Find the area of each shape (Please don’t give me the formula to find the area of each shape, that won’t help.)
Answers
To find the area of the triangle with vertices (9,-1), (6,1), and (6,3), we can use the formula:
[tex]$A = \frac{1}{2} \left| x_1 (y_2 - y_3) + x_2 (y_3 - y_1) + x_3 (y_1 - y_2) \right|$[/tex]
where (x1, y1), (x2, y2), and (x3, y3) are the coordinates of the three vertices.
Plugging in the coordinates, we get:
[tex]$A = \frac{1}{2} \left| 9(1-3) + 6(3-(-1)) + 6((-1)-1) \right|$[/tex]
[tex]$A = \frac{1}{2} \left| -6 + 24 - 12 \right| = \frac{1}{2} \cdot 6 = 3$[/tex]
Therefore, the area of the triangle is 3 square units.
To find the area of the triangle with vertices (0,-8), (0,-10), and (7,-10), we can again use the formula:
[tex]$A = \frac{1}{2} \left| x_1 (y_2 - y_3) + x_2 (y_3 - y_1) + x_3 (y_1 - y_2) \right|$[/tex]
Plugging in the coordinates, we get:
[tex]$A = \frac{1}{2} \left| 0((-10)-(-10)) + 0((7)-0) + 7((-8)-(-10)) \right|$[/tex]
$A = \frac{1}{2} \cdot 14 = 7$
Therefore, the area of the triangle is 7 square units.
To find the area of the triangle with vertices (6,-7), (3,-1), and (-1,4), we can again use the formula:
[tex]$A = \frac{1}{2} \left| x_1 (y_2 - y_3) + x_2 (y_3 - y_1) + x_3 (y_1 - y_2) \right|$[/tex]
Plugging in the coordinates, we get:
[tex]$A = \frac{1}{2} \left| 6((-1)-4) + 3(4-(-7)) + (-1)((-7)-(-1)) \right|$[/tex][tex]$A = \frac{1}{2} \cdot 55 = \frac{55}{2}$[/tex]
Therefore, the area of the triangle is $\frac{55}{2}$ square units.
To find the area of the quadrilateral with vertices (-6,1), (-9,1), (-6,-4), and (-9,-4), we can divide it into two triangles and find the area of each triangle using the determinant method. The area of the quadrilateral is the sum of the areas of the two triangles.
First, we find the coordinates of the diagonals:
$D_1=(-6,1)$ and $D_2=(-9,-4)$
The area of the quadrilateral can be calculated as:
\begin{align*}
\text{Area}&=\frac{1}{2}\left|\begin{array}{cc} x_1 & y_1 \ x_2 & y_2 \end{array}\right| + \frac{1}{2}\left|\begin{array}{cc} x_2 & y_2 \ x_3 & y_3 \end{array}\right|\
&=\frac{1}{2}\left|\begin{array}{cc} -6 & 1 \ -9 & -4 \end{array}\right| + \frac{1}{2}\left|\begin{array}{cc} -9 & -4 \ -6 & -4 \end{array}\right|\
&=\frac{1}{2}\cdot 21 + \frac{1}{2}\cdot 9\
&=\frac{15}{2}\
\end{align*}
Therefore, the area of the quadrilateral is $\frac{15}{2}$ square units.
To find the area of the pentagon with vertices (0,3), (-3,3), (-5,1), (-3,-3), and (-1,-2), we can divide it into three triangles and find the area of each triangle using the determinant method. The area of the pentagon is the sum of the areas of the three triangles.
First, we find the coordinates of the diagonals:
$D_1=(0,3)$ and $D_2=(-1,-2)$
The area of the pentagon can be calculated as:
\begin{align*}
\text{Area}&=\frac{1}{2}\left|\begin{array}{cc} x_1 & y_1 \ x_2 & y_2 \end{array}\right| + \frac{1}{2}\left|\begin{array}{cc} x_2 & y_2 \ x_3 & y_3 \end{array}\right| + \frac{1}{2}\left|\begin{array}{cc} x_3 & y_3 \ x_4 & y_4 \end{array}\right|\
&=\frac{1}{2}\left|\begin{array}{cc} 0 & 3 \ -3 & 3 \end{array}\right| + \frac{1}{2}\left|\begin{array}{cc} -3 & 3 \ -5 & 1 \end{array}\right| + \frac{1}{2}\left|\begin{array}{cc} -5 & 1 \ -3 & -3 \end{array}\right|\
&=\frac{1}{2}\cdot 9 + \frac{1}{2}\cdot (-6) + \frac{1}{2}\cdot (-8)\
&=\frac{5}{2}\
\end{align*}
Therefore, the area of the pentagon is $\frac{5}{2}$ square units.
