The area of a triangle is calculated by multiplying the base of the triangle by the height and dividing by 2. Therefore, the number of sides of the triangle is relevant to calculating its area.
What is triangle?Triangle is a three-sided polygon that is considered one of the most basic shapes in geometry. It is composed of three line segments that intersect at three points called vertices. The angles formed by the three line segments are the angles of the triangle. A triangle has three sides, three angles, and three vertices. Depending on the length of the sides and the angles, triangles can be classified as acute, right, or obtuse. Acute triangles have all three angles measuring less than 90 degrees, right triangles have one angle measuring 90 degrees, and obtuse triangles have one angle measuring more than 90 degrees. Triangles are also classified by their sides, such as equilateral, isosceles, and scalene. An equilateral triangle has three equal sides and three equal angles, an isosceles triangle has two equal sides and two equal angles, and a scalene triangle has three sides and three angles that are all different. Triangles are used in many areas of mathematics and are seen in many engineering structures and designs.
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The area of a triangle is calculated by multiplying the base of the triangle by the height and dividing by 2. Therefore, the number of sides of the triangle is relevant to calculating its area.
What is triangle?Triangle is a three-sided polygon that is considered one of the most basic shapes in geometry. It is composed of three line segments that intersect at three points called vertices. The angles formed by the three line segments are the angles of the triangle. A triangle has three sides, three angles, and three vertices. Depending on the length of the sides and the angles, triangles can be classified as acute, right, or obtuse. Acute triangles have all three angles measuring less than 90 degrees, right triangles have one angle measuring 90 degrees, and obtuse triangles have one angle measuring more than 90 degrees.
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Complete Question:
Place a checkmark by the situations that indicate area1 is a triangle.
7: find the domain and range of these functions. (10 pts in total) (a) the function that assigns to each pair of nonnegative integers the first integer of the pair. (b) the function that assigns to each positive integer its largest decimal digit. (c) the function that assigns to a bit string the number of ones minus the number of zeroes in the string. (d) the function that assigns to each positive integer the largest integer not exceeding the square root of the integer. (e) the function that assigns to a bit string the longest string of ones in the string. 7
a) The domain of the function is {0,1,2,3,4,...}. The range is also a non-negative integer.
b) The largest decimal digit is 9, thus the domain of the function is all positive integers and the range is {9}.
c) The domain of the function is all bit strings of length n and the range is all integers between -n and n.
d) The domain of the function is all positive integers and the range is also all positive integers.
e) The domain of the function is all bit strings and the range is a non-negative integer.
Domain and range of the function that assigns to each pair of non-negative integers the first integer of the pair.In the given problem, (a) the function that assigns to each pair of non-negative integers the first integer of the pair. The first integer of the pair is always non-negative. Therefore, the domain of the function is {0,1,2,3,4,...}. The range is also a non-negative integer.
Domain and range of the function that assigns to each positive integer its largest decimal digit. In this problem, (b) the function that assigns to each positive integer its largest decimal digit. For all positive integers, the largest decimal digit is 9, thus the domain of the function is all positive integers and the range is {9}.
Domain and range of the function that assigns to a bit string the number of ones minus the number of zeroes in the string.In the problem, the function that assigns to a bit string the number of ones minus the number of zeroes in the string. The possible bit strings have a length of n. Therefore, the domain of the function is all bit strings of length n and the range is all integers between -n and n.
Domain and range of the function that assigns to each positive integer the largest integer not exceeding the square root of the integer.In the given problem, the function that assigns to each positive integer the largest integer not exceeding the square root of the integer. Let’s say f(n) is the largest integer not exceeding the square root of n, then the domain of the function is all positive integers and the range is also all positive integers.
Domain and range of the function that assigns to a bit string the longest string of ones in the string.In the given problem, the function that assigns to a bit string the longest string of ones in the string. In this case, the domain of the function is all bit strings and the range is a non-negative integer.
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What is the probability of
drawing a face card, then
drawing a heart with
replacement
Answer:
n(s) =52. n(f) = 12 n(h) = 13
p (f)= 13/52. p(f)= 12/52
how to integrate directly using substitution given the same initial condition does this match your taylor series
The integration of the given function using substitution and matching it with the Taylor series is equal to 4/3.
