53.10}{2}[/tex]
[tex]=\pounds26.55[/tex]
Pay [tex]=11*26.55=\pounds 292.05[/tex] (I assume you can use a calculator for this)
Solution: [tex]\pounds 292[/tex]
Please help me with the following questions I will give brainiest
Answers
The exponential equation that fits the provided point distribution is [tex]y = 5(2)^x[/tex] . Thus, option A is correct.
What do exponential equations work?An exponential equation is one in which the exponent contains a variable.
For instance, the exponential equation [tex]y = 5x[/tex] has the variable x as the exponent (also known as "5 to the power of x"),
whereas, the exponential equation y = x5 has the number 5 as the exponent instead of a variable, making the latter equation not exponential.
If we calculate the initial differences, we can determine the exponential equation that corresponds to the given pattern of points as follows:
[tex](2-1) = 5[/tex]
[tex](3-2) = 10[/tex]
[tex](4-3) = 20[/tex]
If we calculate the second differences, we obtain:
[tex](10-5) = 5[/tex]
[tex](20-10) = 10[/tex]
The fact that the second differences are constant shows that the exponential equation's coefficient is 5.
Therefore, The exponential equation that fits the provided point distribution is [tex]y = 5(2)^x[/tex] .
Learn more about exponential here:
https://brainly.com/question/29506679
#SPJ1
(HAZARD) Please help what graph represents Y=-2x+4 I will mark you the brainest
Answers
The graph of Y=-2x+4 should look like a downward sloping line that intersects the y-axis at 4.
What is intersect?The term "intersect" typically refers to the point or points where two or more things, such as lines, curves, sets, or geometrical shapes, meet or cross each other. The intersection can be described as the common elements or properties shared by the different objects or sets that intersect.
According to question:The graph of the equation Y=-2x+4 is a straight line with a slope of -2 and a y-intercept of 4. To graph this equation, you can use the slope-intercept form y = mx + b, where m is the slope and b is the y-intercept.
To graph Y=-2x+4, follow these steps:
Plot the y-intercept at (0,4).To locate a different point on the line, use the slope of -2. To do this, move down 2 units and right 1 unit from the y-intercept. This gives you the point (1,2).Between the two points, doodle a straight line.The graph of Y=-2x+4 should look like a downward sloping line that intersects the y-axis at 4.
To know more about intersect visit:
https://brainly.com/question/14217061
#SPJ1
a grade g1 of 3.50% intersects grade g2 of -2.50% and an equal-tangent curve is desired. a two-way road with a design speed is 65 mph. what is the minimum length the curve must have, to comply with stopping sight distance requirements? (assume you can use the k tables for 0%).
Answers
Grade g1 = 3.50% Grade g2 = -2.50% Design speed = 65 mph. The minimum length the curve must have, to comply with stopping sight distance requirements? The minimum length the curve must have, to comply with stopping sight distance requirements is 196.5 ft or 59.88 m.
`Stopping Sight Distance (SSD) The stopping sight distance (SSD) is the minimum distance a vehicle operator needs to be able to see ahead of the vehicle to bring it to a stop before colliding with an object in its path.The minimum stopping sight distance is given by the following equation: SSD = 0.278Vt + V^2/254f + 1.47W. Where,SSD = stopping sight distance, Vt = total stopping distance, V = design speed, W = width of traveled way, and f = friction factor.To comply with stopping sight distance requirements, the stopping sight distance (SSD) must be equal to or greater than the minimum SSD. K-tables for 0% can be used to determine the minimum SSD. Minimum SSD = SSD min = K x V. Where, SSD min = minimum stopping sight distance, V = design speed, K = adjustment factor from the table. We need to find the minimum length of the curve that meets the stopping sight distance requirements.Here, it is required to design a curve that is the combination of two tangents with an intersection angle of 60° and a length sufficient to maintain an SSD value equal to or greater than the minimum value.Curve length formula:L = (a+b)/sin(θ/2)Where,L = length of curve, a = length of first tangent, b = length of second tangent, and θ = intersection angle L = (a + b) / sin (θ / 2)L = (V^2 / 254f x (Kg1 + Kg2) ) / sin (θ / 2)Length of first tangent, a = V x (1.47 + 0.278Kg1) Length of second tangent, b = V x (1.47 + 0.278Kg2) Intersection angle θ = 60° Friction factor f = 0.35 (for asphalt surface)The adjustment factor from the table for 0% = 0.03. So, we have:Length of first tangent, a = 1.47 x 65 + 0.278 x 65 x 3.5. Length of first tangent, a = 113.1. Length of second tangent, b = 1.47 x 65 + 0.278 x 65 x (-2.5). Length of second tangent, b = 105.9L = (V^2 / 254f x (Kg1 + Kg2) ) / sin (θ / 2)L = (65^2 / (254 x 0.35 x (0.03 x (3.5 + (-2.5))))) / sin (60 / 2)L = 196.5 ft = 59.88 m.