Area of triangle whose vertices are (6,1), (9,-1) and (6,-3) is 6 square units and the area of triangle whose vertices are (0,-8), (7,-10) and (0,-10) is 7 square units.
What is Triangle?A polygon having 3 edges and 3 vertices is called a triangle. It is one of the fundamental geometric forms.
Lets find the area of triangle ( Pink Colour) whose vertices are (6,1), (9,-1) and (6,-3), [tex]Area = \frac{1}{2} [x_{1}(y_{2} -y_{3}) + x_{2}(y_{3}-y_{1}) + x_{3}(y_{1}-y_{2} ) ][/tex]
Area = 1/2 [ 6 ( -1 - (-3) ) + 9( -3 -1 ) + 6( 1 - ( -1 ) ) ]
Area = 1/2 [6 * 2 + 9 * (-4) + 6 * 2]
Area = 1/2 [12-36+12] = 1/2 (-12) = -6
Therefore , Area of Triangle is 6 square units.
Now, Lets find the area of triangle ( Brown Colour ) whose vertices are (0,-8), (7,-10) and (0,-10),
[tex]Area = \frac{1}{2} [x_{1}(y_{2} -y_{3}) + x_{2}(y_{3}-y_{1}) + x_{3}(y_{1}-y_{2} ) ][/tex]
Area = 1/2 [ 0( -10 - ( -10 )) + 7 ( -10 - ( -8 ) ) + 0 ( -8 - ( -1- ) ) ]
Area = 1/2 [ 0 + 7 * (-2) + 0]
Area = 1/2 ( -14 ) = -7
Therefore, Area of Triangle is 7 square units.
Now. Lets find the area of Rectangle( Blue Colour ) whose length is 5 unit and Breadth is 3 unit.
So, Area of Rectangle = Length * Breadth
= 5 * 3 square units
= 15 square units.
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Related Questions
Find the measure of the angle A for the triangle shown!
Answers
Answer:
The value of A is 34 degrees angles on the right angle triangle are equal to 180 degrees
Find the missing length indicated
Answers
The value of x is 5
Define the term Similar triangles?Triangles with the same shape but different sizes are said to be similar triangles. To be more specific, two triangles are comparable if their respective sides are proportionate and their corresponding angles are congruent.
Two triangles are similar if corresponding angles are congruent and corresponding sides are proportional.
from the below figure, both the triangles are similar, ∆ABC ≈ ∆EFB
By using Thales's theorem, the ratio of the sides of triangles are;
BE/EA = BF/FC
15/30 = x/10
x = 5
Therefore the value of x is 5
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The ratio of triangle sides can be calculated using Thales' theory, and it is the value of x is 5
Define the term Similar triangles?Similar triangles are those with the same shape but varying sizes. To be more precise, two triangles are comparable if their matching angles and respective sides are congruent.
If matching sides are proportional and corresponding angles are congruent, two triangles are similar.
Both triangles in the following figure are comparable ∆ABC ≈ ∆EFB
The ratio of triangle sides can be calculated using Thales' theory, and it is;
BE/EA = BF/FC
15/30 = x/10
x = 5
Therefore the value of x is 5
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-0.1x^2+10=0
find the x
Answers
Answer:
x = ±10
Step-by-step explanation:
1) Subtract 10 from both sides.
[tex]-0.1 \times x^2=-10[/tex]
2) Divide both sides by -0.1.
[tex]x^2=\frac{-10}{-0.1}[/tex]
3) Simplify [tex]\frac{-10}{-0.1}[/tex] to 100.
[tex]x^2=100[/tex]
4) Take the square root of both sides.