Step 1: Find the Taylor series of the given function f(x).
f(x) = e^(x^2)cos(x)
Therefore, we can say that the Taylor series of the given function is: f(x) = 1 + x^2 + (1/2)x^4 + (1/6)x^6 + (1/24)x^8 + ...
Step 2: Substitute the required value of x into the Taylor series. Let us substitute x = 1 into the Taylor series we got above.
f(1) = 1 + 1^2 + (1/2)1^4 + (1/6)1^6 + (1/24)1^8 + ...
f(1) = 1 + 1 + (1/2) + (1/6) + (1/24) + ...
Step 3: Simplify the expression to get the answer. We can simplify the above expression by using the formula for the sum of an infinite geometric series. The formula is given as follows:
Sum of infinite geometric series = a / (1 - r), where a is the first term and r is the common ratio. Here, a = 1 and r = 1/4. Sum of the series = a / (1 - r) = 1 / (1 - 1/4) = 4/3.
Therefore, we can say that the integration of the given function using substitution and matching it with the Taylor series is equal to 4/3.
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To save for retirement, Ed is investing 14.286 thousand dollars this year. Write the function R(t) that shows the stream of money flowing into Ed's investment account under each of the following circumstances. Assume a continuous income stream. Do NOT round any values (a) Ed continues to invest the same amount each year for the next 20 years. R(t)-14.286thousand dollars per year (b) Ed increases his investment by 3.75 thousand dollars per year over the next 20 years. A(t)-18.036 | X thousand dollars per year (c) Ed increases his investment by 3.75% each year over the next 20 years. R(t)- thousand dollars per year
(a) Since Ed continues to invest the same amount each year for the next 20 years, the function R(t) will be constant and equal to 14.286 thousand dollars per year:
R(t) = 14.286
(b) Since Ed increases his investment by 3.75 thousand dollars per year over the next 20 years, the function R(t) will be a linear function of time, with a slope of 3.75 and an initial value of 14.286:
R(t) = 14.286 + 3.75t
(c) Since Ed increases his investment by 3.75% each year over the next 20 years, the function R(t) will be a geometric sequence, with a common ratio of 1.0375 and an initial value of 14.286:
R(t) = 14.286 * (1.0375)^t
Note that since the function is continuous, we could also use the continuous growth formula [tex]R(t) = 14.286 * e^{0.0375t}[/tex] to model the investment stream.
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Solve each equation and verify the solution.Please heeelp
We have established that the answer to the equation, [tex]x = 24/7[/tex] , is that the left side equals the right side.
What is the equation in algebra?The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation [tex]3x + 5 = 14[/tex] consists of the two equations [tex]3x + 5[/tex] and 14, which are separated by the 'equal' sign.
The equation is as follows:
[tex]\frac{1}{2}\times (x-2)+ 1+2/3x-3[/tex]
This equation can be made simpler by first merging like terms:
[tex]\frac{1}{2}\times (x-2)+ 1+2/3x-3[/tex]
[tex]= 1/2x + 2/3x - 4[/tex]
[tex]= 7/6*x - 4[/tex]
As a result, the equation becomes [tex]7/6*x - 4 = 0.[/tex]
We can now get the value of x by multiplying both sides by 6/7 after adding 4 on both sides: [tex]7/6*x = 4 x = 24/7.[/tex]
We rewrite the original equation with x = 24/7 to confirm the solution:
[tex]1/2*(24/7-2)+1+2/3(24/7)-3[/tex]
[tex]= 1/2*(10/7)+1+16/21-3[/tex]
[tex]= 5/7+1-2/3[/tex]
[tex]= 6/7[/tex]
Therefore, 6/7 demonstrates the equality.
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The sail of a boat is in the shape of a right triangle. which expression shows the height, in meters, of the sail? the sail of a boat is a right triangle with an acute angle equal to 40 degrees and the side adjacent to the 40 degrees angle is 2 meters long. 2(sin 40°) sine 40 degrees over 2 2(tan 40°) tangent 40 degrees over 2
The expression shows the height, in meters, of the sail is 2(sin 40°) (option A)
One way to approach this problem is to use the sine function.
We know that sin(40 degrees) is equal to the length of the side opposite angle 40 degrees divided by the length of the hypotenuse. In other words, sin(40 degrees) = b/c.
We want to find the length of the segment that drops from the top of the sail to side a, which we will call h.