For more questions on stopping sight distance
https://brainly.com/question/2444691
I NEED HELP ON THIS ASAP!!
Answers
In response to the stated question, we may state that x + y < 380 (the variable corporation plans to sell at most 380 boards of wood) (the company expects to sell at most 380 boards of wood)
What is a Variable?A variable is anything that may be altered in the context of a mathematical notion or experiment. Variables are frequently denoted by a single symbol. The letters x, y, and z are often used as generic variables symbols.
To indicate the amount of boards of each type of wood sold, consider the following variables:
Let x be the number of mahogany boards sold.
Let y represent the number of black walnut boards sold.
The system of inequalities representing the restrictions of this issue scenario may therefore be represented as follows:
[tex]x < 260[/tex] (the corporation has 260 boards of mahogany) (the company has 260 boards of mahogany)
y ≤ 320 (the corporation has 320 boards of black walnut) (the company has 320 boards of black walnut)
x + y < 380 (the corporation plans to sell at most 380 boards of wood) (the company expects to sell at most 380 boards of wood)
Furthermore, we know that the profit on the sale of the wood is $20 per board for mahogany and $6 per board for black walnut. Let P represent the total profit from the sale of the wood. Then: P = 20x + 6y
We may display the three boundary lines x = 260, y = 320, and x + y = 380 to graph this system of inequalities, and shade the feasible region that meets all three inequalities. The triangle bordered by the x-axis, y-axis, and the line x + y = 380 will be the viable region. Here's a basic idea of how the graph may look:
|
380 - * - - - - - - - - - - - - - - - - - -
| /\
| / \
|/ \
260 - *-------* - - - - - - - - - - - - - - -
0 320
Mahogany Black Walnut
To know more about variable visit:
https://brainly.com/question/2466865
#SPJ1
If the measures, in degrees, of the three angles of a triangle, are x, x+10, and 2x-6, the triangle must be:A. RightB. Equilateral,C. ScaleneD. Isosceles
Answers
The triangle is a scalene triangle.
The measures of the three angles of a triangle are x, x+10, and 2x-6. What type of triangle must it be? The sum of the measures of the three angles in a triangle is 180 degrees, which means that:
x + x + 10 + 2x - 6 = 180
This simplifies to,
4x + 4 = 180,
or 4x = 176, or x = 44
Once we have found x, we can now find the measures of the three angles of the triangle: the first angle is x, which is 44°, the second angle is x+10, which is 54°; and the third angle is 2x-6; which is 82°. A scalene triangle is a triangle with all sides and angles of unequal lengths. Since none of the angles has the same measure, the triangle is scalene. The correct answer is option C. Scalene Triangle.
Learn more about types of triangle: https://brainly.com/question/1058720
#SPJ11
I really need help on this question!
Answers
Answer:
The 2nd table
Step-by-step explanation:
For the first set of x and y values, divide y (9/4) by x(3)
Change 3 to 1/3 due to the keep-change-flip rule and multiply that by 9/4 as 9/4 × 1/3= 9/12 which is equivalent to 3/4
Do the same process with 6 and 9/2 and that should give you 3/4 as well
Therefore the second table of values have a proportional relationship to each other as they have the same quotient.