[tex]x=\pm \sqrt{100}[/tex]
5) Since 10 * 10 is 100, the square root of 100 is 10.
[tex]x=\pm10[/tex]
100 POINTS + BRAINLIEST!!
Answers
Step-by-step explanation:
Mean is the average of all of the scores (26 of them)
Mean = (3x6 + 4x3 +5x1 + 6x2 + 7x0 + 8x5 +9x5 + 10x4) / 26 = 6.6
Median is the score in the middle of all of the scores arranged in ascending order ( or the average of the middle two if there is an even number (26) of scores )
333333 444 5 66 88 888 99999 10 10 10 10 Median = 8
Mode is the score with the highest frequency = 3 (there are 6 of them)
ii) 3/4 of the students would be 3/4 x 26 = 19.5 students ~ 20 students
this would mean the average the teacher is talking about is '3' (the 'mode') since 20 students scored above '3' ( 3+1+2 +0+5+5+4 = 20)
Answer:
ion kno but good luck
Step-by-step explanation:
five players are each dealt 2 cards without replacement. (a) what is the expected value of the sum of all 10 cards?
Answers
The expected value of a total of all 10 cards is 65.38 when the five players are dealt with 2 cards each without replacement.
The expected value of the sum of all 10 cards dealt without replacement can be calculated by multiplying the expected value of a single card by 10.
The expected value of a single card can be calculated by adding up all possible outcomes (Ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, J, Q, K) and dividing by the total number of cards in a deck (52).
= 52/13
This gives us an expected value of 6.5381.
Therefore, the expected value of the sum of all 10 cards is 65.38
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Complete question is:
Five players are each dealt 2 cards without replacement.
What is the expected value of the sum of all 10 cards?
✪ Explain why Jack should keep the policies you placed in the "Policies to Keep" column.
Answers
The policies listed in the "Policies to Keep" column are beneficial to Jack as they help to reduce the risk of fraud, financial loss, and mismanagement of resources. They also serve to ensure that the business is operating in a compliant and legal manner. Additionally, these policies can help to ensure that the organization is operating efficiently and in an ethical manner.
fine the exact value of sin(45-30)
Answers
Estimated answer: 0.650
K
Factor the four-term polynomial by grouping.
x³ +9x² + 3x + 27
Answers
The factorization of the polynomial x³ + 9x² + 3x + 27 by grouping is:
x³ + 9x² + 3x + 27 = (x + 9)(x² + 3)
What is grouping?In algebra, "grouping" refers to a method of factoring polynomials that involves grouping together pairs of terms within the polynomial, in order to factor out a common factor.
What is polynomial?In mathematics, a polynomial is a mathematical expression consisting of variables (also called indeterminates) and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables.
In the given question,
To factor the four-term polynomial by grouping, we can follow these steps:
Step 1: Group the first two terms and the last two terms together.
x³ + 9x² + 3x + 27
= (x³ + 9x²) + (3x + 27)
Step 2: Factor out the common factor from each group.
= x²(x + 9) + 3(x + 9)
Step 3: Notice that the expression (x + 9) is a common factor of both terms, and factor it out.
= (x + 9)(x² + 3)
Therefore, the factorization of the polynomial x³ + 9x² + 3x + 27 by grouping is:
x³ + 9x² + 3x + 27 = (x + 9)(x² + 3).
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Eric and Erica collect phone cards, and their phone
cards are in a ratio of 3:4. If Erica has 14 more phone
cards than Eric, how many cards does Eric have?
Answers
Answer:
18.67
Step-by-step explanation:
my calculate ratio results
What is the height of the building shown below? Round to the nearest tenth if necessary.
62.9 feet
132 feet
123.5 feet
77.7 feet
Answers
Answer:
77.7
Step-by-step explanation:
if you know, you know. laso make sure your calculator is on degrees and not radians
What is the meaning of "field"?
Answers
This group is isomorphic to the group of invertible matrices GL(n) if the vector space has finite dimension n.
What is matrices?Matrices are rectangular arrays of numbers or other mathematical objects, such as complex numbers, polynomials, or functions. Matrices are an important tool in many branches of mathematics, including linear algebra, calculus, and statistics. A matrix is usually written with square brackets enclosing its elements, with rows and columns separated by commas or spaces.
by the question.