This segment is the side adjacent to angle 40 degrees, so we can use the cosine function to relate it to the length of side b. Specifically, cos(40 degrees) = h/b. Solving for h, we get
h = 2 x sin(40 degrees) = 2(sin 40°)
Hence the option (A) is correct.
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A system of equations is graphed on the coordinate plane.
A student concludes that the solution of the system is (-0.5, 1.5).
Is this correct? Justify your response.
The correctness of the student's solution, we need to have the equations of the system.
A system of equations is graphed on the coordinate plane. A student concludes that the solution of the system is (-0.5, 1.5). Is this correct? Justify your response.To conclude that a system of equations has a solution in the coordinate plane, a set of ordered pairs (x, y) should satisfy both equations in the system of equations. That is, the system of equations should have a point (x, y) that is a solution of both equations.Only by testing the solution in the given system of equations can we know if the student's conclusion is correct. If the solution is satisfied by the system of equations, then the answer is true. Otherwise, it is false. However, since no system of equations is provided in the question, we cannot test the student's solution.To justify the correctness of the student's solution, we need to have the equations of the system.
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dayna writes the integers 1,2,3,4,5,6,7,8,9,10,11,12 on a chalkboard, then she erases the integers from 1 through 6, as well as their multiplicative inverse $\mod{13}$. what is the only integer dayna does not erase?
The integers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 have been written on a chalkboard by Dayna. She then erased the integers from 1 through 6, as well as their multiplicative inverse $\mod{13}$.
We can find the multiplicative inverse of an integer { a modulo 13 } by using the extended Euclidean algorithm.The integers from 1 to 6 are 1, 2, 3, 4, 5, and 6.The multiplicative inverse of : 1 modulo 13 is 1, 2 modulo 13 is 7, 3 modulo 13 is 9, 4 modulo 13 is 10, 5 modulo 13 is 8, and 6 modulo 13 is 11.The only integer that Dayna does not erase is 12.
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Alfonso wants to purchase a pool membership for the summer. He has no more than y dollars to
spend. The Aquatics Club charges an initial fee
of $75 plus $20 per month. The Swimming Hole
charges an initial fee of $15 plus $65 per month.
Write a system of inequalities that you can use to
determine which company offers the better deal.
Let x represent the number of months.
Answer:
Let A represent the cost of purchasing a pool membership from the Aquatics Club and let S represent the cost of purchasing a pool membership from the Swimming Hole. Then, we can write the following system of inequalities:
A ≤ y
A = 75 + 20x
S ≤ y
S = 15 + 65x
The first two inequalities represent the cost of purchasing a membership from the Aquatics Club, while the last two represent the cost of purchasing a membership from the Swimming Hole. The inequalities ensure that the cost of purchasing a membership from either company does not exceed Alfonso's budget of y dollars.
you are going to play mini golf. a ball machine that contains 19 green golf balls, 24 red golf balls, 20 blue golf balls, and 20 yellow golf balls, randomly gives you your ball. what is the probability that you end up with a green golf ball? express your answer as a simplified fraction or a decimal rounded to four decimal places.
The probability of getting a green golf ball from the machine is 19/83 or 0.2289. The result is obtained by the number of green golf balls divided by the total number of golf balls.
How to calculate probability?Probability of an event can be calculated by
P(A) = n(A) / n(S)
Where
P(A) is the probability of an event An(A) is the number of favorable outcomesn(S) is the total number of events in the sample spaceYou have 19 green golf balls, 24 red golf balls, 20 blue golf balls, and 20 yellow golf balls.
Find the probability of getting a green golf ball from the machine!
The total number of golf balls in the machine is
n(S) = 19 + 24 + 20 + 20 = 83 balls
You will end up with a green golf ball with the probability of
P(A) = n(A) / n(S)
P(A) = 19/83
P(A) = 0.2289
Hence, the probability that you will end up with a green golf ball is 19/83 or 0.2289.