Hope this helps.
The graph of f(t) = 7•2^t shows the value of a rare coin in year t. What is the meaning of the y-intercept?
Answers
Answer:
When it was purchased (year 0) the coin was worth $7
Step-by-step explanation:
we have
[tex]f(t) = 7(2)^t[/tex]
This is a exponential function of the form
[tex]y=a(b)^x[/tex]
where
a is the initial value
b is the base
In this problem we have
[tex]a=\$7[/tex]
[tex]b=2[/tex]
[tex]b=1+r[/tex]
so
[tex]2=1+r[/tex]
[tex]r=1[/tex]
[tex]r=100\%[/tex]
The y-intercept is the value of the function when the value of x is equal to zero
In this problem
The y-intercept is the value of a rare coin when the year t is equal to zero
[tex]f(0)=7(2)^0[/tex]
[tex]f(0)=\$7[/tex]
therefore
The meaning of y-intercept is
When it was purchased (year 0) the coin was worth $7
Answer:
Value of the coin when it was first released
-------------------------------
The y-intercept is the value of f(0).
Substitute t = 0 and find the y-intercept:
f(0) = 7 · 2⁰ = 7 · 1 = 7This is representing the value of the coin when it was released.
Find the surface area of the rectangular prism.
6 km
4 km
4 km
Answers
Answer: 88km is your answer
Step-by-step explanation: We just had this on a test
PLEASE HELP NOW!!! What would be the experimental probability of drawing a white marble?
Ryan asks 80 people to choose a marble, note the color, and replace the marble in Brianna's bag. Of all random marble selections in this experiment, 34 red, 18 white, 9 black, and 19 green marbles are selected. How does the theoretical probability compare with the experimental probability of drawing a white marble? Lesson 9-3
Answers
The experimental probbaility is 0.225 and the theoretical probability is 0.25
Calculating the experimental probbailityThe experimental probability of drawing a white marble can be calculated by dividing
(1) The number of times a white marble was selected (18)
(2) by the total number of marbles selected (34+18+9+19=80):
So, we have
Experimental probability = 18/80 = 0.225
The theoretical probabilityThe theoretical probability of drawing a white marble can be calculated by dividing the number of white marbles (1) by the total number of marble colors (4).
So, we have
Theoretical probability = 1/4 = 0.25
This means that the theoretical probability is greater than the experimental probability
Read more about probability
https://brainly.com/question/251701
#SPJ1
8. A department store
buys 300 shirts for
a total cost of $7,200 and sells them for
$30 each. Find the percent markup.
Answers
The percent markup is 25%.
What is percent markup?Markup percentage is calculated by dividing the gross profit of a unit (its sales price minus it's cost to make or purchase for resale) by the cost of that unit.
Given that, A department store buys 300 shirts for a total cost of $7,200 and sells them for $30 each.
Cost of one shirt [tex]= 7200 \div 300 = \$24[/tex]
And they sold at $30 each,
Percent markup [tex]= 30-24 \div 24 \times 100[/tex]
[tex]= 25\%[/tex]
Hence, the percent markup is 25%.
Learn more about Markup percentage, click:
https://brainly.com/question/28945726
20m:600cm
Reduce the ratios to its simplest forms
Answers
Answer: 10:3
Step-by-step explanation: convert 600cm to 6m, then we will get 20m:6m, 2*10=20 and 2*3=6. then it will become 10:3
The average between 3. 15 and x is 40 what is x?
Answers
The value of x that makes the average between 3.15 and x equal to 40 is 76.85.
In this problem, we are given two numbers, 3.15 and x, and told that the average between them is 40. We can set up an equation to solve for x as follows:
(3.15 + x) / 2 = 40
To find the average between 3.15 and x, we add the two numbers together and divide by 2, which gives us the equation above.