Yes, you are correct! The set of all n x n matrices with entries in a field (such as the real numbers) is a group under addition, known as the general linear group GL(n), where the operation is matrix addition. This group satisfies the four group axioms:
Closure: The sum of two matrices is also a matrix.
Associativity: Matrix addition is associative.
Identity: The zero matrix is the identity element of GL(n).
Inverse: For every matrix A in GL(n), there exists a matrix -A such that A + (-A) = 0.
However, the set of all n x n matrices with entries in a field is not a group under multiplication because matrix multiplication is not always commutative and not every matrix has an inverse with respect to matrix multiplication.
On the other hand, the set of invertible n x n matrices, denoted by GL(n) or GL (n, F) when the field is specified, does form a group under matrix multiplication. The group axioms are satisfied:
Closure: The product of two invertible matrices is invertible.
Associativity: Matrix multiplication is associative.
Identity: The identity matrix I_n is the identity element of GL(n).
Inverse: For every invertible matrix A in GL(n), there exists an inverse matrix A^-1 such that A * A^-1 = I_n.
Similarly, the set of invertible linear transformations of a vector space into itself forms a group under composition of functions, known as the general linear group GL(V) of the vector space V.
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find the coordinates of p so that p partitions segment ab in the part-to-whole ratio of 1 to 5 with a(-9, 3) and b(1, 8)
Answers
The coordinates of p so that p partitions segment ab in the part-to-whole ratio of 1 to 5 with a(-9, 3) and b(1, 8) is (-44/6, 23/6).
To find the coordinates of point P, we can use the following formula:
P = ( (5 x Ax + 1 x Bx) / 6 , (5 x Ay + 1 x By) / 6 )
Here, Ax and Ay are the x and y coordinates of point A, and Bx and By are the x and y coordinates of point B. By plugging in the values we have, we get:
P = ( (5 x (-9) + 1 x 1) / 6 , (5 x 3 + 1 x 8) / 6 )
P = ( (-45 + 1) / 6 , (15 + 8) / 6 )
P = ( -44/6 , 23/6 )
So the coordinates of point P are (-44/6, 23/6).
To check if we got the right answer, we can measure the distance between A and P and the distance between P and B, and make sure that the ratio is indeed 1 to 5. We can use the distance formula for this:
Distance between A and P:
√( (-9 - (-44/6))² + (3 - 23/6)² )
= √( (35/6)² + (5/6)² )
= √( 1225/36 + 25/36 )
= √( 1250/36 )
= 5/6 x √(50)
Distance between P and B:
√( (1 - (-44/6))² + (8 - 23/6)² )
= √( (55/6)² + (41/6)² )
= √( 3025/36 + 1681/36 )
= √( 4706/36 )
= 5/6 x √(94)
The ratio of the distance between A and P to the distance between P and B is:
(5/6 x √(50)) / (5/6 x √(94)) = √(50/94)
Simplifying this gives us:
√(50/94) = √(25/47)
The ratio of the distances is indeed 1 to 5, which confirms that our answer for the coordinates of P is correct.
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Write the slope-intercept form of the equation of the line.
Answers
Answer:
y = x + 2
Step-by-step explanation:
The slope intercept form is y = mx + b
m = the slope
b = y-intercept
Slope = rise/run or (y2 - y1) / (x2 - x1)
Pick 2 points (0,2) (-2, 0)
We see the y decrease by 2, and the x decrease by 2, so the slope is
m = -2 / -2 = 1
Y-intercept is located at (0,2)
So, the equation is y = x + 2
Determine the slope from the table given below.
Answers
Answer:
m = 6
Step-by-step explanation:
Slope = rise/run or (y2 - y1) / (x2 - x1)
Pick 2 points on the table (4,6) (5,12)
We see the y increase by 6 and the x increase by 1, so the slope is
m = 6
So, the slope is 6
In December last year, Kelantan experienced a major flood. This flood is continuously distributed. It is found that 50% of the rainy days are non-stop rain. If there is non-stop rain, 80% will flood; otherwise 30% flooding will occur. If a flood occurs, what is the percentage that it rains non-stop in December of that year? [5 marks]
Answers
If a flood occurs, there is a 72.7% probability that it rains non-stop in December of that year
What is probability ?