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using the net below find the area of the triangular prism
6 cm
3 cm
4 cm
6 cm
5 cm
2 cm
Answer:153
Step-by-step explanation:
P(A) = 1/2 P(B) = 3/4 and P(A U B) = 3/8 Find P(A n B)
Answer:
P(A n B) = 1/4
Step-by-step explanation:
We know that:
P(A U B) = P(A) + P(B) - P(A n B)
Substituting the given values, we get:
3/8 = 1/2 + 3/4 - P(A n B)
Simplifying, we get:
P(A n B) = 1/4
Answer: P ( A n B ) = 7/8
Step-by-step explanation: P ( A U B ) = P(A) + P(B) - P( A n B )
3/8 = 1/2 + 3/4 - P( A n B )
3/8 = 5/4 - P ( A n B )
P ( A n B ) = 5/4 - 3/8
P ( A n B ) = 7/8
For each of the following elementary matrices, describe the corresponding elementary row operation and write the inverse.
a. E = 1 0 3
0 1 0
0 0 1
b. E = 0 0 1
0 1 0
1 0 0
c. E = 1 0 0
0 1/2 0
0 0 1
d. E = 1 0 0
-2 1 0
0 0 1
e. E = 0 1 0
1 0 0
0 0 1
f. E = 1 0 0
0 1 0
0 0 5
In the given elementary matrix, the corresponding elementary row operation is multiplication of the second row of a given matrix with a scalar of 5. The given matrix is an elementary matrix because it can be obtained by multiplying an identity matrix by an elementary matrix. The inverse of the given matrix can be obtained by multiplying a scalar of 1/5 to the second row of the identity matrix.
The given elementary matrix is:
[1 0 0]
[0 0 5]
[0 1 0]
The corresponding elementary row operation for this matrix is multiplication of the second row of a given matrix with a scalar of 5. This means that if we have a matrix A and we multiply the second row of A with a scalar of 5, we get a new matrix B which is represented by the above elementary matrix.
The inverse of the given matrix is:
[1 0 0]
[0 1/5 0]
[0 0 1]
The inverse of a given elementary matrix can be obtained by applying the inverse of the corresponding elementary row operation to an identity matrix. In this case, the inverse of the given elementary matrix can be obtained by multiplying a scalar of 1/5 to the second row of the identity matrix. This gives us the above inverse matrix.
Therefore, the corresponding elementary row operation for the given matrix is multiplication of the second row of a given matrix with a scalar of 5 and the inverse of the given matrix is:
[1 0 0]
[0 1/5 0]
[0 0 1]
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Solve for x and y.
8
7
X
y
By answering the presented question, we may conclude that Therefore, the solution to the system of equations is: x = 36/31 and y = 57/31.
What is equation?In mathematics, an equation is a statement stating the equivalence of two expressions. An equation generally made up of two sides delimited by a system of equations (=). For example, the argument "2x + 3 = 9" states that the word "2x Plus 3" equals the integer "9". The objective of equation solving is to identify the amount or amounts of the variables ( independent variables) that will allow this equation to really be true. Mathematics can be simple or complex, regular or quadratic, and contain one or more parts. In the equation "x2 + 2x - 3 = 0," for illustration, the variable x is elevated to the second power. Lines are employed in numerous different fields of mathematics, including arithmetic, calculus, and geometry.
From the given system of equations, we have:
[tex]8x + 7y = 17 ...(1)\\x - 3y = -5 ...(2)\\x = 3y - 5 ...(3)\\8(3y - 5) + 7y = 17\\24y - 40 + 7y = 17\\31y = 57\\y = 57/31\\x = 3(57/31) - 5\\x = 36/31[/tex]
Therefore, the solution to the system of equations is:
x = 36/31 and y = 57/31.
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The solution to the system of equations is: x = 36/31 and y = 57/31.
What is equation?In mathematics, an equation is a statement stating the equivalence of two expressions. An equation generally made up of two sides delimited by a system of equations (=). For example, the argument "2x + 3 = 9" states that the word "2x Plus 3" equals the integer "9". The objective of equation solving is to identify the amount or amounts of the variables ( independent variables) that will allow this equation to really be true. Mathematics can be simple or complex, regular or quadratic, and contain one or more parts. In the equation [tex]"x^2 + 2x - 3 = 0,[/tex]" for illustration, the variable x is elevated to the second power. Lines are employed in numerous different fields of mathematics, including arithmetic, calculus, and geometry.
From the given system of equations, we have:
[tex]$\begin{aligned} & 8 x+7 y=17 \ldots(1) \\ & x-3 y=-5 \ldots(2) \\ & x=3 y-5 \ldots(3) \\ & 8(3 y-5)+7 y=17 \\ & 24 y-40+7 y=17 \\ & 31 y=57 \\ & y=57 / 31 \\ & x=3(57 / 31)-5 \\ & x=36 / 31\end{aligned}$[/tex]
Therefore, the solution to the system of equations is:
x = 36/31 and y = 57/31.