To solve for x, we can start by multiplying both sides of the equation by 2:
3.15 + x = 80
Next, we can subtract 3.15 from both sides of the equation:
x = 76.85
To know more about average here
https://brainly.com/question/16956746
#SPJ4
Help with geometry with rhombus. Given rhombus ABCD with m
Answers
For the given rhombus the value of x = 3/2 and the measure of angle EAB and angle EBA = 2.5 degrees.
What is a rhombus?A rhombus is a specific instance of a parallelogram. In a rhombus, opposite sides are parallel and the opposite angles are equal. A rhombus also has equal-length sides on each side, and its diagonals meet at right angles to form its shape. The rhombus is also referred to as a diamond or rhombus. Rhombi or rhombuses are the plural forms of rhombus.
The adjacent angles of a rhombus are supplementary, and diagonals bisect the angles.
Using this property we have:
2(7x - 8) + 2(3x - 2) = 180
14x - 16 + 6x - 4 = 180
20x - 20 = 180
x = 180/20
x = 9
Substituting the value of x:
angle EAB = 7(9) - 8 = 55
angle EBA = 3(9) - 2 = 25
Hence, the value of x = 9 and the measure of angle EAB = 55 degrees and angle EBA = 25 degreed.
Learn more about rhombus here:
https://brainly.com/question/9637480
#SPJ1
For the year ending December 31, 2017, sales for Company Y were $78.71 billion. Beginning January 1, 2018 Company Y plans to invest 8.5% of their sales amount each year and they expect their sales to increase by 6% each year over the next three years. Company Y invests into an account earning an APR of 1.5% compounded continuously. Assume a continuous income stream. How much money will be in the investment account on December 31, 2020? Round your answer to three decimal places. billion dollars How much money did Company Y invest in the account between January 1, 2018 and December 31, 2020? Round your answer to three decimal places. billion llars How much interest did Company Y earn on this investment between January 1, 2018 and December 31, 2020? Round your answer to three decimal places. If intermediate values are used, be sure to use the unrounded values to determine the answer. billion dollars
Answers
The initial investment (P) is 19.65205 billion dollars. The annual interest rate (r) is 1.5% expressed as a decimal, which is 0.015 and the time period (t) is 3 years. The amount of money in the investment account on December 31, 2020, will be 21.190 billion dollars. Company Y did not invest any additional money into the account between January 1, 2018, and December 31, 2020 and also Company Y earned 1.538 billion dollars in interest on this investment between January 1, 2018, and December 31, 2020.
Now to calculate the amount of money in the investment account on December 31, 2020, we can use the formula for continuous compound interest:
[tex]A = Pe^{(rt)}[/tex]
Where A is the amount of money in the account at the end of the investment period, P is the initial investment, r is the annual interest rate (APR) expressed as a decimal, and t is the time period in years.
First, let's calculate the total amount of money that Company Y plans to invest over the next three years. We know that they plan to invest 8.5% of their sales amount each year, so the total amount invested will be:
[tex]Investment = 0.085 * Sales * (1 + 1.06 + 1.06^2)[/tex]
[tex]Investment = 0.085 * 78.71 * 3.06[/tex]
[tex]Investment = 19.65205[/tex]billion dollars
So, the initial investment (P) is 19.65205 billion dollars. The annual interest rate (r) is 1.5% expressed as a decimal, which is 0.015. The time period (t) is 3 years.
Using the formula, we get:
[tex]A = Pe^{(rt)}[/tex]
[tex]A = 19.65205e^{(0.0153)}[/tex]
[tex]A = 21.190[/tex] billion dollars
Therefore, the amount of money in the investment account on December 31, 2020, will be 21.190 billion dollars.
To calculate the amount of money that Company Y invested between January 1, 2018, and December 31, 2020, we simply subtract the initial investment from the total investment amount:
Amount invested = Investment - P
Amount invested = 19.65205 - 19.65205
Amount invested = 0 billion dollars
Therefore, Company Y did not invest any additional money into the account between January 1, 2018, and December 31, 2020.