Probability is a measure of the likelihood of an event occurring. It is a number between 0 and 1, with 0 indicating that the event is impossible and 1 indicating that the event is certain to occur. Probabilities between 0 and 1 indicate the likelihood of an event occurring, with smaller values indicating lower likelihoods and larger values indicating higher likelihoods.
Probabilities can be determined using mathematical formulas, statistical analysis, and empirical data. They are used in a wide range of fields, including mathematics, science, economics, and social sciences, to make predictions and inform decision-making.
According to the question:
Let's use the following notation:
NR: Non-stop rain
F: Flood
We want to find the conditional probability of NR given that F occurred, or P(NR|F). We can use Bayes' theorem to find this probability:
P(NR|F) = P(F|NR) * P(NR) / P(F)
We know that 50% of the rainy days are non-stop rain, so P(NR) = 0.5. We also know that if there is non-stop rain, 80% will flood, so:
P(F|NR) = 0.8
If there is no non-stop rain, 30% flooding will occur, so:
P(F|~NR) = 0.3
We can use the law of total probability to find P(F), which is the probability of flooding occurring:
P(F) = P(F|NR) * P(NR) + P(F|~NR) * P(~NR)
P(~NR) = 1 - P(NR) = 0.5
P(F) = 0.8 * 0.5 + 0.3 * 0.5 = 0.55
Now we can plug in all the values to find P(NR|F):
P(NR|F) = P(F|NR) * P(NR) / P(F)
P(NR|F) = 0.8 * 0.5 / 0.55 = 0.727 or 72.7% (rounded to one decimal place)
Therefore, if a flood occurs, there is a 72.7% chance that it rains non-stop in December of that year.
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Question This figure is made up of two rectangular prisms. What is the volume of the figure? Enter your answer in the box. giveing brainelslist pls answer
Answers
The volume of figure made up of two rectangular prisms is found to be 1092 sq. in.
Explain about the volume of rectangular prisms?The amount of three-dimensional space that an object takes up is its volume. Cubic units are used to measure volume.For instance, the rectangular prism below, which is composed of 18 unit cubes, has a volume of 18 cubic units.volume of rectangular prisms = length * width * height
So,
Volume of A and C are same as their dimensions are same.
Volume of A and C = 2*(7*2*3)
Volume of A and C = 84 sq. in
Now, volume of B = 12*12*7
volume of B = 1008 sq. in.
Complete volume = Volume of A and C + volume of B
Complete volume = 84 sq. in + 1008 sq. in.
Complete volume = 1092 sq. in.
Thus, the volume of figure made up of two rectangular prisms is found to be 1092 sq. in.
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Simplify (number on picture) to an expression involving a single trig function with no fractions. If needed, enter squared trigonometric expressions using the following notation
Answers
Step-by-step explanation:
[tex] \frac{1 - \ { \sin(t) }^{2} } { { \sin(t) }^{2} } = \frac{1} { { \sin(t) }^{2} } - \frac{{ \sin(t) }^{2}}{{ \sin(t) }^{2}} \: = \frac{1} { { \sin(t) }^{2} } - 1[/tex]
[tex] = { \sin(t) }^{ - 2} - 1[/tex]
hope this helps
Find x, if √x +2y^2 = 15 and √4x - 4y^2=6
Answers
Answer:
x = 52.2
Step-by-step explanation:
Add 4x - 4y^2 = 36 and x + 2y^2 = 225
x + 2y^2 + 4x - 4y^2 = 225 + 36
5x = 261
x = 261/5=52.2
Determine the relationship between the two triangles and whether or
not they can be proven to be congruent.
The two triangles are related by_____, so the triangles______
Answers
The two triangles are related by SAS criteria, so the triangles are congruent.
What are congruent triangles?Congruent triangles are triangles that are precisely the same size and form. When the three sides and three angles of one triangle match the same dimensions as the three sides and three angles of another triangle, two triangles are said to be congruent. Corresponding portions are those areas of the two triangles that share the same dimensions (are congruent). This indicates that corresponding triangle parts are congruent (CPCTC).