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find the long leg: b =
Answer:
b ≈ 12.1
Step-by-step explanation:
using the tangent ratio in the right triangle
tan60° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{b}{7}[/tex] ( multiply both sides by 7 )
7 × tan60° = b , then
b ≈ 12.1 ( to the nearest tenth )
can you find another way to solve this problem without using the original one.
The area of the isosceles trapezoid is 37.25 unit².
What is isοsceles trapezοid?An isοsceles trapezοid is a trapezοid with cοngruent base angles and cοngruent nοn-parallel sides. A trapezοid is a quadrilateral with οnly οne side parallel.
An isοsceles trapezοid can be defined as a trapezοid whοse nοn-parallel sides and base angles have the same measure. That is, if the twο οppοsite sides (bases) οf a trapezοid are parallel and the twο nοn-parallel sides are οf equal length, it is an isοsceles trapezοid. See the diagram belοw.
Area of trapezium = 1/2(h)(a + b)
where h = height
a = smaller base = 10
b = larger base = 15
Now to find height, we see a triangle at the end of trapezium, draw the imaginary altitude
Now, the base = 5/2 ⇒(15 - 10= 5)/2
= 2.5
Using trigonometry ratio
tan(θ) = Height/ Base
tan(40°) = Height/ 2.5
0.8391 = Height/ 2.5
Height = 2.5/ 0.8391
Height ≈ 2.98
Now, The area = 1/2(2.98)(10 + 15)
= 1/2(2.98)(10 + 15)
= 37.25 unit²
Thus, The area of the isosceles trapezoid is 37.25 unit².
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a rectangle is drawn around a sector of a circle as shown. if the angle of the sector is 1 radian and the area of the sector is , find the dimensions of the rectangle, giving your answers to the nearest millimetre
The dimensions of the rectangle is 1mm x 0.5mm.
The area of a sector of a circle can be calculated using the formula A = (1/2)*r2*θ,
where r is the radius of the circle and
θ is the angle of the sector.
Therefore, the area of the sector given in the question is A = (1/2)*r²*1, where r = 1.
Since the rectangle has the same area as the sector,
the area of the rectangle can be calculated as A = l*w,
where l is the length and
w is the width.
This equation can be rearranged to give l = A/w,
where A = (1/2) and w is the width.
Substituting the values for A and w into the equation gives l = (1/2) / w.
Since the width of the rectangle is the same as the radius of the circle,
w = 1.
Therefore, the length of the rectangle is l = (1/2), which gives the dimensions of the rectangle as 1mm x 0.5mm, rounded to the nearest millimeter.
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Question
Find the value of y
for the given value of x
.
y=1−2x;x=9
Answer:
y=-17
Step-by-step explanation:
1-2(9)=1-18=-17
Answer: y = -17
Step-by-step explanation:
Using PEMDAS, you need to do the multiplication first. 2 times x is 18, because the value of x is 9. You will then get 1 - 18. This is -17, so y = -17. I hope that this helped! :)
an aquarium has a rectangular base that measures 100 cm by 40 cm and has a height of 50 cm. the aquarium is filled with water to a depth of 37 cm. a rock with volume $1000 \text{cm}^3$ is then placed in the aquarium and completely submerged. by how many centimeters does the water level rise? express your answer as a decimal to the nearest 100th.
The water level in the aquarium rises by (A) 0.25.
The volume of water in the aquarium before the rock is added is:
100 cm x 40 cm x 37 cm = 148000 cm^3
When the rock is added, its volume is 1000 cm^3, so the total volume of water and the rock is:
148000 cm^3 + 1000 cm^3 = 149000 cm^3
To find the new water level, we need to divide the total volume by the base area of the aquarium:
149000 cm^3 ÷ (100 cm x 40 cm) = 37.25 cm
Therefore, the water level rises by:
37.25 cm - 37 cm = 0.25 cm
So the answer is (A) 0.25.
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Your question is incomplete, but probably the complete question is :
An aquarium has a rectangular base that measures 100 cm by 40cm and has a height of 50cm. The aquarium is filled with water to a depth of 37 cm. A rock with volume 1000cm^3 is then placed in the aquarium and completely submerged. By how many centimeters does the water level rise?