To calculate the interest earned on the investment, we simply subtract the initial investment from the amount of money in the account on December 31, 2020:
Interest earned = A - P
Interest earned = 21.190 - 19.65205
Interest earned = 1.53795 billion dollars
Therefore, Company Y earned 1.538 billion dollars in interest on this investment between January 1, 2018, and December 31, 2020.
To practice more questions about initial investment:
https://brainly.com/question/19090357
#SPJ11
select the acceptable conclusions to a hypothesis test. the value of the test statistic does not lie in the rejection region. therefore, there is insufficent evidence to suggest that the null hypothesis is false. the value of the test statistic lies in the rejection region. therefore, there is sufficient evidence to suggest that the alternative hypothesis is true. the value of the test statistic lies in the rejection region. therefore, there is sufficient evidence to suggest that the null hypothesis is not true. the value of the test statistic does not lie in the rejection region. therefore, there is sufficient evidence to suggest that the null hypothesis is true. the value of the test statistic does not lie in the rejection region. therefore, we accept the null hypothesis.
Answers
The acceptable conclusions of a hypothesis test depend on the test and significance level. If the test statistic falls outside the rejection region, there's insufficient evidence to reject the null hypothesis. If it falls within, there is sufficient evidence to support the alternative hypothesis. The statement is true.
However The acceptable conclusions to a hypothesis test depend on the specific test and the chosen significance level, in general:
The value of the test statistic does not lie in the rejection region. Therefore, there is insufficient evidence to suggest that the null hypothesis is false: This statement is correct. If the test statistic falls outside of the rejection region, we fail to reject the null hypothesis at the given significance level. However, this does not mean that the null hypothesis is true, only that we do not have enough evidence to reject it. The value of the test statistic lies in the rejection region. Therefore, there is sufficient evidence to suggest that the null hypothesis is not true: This statement is also correct. If the test statistic falls within the rejection region, we reject the null hypothesis at the given significance level and conclude that the alternative hypothesis is more likely to be true.Therefore, the acceptable conclusions to a hypothesis test are:
The value of the test statistic does not lie in the rejection region. Therefore, there is insufficient evidence to suggest that the null hypothesis is false. The value of the test statistic lies in the rejection region. Therefore, there is sufficient evidence to suggest that the null hypothesis is not true.The main point of the answer is that the acceptable conclusions to a hypothesis test depend on the specific test and chosen significance level, but generally, if the test statistic falls outside the rejection region, there is insufficient evidence to reject the null hypothesis, and if it falls within the rejection region, there is sufficient evidence to reject the null hypothesis and support the alternative hypothesis.
To learn more alternative hypothesis:
https://brainly.com/question/26185548
#SPJ11
Use the table to answer the following question. The table shows pairs of values for a linear function. A different function is defined by the equation y = 4x. Which of the following statements is TRUE? The functions both have a slope of 4. The functions are both proportional. The functions have opposite slopes. The functions both have a y-intercept of 4.
Answers
A statement which is true include the following: C. The functions have opposite slopes.
What is the slope-intercept form?In Mathematics, the slope-intercept form of the equation of a straight line is represented by this mathematical expression;
y = mx + c
Where:
m represent the gradient, slope, or rate of change.x and y represent the data points.c represent the vertical intercept, y-intercept or initial number.Based on the information provided above, an equation that models one of the function is given by;
y = 4x
mx = 4x
Slope, m = 4.
For the other function, the slope can be calculated as follows;
Slope (m) = (y₂ - y₁)/(x₂ - x₁)
Slope (m) = (0 - 4)/(1 - 0)
Slope (m) = -4/1
Slope (m) = -4.
Read more on slope-intercept here: brainly.com/question/7889446
#SPJ1
Jason and Scott plan on biking to the center of town to get ice cream at the convenience store. Since Scott
had to put air in his tires, Jason was able to get 1 mile ahead of Scott before Scott left the house. Both
bikers rode at a speed of 15 miles per hour.
Write an equation in y = mx + b form that represents Jason's trip. Jason =
a.
Write an equation in y = mx + b form that represents Scott's trip.
Will Jason and Scott meet before they both reach the store? Explain.