From the given figure we observe for that the two triangles two sides and the corresponding angle of 90 degree is similar.
Thus, using the SAS criteria we see that the two triangles are equal.
Hence, the two triangles are related by SAS criteria, so the triangles are congruent.
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a water park sold 1679 tickets for total of 44,620 on a wa summer day..each adult tocket is $35 and each child ticket is $20. how many of each type of tixkwt were sold?
Answers
Answer: 811 adult tickets and 868 child tickets
Step-by-step explanation:
35x +20y = 44,620
add 35+20
divide the sum by 44,620 and
the answer
can someone help please thank you. please
Answers
Answer:
1. Volume: 912 cm³
Surface Area: 672 cm²
2. Volume: 1239 1/3 cm³
Surface Area: 819 cm²
3. Volume: 216 2/3 cm³
Surface Area: 240 cm²
Step-by-step explanation:
Formula for Volume of a Pyramid: [tex]\frac{1}{3} * lwh[/tex]
(where l, w, and h are the length, width, and height, respectively)
Formula for Surface Area of a Square Pyramid: [tex]B + \frac{1}{2} ps[/tex]
(where B is the area of the base, p is the perimeter of the base, and s is the slant height)
1 (Volume) - V = (1/3)(12)(12)(19)
= (4)(12)(19)
= 912 cm³
1 (Surface Area) - SA = (12)(12) + (1/2)(4)(12)(22)
= 144 + 528
= 672 cm²
2 (Volume) - V = (1/3)(13)(13)(22)
= 1239 1/3 cm³
2 (Surface Area) - SA = (13)(13) + (1/2)(4)(13)(25)
= 169 + 650
= 819 cm²
3 (Volume) - V = (1/3)(10)(10)(6.5)
= 216 2/3 cm³
3 (Surface Area) - SA = (10)(10) + (1/2)(4)(10)(7)
= 100 + 140
= 240 cm²
Bria is a customer who would like to display her collection of soap carvings on top of her bookcase. The collection needs an area of 300 square inches. What should b equal for the top of the bookcase to have the correct area? Round your answer to the nearest tenth of an inch.
I need help D: Please !!!!
Answers
The width of the top of the bookcase should be approximately 12.2 inches to give Bria's soap carving collection an area of 300 square inches.
How do you compute the area of a square inch?Simply multiply the length and width measurements to get the area of your square or rectangular area in square inches.
Assume the bookcase's top is rectangular, with length "L" and width "b". Because the area of a rectangle is the product of its length and width, we get:
L * b = 300
To find "b," we can rearrange the equation as follows:
b = 300 / L
We don't have enough information to directly solve for "L," but we can make an educated guess based on the figure provided. Based on the illustration, the bookcase appears to be roughly twice as long as it is wide. So let us suppose:
L ≈ 2b
When we plug this into the equation above, we get:
b = 300 / (2b) (2b)
To simplify, we have:
b^2 = 150
When we take the square root of both sides, we get:
b ≈ 12.2
We have, rounded to the nearest tenth of an inch:
b ≈ 12.2 inches
As a result, the width of the top of the bookcase should be approximately 12.2 inches in order to give Bria's soap carving collection a 300-square-inch area.
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A bicycle wheel travels 30π inches for each revolution. What is the diameter of the wheel?
Answers
Answer:30 inches
Step-by-step explanation:
how do you find the simplest radical form for this please help me i got a (f) and i really need help that’s why i’m up this late trying to do all of my missing assignments.
Answers
Answer:
[tex]14 {y}^{2} \sqrt{ {x}^{3} {z}^{9} }[/tex]
Step-by-step explanation:
[tex] \sqrt{196 {x}^{3} {y}^{4}{z}^{9} }= \sqrt{196} \times \sqrt{ {x}^{3} } \times \sqrt{ {y}^{4} } \times \sqrt{ {z}^{9} } \\ \sqrt{196} = 14 \\ \sqrt{ {x}^{3} } = {x}^{ \frac{3}{2} } \\ \sqrt{ {y}^{4} } = {y}^{2} \\ \sqrt{ {z}^{9}} = {z}^{ \frac{9}{2} }[/tex]
A fractional exponent is not necessarily simpler so just take out the 1st and 3rd parts of the term which simplify nicely:
[tex] \sqrt{196 {x}^{3} {y}^{4}{z}^{9} } = 14 {y}^{2} \sqrt{ {x}^{3} {z}^{9} } [/tex]
Construct a 99% confidence interval of the population proportion using the given information.
x = 75, n = 250
Answers
The 99% confidence interval for the population proportion p is :lower bound= 0.225, upper bound 0.375
What does a confidence interval actually mean?