(A) 0.25
(B) 0.5
(C)
(D)1.25
(E) 2.5
Use the following points to find the slope.
(1, -1)
(4, 8)
Use the slope and one of the points to find the y-intercept.
Write the final formula.
*
Answer:
the formula is -xcomma y because I there is y intercept then there x will be negative. not y
The coordinates of the vertices of quadrilateral HIJK are H(1,4), I(3,2), J(-1,-4), and K(-3,-2). If quadrilateral HIJK is rotated 270 about the origin, what are the vertices of the resulting image, quadrilateral H’ I’ J’ K’
The vertices of the resulting image, quadrilateral H’ I’ J’ K’ include the following:
H' (4, -1).
I' (2, -3).
J' (-4, 1).
K' (-2, 3).
What is a rotation?In Mathematics, a rotation is a type of transformation which moves every point of the object through a number of degrees around a given point, which can either be clockwise or counterclockwise (anticlockwise) direction.
In Geometry, rotating a point 270° about the origin would produce a point that has the coordinates (y, -x).
By applying a rotation of 270° about the origin to quadrilateral HIJK, the location of its vertices is given by:
(x, y) → (y, -x)
Ordered pair H (1, 4) → Ordered pair H' (4, -(1)) = (4, -1).
Ordered pair I (3, 2) → Ordered pair I' (2, -(3)) = (2, -3).
Ordered pair J (-1, -4) → Ordered pair J' (-4, -(-1)) = (-4, 1).
Ordered pair K (-3, -2) → Ordered pair K' (-2, -(-3)) = (-2, 3).
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Find the product of (7-8x)(3x^3-2x^2+x)
Answer:
Step-by-step explanation:
To find the product of (7-8x)(3x^3-2x^2+x), we need to use the distributive property of multiplication over addition/subtraction.
First, let's distribute the 7 across the second factor:
(7)(3x^3) - (7)(2x^2) + (7)(x)
This simplifies to:
21x^3 - 14x^2 + 7x
Next, we need to distribute the -8x across the second factor:
(-8x)(3x^3) + (-8x)(-2x^2) + (-8x)(x)
This simplifies to:
-24x^4 + 16x^3 - 8x^2
Now, we can combine the two simplifications:
(7-8x)(3x^3-2x^2+x) = 21x^3 - 14x^2 + 7x - 24x^4 + 16x^3 - 8x^2
Finally, we can combine like terms to simplify the expression:
-24x^4 + 37x^3 - 22x^2 + 7x
Therefore, the product of (7-8x)(3x^3-2x^2+x) is -24x^4 + 37x^3 - 22x^2 + 7x.
A company that chipe crystal bowis claims that bowls anive undamaged in 95 percent of the shipments. Let the randomi variable represent the number of shipments with undamaged bowis in 25 randomly elected shipments, Fandom variable Grotows a binomial distribution with a mean of 23.75 shipments and a standard deviation of approximately 1.09 shipments. Which of the following is the best interpretation of the mean?A. Every shipment of 25 bowls will have 23.75 undamaged bowlsB. Every slypment of 25 bowls will have 23.75 damaged bowl.C. On average the company receives 23.25 is before receiving the first her with a damaged bowlD. For possible shipments of 25 average number of damaged shipment equal to 23.75E. for all possible shipment of size 25 the average number of undamaged shipment equal to 23.75
The best interpretation of the mean is A) "Every shipment of 25 bowls will have 23.75 undamaged bowls."
The question states that the company claims that 95% of their shipments arrive undamaged. This implies that the probability of a bowl being damaged in a shipment is 0.05.
Since the random variable G follows a binomial distribution with n=25 (number of shipments) and p=0.05 (probability of a shipment having a damaged bowl), the mean of G is given by np = 25 x 0.05 = 1.25.
However, the question asks about the number of undamaged bowls in a shipment, which is simply the number of bowls in a shipment minus the number of damaged bowls.
Therefore, the mean number of undamaged bowls in a shipment is 25 - 1.25 = 23.75. This means that on average, a shipment of 25 bowls will have 23.75 undamaged bowls.
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57
Exhibit 18-2
Students in statistics classes were asked whether they preferred a 10-minute break or to get out of class 10 minutes early. In a sample of 150 students, 40 preferred a 10-minute break, 80 preferred to get out 10 minutes early, and 30 had no preference. We want to determine if there is a difference in students' preferences.