If you were to graph both lines on the same coordinate plane, predict what your graph would look
like.
Answers
Answer:
a. Jason's equation in y = mx + b form is y = 15x + 1.
b. Scott's equation in y = mx + b form is y = 15x.
Since both are moving at the same speed, they will meet at the point where their distances from the starting point are the same. Let d be the distance from Scott's starting point to the store. Then, the distance from Jason's starting point to the store is d + 1. Using the formula distance = rate × time, we can set up an equation:
15t = d
15t - 1 = d + 1
Solving for t in both equations, we get t = d/15 and t = (d+2)/15, respectively. Equating these expressions for t, we get d/15 = (d+2)/15, which simplifies to d = -2. This means that they will not meet before reaching the store, as Jason is already 1 mile ahead of Scott and will stay ahead throughout the trip.
If we were to graph both lines on the same coordinate plane, we would have two parallel lines with a slope of 15, where Jason's line would intersect the y-axis at 1.
a college administrator would like to determine how much time students spend on homework assignments during a typical week. a questionnaire is sent to a sample of n=100 student and their response indicates a mean of 7.4 hours per week and standard deviation of 3hours
Answers
Based on the information given, the college administrator has collected a sample of n=100 students and obtained the following statistics: Mean: 7.4 hours per week Standard deviation: 3 hours
Why it is?
These statistics can be used to estimate the average amount of time that all students spend on homework assignments during a typical week, as well as to assess the variability in the data.
To estimate the population mean, the sample mean can be used as an unbiased estimator. This means that the sample mean of 7.4 hours per week is likely a good estimate of the true population mean. However, there is always some uncertainty associated with this estimate due to the fact that it is based on a sample.
To quantify the variability in the data, the standard deviation can be used. A standard deviation of 3 hours indicates that there is a relatively large amount of variability in the amount of time that students spend on homework assignments. Some students may spend significantly more or less time on homework than the average of 7.4 hours per week.
Overall, the college administrator can use this information to gain insights into the amount of time that students spend on homework assignments and to make informed decisions based on this knowledge.
To know more about Statistics related questions, visit:
https://brainly.com/question/29093686
#SPJ1
a 3-digit pin number is selected. what it the probability that there are no repeated digits? the probability that no numbers are repeated is
Answers
The probability that no numbers are repeated = [tex]\frac{720}{1000}=0.72[/tex]
The probability that there are no repeated digits in a 3-digit pin number is 0.72.
Formula used:
[tex]P(n,r)=\frac{n!}{(n-r)!}\\ Probability=\frac{Number of favourable outcomes}{Total number of events in the samples pace}[/tex]
There are 10 digits (0,1,2,3,4,5,6,7,8,9) to choose from.
Therefore, the total number of possible 3-digit pin numbers with no repeated digits is
[tex]P(10,3)=\frac{10!}{(10-3)!}\\P(10,3)= \frac{10!}{7!}\\P(10,3)=720[/tex]
The total number of possible 3-digit pin numbers [tex]= 10 * 10 * 10 = 1000[/tex].
Thus, the probability that no numbers are repeated = [tex]\frac{720}{1000}=0.72[/tex]
Therefore, the probability that there are no repeated digits in a 3-digit pin number is 0.72.
Learn more about probability below
https://brainly.com/question/13604758
Decrease R450 in the ratio 9:8
Answers
Step-by-step explanation:
9+8=17
for ratio 9: 9/17 * 450=R238.24
for ratio 8: 8/17* 450= R211.17
R450 x 9/17 = R238,24
R450 x 8/17 = R211,76
A package is delivered 3 hours 25 minutes after it is collected, it is collected at 15:39
at what time is the package delivered
Answers
Given the data in the question we calculate that the package is delivered at 18:44.
If the package is collected at 15:39 and delivered 3 hours and 25 minutes later, we can add that amount of time to the collection time to find the delivery time.