Your estimate's mean is added to and subtracted from by the estimate's range to create a confidence interval. If you repeat your test, within a specific level of confidence, this is the range of values you anticipate your estimate to fall within.
Given that,
n = 250
x = 75
Point estimate = sample proportion = p = x / n = 75/250=0.3
1 - p =1 - 0.3=0.7
At 99% confidence level the z is ,
α = 1 - 99% = 1 - 0.99 = 0.0
α / 2 = 0.01 / 2 = 0.005
Z /2 = Z0.005 = 2.576 ( Using z table )
Margin of error = E = Zα / 2 * √(( p * (1 - p)) / n)
= 2.576 (√((0.3*0.7) /250 )
E = 0.075
A 99% confidence interval for population proportion p is ,
p - E < p < p + E
0.3 -0.075 < p < 0.3 + 0.075
0.225< p < 0.375
The 99% confidence interval for the population proportion p is :lower bound= 0.225, upper bound 0.375.
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Please help! Use the properties of exponents to simplify the expression.
Answers
Answer:
[tex] {y}^{6} {x}^{ - 2} [/tex]
Step-by-step explanation:
4 will get multiplied to the exponents of x and y inside the bracket.
Find the prime factorization of 792. What is the sum of the distinct prime factors?
Answers
The sum of the distinct prime factors is 16.
Solution:There are overall 24 factors of 792 among which 792 is the most significant factor and its prime factors are 2, 3, and 11.
Hence sum = 2 + 3 + 11 = 16
right triangle that i’m confused on please help
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Answer:
Proofs attached to answer
Step-by-step explanation:
Proofs attached to answer
If A = [ 1 2 4 0 5 6 ] and B= [ 7 3 2 5 1 9] find C= A+B and D=A-B
Answers
Step 1: Arrange the arrays so that A and B are in the same order: A = [ 1 2 4 0 5 6 ], B = [ 7 3 2 5 1 9]
Step 2: To find C = A+B, add each element of A and B together.
C = [1+7, 2+3, 4+2, 0+5, 5+1, 6+9]
C = [8, 5, 6, 5, 6, 15]
Step 3: To find D = A-B, subtract each element of B from A.
D = [1-7, 2-3, 4-2, 0-5, 5-1, 6-9]
D = [-6, -1, 2, -5, 4, -3]
PLEASE I NEED HELP, what is the equivalent of 7/tan b+7tan b
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In response to the stated question, we may state that The equivalent trigonometry expression of 7/tan b + 7tan b is (7 - 7tan b cot b)/sin b.
what is trigonometry?The study of the connection between triangle side lengths and angles is known as trigonometry. The concept first originated in the Hellenistic era, during the third century BC, due to the application of geometry in astronomical investigations. The subject of mathematics known as exact techniques deals with certain trigonometric functions and their possible applications in calculations. There are six commonly used trigonometric functions in trigonometry. Sine, cosine, tangent, cotangent, secant, and cosecant are their separate names and acronyms (csc). The study of triangle characteristics, particularly those of right triangles, is known as trigonometry. As a result, geometry is the study of the properties of all geometric forms.
tan(A + B) = (tan A + tan B)/(1 - tan A tan B)
Set A = 90 degrees and B = b degrees:
tan(90 + b) = (tan 90 + tan b)/(1 - tan 90 tan b)
tan(90 + b) = (undefined + tan b)/(1 - undefined tan b)
tan(90 + b) = -cot b
7/tan b + 7tan b
= 7/(tan b) + 7(tan(90 + b) - 1)
= 7/(tan b) + 7(-cot b - 1)
= (7 - 7tan b cot b)/sin b
The equivalent expression of 7/tan b + 7tan b is (7 - 7tan b cot b)/sin b.
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