Refer to Exhibit 18-2. The test statistic based on the number of students who preferred to get out early equals
Group of answer choices
1.825
0.67
0.82
3.65
The test statistic based on the number of students who preferred to get out early equals 3.65.
What is a test statistic?A test statistic is a numerical summary of the sample data that is employed to determine the strength of the evidence for a hypothesis. It is a quantitative measure that compares the observed data to the hypothesis. The t-value, Z-score, F-value, and chi-squared value are examples of common test statistics. In statistical hypothesis testing, a test statistic is used to make decisions about whether or not to reject the null hypothesis.
Based on the given problem, the number of students who preferred to get out of class early is 80, while the number of students who preferred a 10-minute break is 40. Hence, the number of students who had no preference is 30.
Now, we will find the test statistic based on the number of students who preferred to get out of class early as follows:
Test Statistic = (Observed Value - Expected Value) / Standard Deviation
To find the observed value, we need to calculate the proportion of students who preferred to get out of class early in the sample as follows:
Proportion of students who preferred to get out of class early = 80 / (150-30)= 80 / 120= 0.67
Therefore, the observed value is 0.67.
To find the expected value, we need to assume that there is no difference in students' preferences, and the proportion of students who preferred to get out of class early is the same as the proportion of students who preferred a 10-minute break.
Expected value = Proportion of students who preferred to get out of class early * Total number of students= 0.5 * 150= 75
Therefore, the expected value is 75.
To find the standard deviation, we need to use the formula for the standard deviation of a proportion as follows:
Standard Deviation = √[(p*q) / n]
where p is the proportion of students who preferred to get out of class early, q is the proportion of students who preferred a 10-minute break, and n is the total number of students.
Standard Deviation = √[(80/120)*(40/120) / 150]= √(0.1778 / 150)= 0.048
Therefore, the standard deviation is 0.048.
Now, we will substitute the values in the formula for the test statistic as follows:
Test Statistic = (0.67 - 0.5) / 0.048= 3.65
Therefore, the test statistic based on the number of students who preferred to get out early equals 3.65.
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Describe the relationship between n and 4 that makes the equation 7 x n/4 greater that 7
An Inequality is a relationship between two expressions or values that aren't equal. The relationship between n and 4 is given by the inequality n> 4.
We want to find a relation between n and 4 similar that
7 *( n/ 4)> 7
still, we get
If we now divide both sides of the former inequality by 7.
7 *( n/ 4)/ 7>7/7
n/ 4> 1
So n/ 4 must be lesser than 1.
A better way to show the relationship is to multiply both sides of the inequality by 4.
4 *( n/ 4)> 4 * 1
n> 4
So the relationship between n and 4 is that n must be lesser than 4.
In mathematics, an inequality is a relationship that results in an unstable comparison of two figures or other fine expressions. It's frequently used to compare two figures on a number line grounded on their size.
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Please help its gone overdue
80 points
Hence, AA"B"Ccoordinates "'s in green are: A" (0, 0), B" (-4, -5), and C" (1, -4).
what is graph ?An illustration of data or mathematical functions is a graph. It is a method for presenting numerical data in a way that is simple to comprehend and interpret. A set of axes, one for each variable being represented, and one or more plots or lines that reflect the data or function being graphed are the main components of a graph. There are many distinct graph kinds, each of which is appropriate for displaying various sorts of data, including line graphs, bar graphs, scatter plots, and pie charts.
given
The axes cannot be identified because they are not specified in the query.
The blue ABC bar graph is as follows:
Using the equation (x, y) (y, -x), rotate AABC 90 degrees clockwise by applying the following transformation to each point:
A(-3, 0) → A' (0, 3) (0, 3)
B(-2, 4) → B' (-4, -2) (-4, -2)
C(1, -1) → C' (1, -1) (1, -1)
The red A'B'C' coordinates are as follows: A' (0, 3), B' (-4, -2), and C' (1, -1).
We take the y-coordinate of each point and subtract 3 to translate AA'B'C' three units down:
A' (0, 3) → A" (0, 0) (0, 0)
B' (-4, -2) → B" (-4, -5) (-4, -5)
C' (1, -1) → C" (1, -4) (1, -4)
Hence, AA"B"Ccoordinates "'s in green are: A" (0, 0), B" (-4, -5), and C" (1, -4).