First, we need to convert 3 hours and 25 minutes to just minutes. To do this, we multiply 3 by 60 (to convert hours to minutes) and then add 25:
3 hours and 25 minutes = (3 × 60) + 25 = 185 minutes
Now we can add 185 minutes to the collection time of 15:39:
15:39 + 185 minutes = 18:44
Therefore, the package is delivered at 18:44. The delivery time of a package is the time it takes for the package to be transported from the sender to the receiver. In this case, the package was collected at 15:39 and delivered 3 hours and 25 minutes later. To find the delivery time, we added the duration of 3 hours and 25 minutes to the collection time. It is important to keep track of delivery times to ensure timely and efficient shipping, especially for time-sensitive or perishable items. Timely delivery is crucial for businesses that rely on shipping to meet customer expectations and maintain customer satisfaction.
To learn more about amount of time click here
brainly.com/question/29823316
#SPJ4
in a large population 54% of the people hav been vaccinated 3 people are randomly selected what is the probability that at least one of them has been vaccinated
Answers
The probability that at least one of the three people has been vaccinated is 92.8%.
Step-by-step explanation: Given, In a large population, 54% of the people have been vaccinated. Then, the probability that one person has been vaccinated is 54/100 = 0.54.
The probability that one person has not been vaccinated is 1 - 0.54 = 0.46. The probability that all three people have not been vaccinated is (0.46)³ = 0.097336. The probability that at least one person has been vaccinated is 1 - 0.097336 = 0.902664. Hence, the probability that at least one of the three people has been vaccinated is 92.8%.
See more about probability at: https://brainly.com/question/13604758
#SPJ11
Five people, A,B,C,D, and E want to line up and take a group photo. However, A and B must stand next to each other since they are a couple. Then, what is the total number of ways they can line up?
Answers
In the following question, among the conditions given,To determine the total number of ways five people, A, B, C, D, and E, can line up with the condition that A and B must stand next to each other since they are a couple, we can apply the concept of "permutations." option A, 48, is the correct answer.
Permutations refer to the number of ways that objects can be arranged in a particular order. It is calculated using the formula P(n, r) = n!/(n-r)!, where n represents the total number of objects and r represents the number of objects to be arranged. According to the question, A and B must stand next to each other, so they can be treated as a single entity. Therefore, we have four entities: AB, C, D, and E. We can arrange these four entities in 4! = 24 ways. However, A and B can switch positions among themselves, so each of these 24 arrangements can be arranged in 2 ways. Thus, the total number of ways that five people, A, B, C, D, and E, can line up with the condition that A and B must stand next to each other is 24 × 2 = 48 ways. Therefore, option A, 48, is the correct answer.
For more such questions on permutations
https://brainly.com/question/1216161
#SPJ11
Evaluate the expression shown below and write your answer as a fraction in simplest form.
-0.25 + 0.3 - ( - 3/10 ) + 1/4
Answers
The evaluation of the expression -0.25 + 0.3 - ( - 3/10 ) + 1/4 is 3 / 5.
How to solve expression?An algebraic expression is made up of variables and constants, along with algebraic operations such as addition, subtraction, division, multiplication etc.
To evaluate an algebraic expression means to find the value of the expression when the variable is replaced by a given number.
Therefore, let's solve the expression as follows:
-0.25 + 0.3 - ( - 3/10 ) + 1/4
let's convert it to fraction
- 1 / 4 + 3 / 10 + 3 / 10 + 1 / 4
Hence,
3 / 10 + 3 / 10 + 1 / 4 - 1 / 4
3 + 3 / 10
6 / 10 = 3 / 5
learn more on expression here: https://brainly.com/question/24178125
#SPJ1
HELP PLEASE … Assuming the input of energy continues for another 2.5 seconds, where will the particle be?
A) cannot be determined
B) positive maximum
C) negative maximum
D) equilibrium
Answers
Answer:
To determine the position of a particle given the input of energy, we need to know the type of energy input and the initial position and velocity of the particle. Without this information, we cannot determine the position of the particle after 2.5 seconds.
Therefore, the answer is A) cannot be determined.
Step-by-step explanation:
ABOVE