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The complete question is:-
1. Label the axes.
2. Graph: A(-3, 0) B(-2, 4) C(1,-1) Draw ABC in blue.
3. Rotate AABC 90° clockwise to
create ▲A'B'C' in red. List the coordinates below:
Formula: (x, y) → (y, -x)
A(-3, 0) A' ()
B(-2, 4)→ B' ()
C(1, -1) C' ()
4. Translate AA'B'C' three units down to create ▲A"B"C" in green. What are the coordinates of AA"B"C"?
14. The perimeter of the table shown is 18 feet. Write an equation
in the form px + q = r to solve for x.
6
Answer:
its 3
Step-by-step explanation:
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Please help it’s for tmr, I only have 0 minute left
Leo has a number of toy soldiers between 27 and 54. If he wants to group them four by four, there are none left, seven by seven, 6 remain, five by five, 3 remain. How many toy soldiers are there?
The answer is 48 but I need step by step explanation
Leo has 48 toy soldiers.
What is the key concept is used to solve the question ?
This problem involves finding a number that satisfies certain conditions related to division with remainders. Specifically, the number must be divisible by 4 with no remainder, must leave a remainder of 6 when divided by 7, and must leave a remainder of 3 when divided by 5.
Calculating the number of toy soldiers :
Let's start by using the first condition to narrow down the possibilities for the number of toy soldiers. We know that the number must be divisible by 4 with no remainder, and it must be between 27 and 54. The multiples of 4 in this range are 28, 32, 36, 40, 44, 48, and 52.
Next, we can use the second condition to eliminate some of these possibilities. If we divide each of these numbers by 7, we get the following remainders:
28 ÷ 7 = 4 remainder 0
32 ÷ 7 = 4 remainder 4
36 ÷ 7 = 5 remainder 1
40 ÷ 7 = 5 remainder 5
44 ÷ 7 = 6 remainder 2
48 ÷ 7 = 6 remainder 6
52 ÷ 7 = 7 remainder 3
The only number in our list that leaves a remainder of 6 when divided by 7 is 48, so we can tentatively conclude that this is the number of toy soldiers.
Finally, we can check the third condition to make sure that 48 leaves a remainder of 3 when divided by 5. Indeed, 48 ÷ 5 = 9 remainder 3, so all of the conditions are satisfied.
Therefore, we can confidently say that Leo has 48 toy soldiers.
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A new business is hiring managers and employees. The company needs at least 20 managers and no more than 500 employees. It must hire a total of at least 400 people. Write a system of linear inequalities to represent the constraints of this situation. Let x represent the number of managers, and let y represent the number of employees.
Answer:
We can represent the constraints of this situation with the following system of linear inequalities:
x ≥ 20 (the company needs at least 20 managers)
y ≤ 500 (the company needs no more than 500 employees)
x + y ≥ 400 (the company must hire a total of at least 400 people)
So the system of linear inequalities is:
x ≥ 20
y ≤ 500
x + y ≥ 400
The prices of consumer goods do not always exactly follow the CPI. The following chart shows several consumer items, along with their respective prices in 1983 and today.ItemPrice in 1983 ($)Current Price ($)Pair of boots67.45126.85Hair dryer15.2529.95Box of tissues1.152.25Toaster22.8544.25Using the prices shown on this chart, which of the following is a reasonable estimate of the current CPI?a. 208b. 195c. 180d. 173
None of the given options (i.e. a, b, c, or d) is correct.
Given the prices of consumer items, we can find the estimate of the current CPI.
The percentage change in the price of the consumer item over time can be given as:
Percentage change = (Current Price − Price in 1983)/Price in 1983 × 100%
Now, using the percentage change we can find the average percentage change (increase or decrease) in prices. We calculate the average percentage change by finding the sum of the percentage change in prices of all items and then dividing it by the number of items.
Thus, we have:
Average percentage change = [(126.85−67.45)/67.45 + (29.95−15.25)/15.25 + (2.25−1.15)/1.15 + (44.25−22.85)/22.85]/4Average percentage change = 4.4188%
Now, the current CPI can be found using the following formula:
Current CPI = CPI in 1983 × [1 + (Average percentage change)/100]Current CPI = 100 × [1 + 4.4188/100] ≈ 104.42 ≈ 104
Therefore, the reasonable estimate of the current CPI is 104.
None of the given options (i.e. a, b, c, or d) is correct.
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