Answer:
\(\text{ One of the exterior angles is 204}\degree\)Step-by-step explanation:
The interior angles of any polygon are represented by the following equation:
\((n-2)\cdot180=\sum \text{interior}\)If the sum of the interior angles is 2340, solve for n to determine how many vertices it has:
\(\begin{gathered} (n-2)\cdot180=2340 \\ n-2=\frac{2340}{180} \\ n=13+2 \\ n=15 \end{gathered}\)Now, if the polygon has 15 vertices. Use the equation for the sum of exterior angles, which is represented as:
\(\begin{gathered} (n+2)\cdot180 \\ =(15+2)\cdot180 \\ =17\cdot180 \\ =3060 \end{gathered}\)If it is a regular polygon, each angle measures the same:
\(\begin{gathered} \frac{3060}{15}=204\degree \\ \text{ One of the exterior angles is 204}\degree \end{gathered}\)Find the difference of 16.2- 3.8
The difference in the mathematical expression, 16.2 - 3.8, is 12.4.
What is the difference?Mathematically, the difference is the result of the mathematical operation of subtraction.
We subtract the smaller value from the larger number to find the difference between the two numerical values.
The difference is also the result of adding one positive value with a negative value.
Given 16.2 - 3.8,
The difference = 12.4 (16.2 - 3.8)
Thus, the difference between 16.2 - 3.8 is 12.4.
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100 Points! Geometry question. Photo attached. Please show as much work as possible. Thank you!
The length KL is 8 units
The value of x is undefined
The length KL is 12 units
Calculating the length KLFrom the question, we have the following parameters that can be used in our computation:
The rhombus
Also, we have
DK = 8
A rhombus is a quadrilateral with all sides equal.
So, we have
KL = 8
Calculating the value of xHere, we have
SKAL = 2x - 8
There is no point S on the rhombus
This means that
x = undefined
Calculating the length KLHere, we have
DM = 5y + 2 and DK = 3y + 6
A rhombus is a quadrilateral with all sides equal.
So, we have
5y + 2 = 3y + 6
Evaluate
2y = 4
Divide
y = 2
So, we have
KL = 5 * 2 + 2
KL = 12
Hence, the length KL is 12 units
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Graph the data in the table
Integral of 1/(x+cosx)
The integral is ln|x + cos(x)| + C, where C represents the constant of integration.
To find the integral of the function 1/(x + cos(x)), we can employ a combination of algebraic manipulation and the use of standard integration techniques. Here's the solution:
First, let's rewrite the integral in a slightly different form to simplify the process:
∫(1/(x + cos(x))) dx
We notice that the denominator, x + cos(x), is not amenable to direct integration. To overcome this, we employ a substitution. Let's set u = x + cos(x). Now, differentiate u with respect to x: du/dx = 1 - sin(x).
Rearranging this equation, we get dx = du/(1 - sin(x)).
Substituting these values, the integral becomes:
∫(1/(u(1 - sin(x)))) du
Next, we simplify further by factoring out 1/(1 - sin(x)) from the integral:
∫(1/(u(1 - sin(x)))) du = ∫(1/u) du = ln|u| + C
Replacing u with its original expression, we have:
ln|x + cos(x)| + C
Therefore, the answer to the integral is ln|x + cos(x)| + C, where C represents the constant of integration.
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What is the value of the expression below when y8 and z =8?10y - 32
Answer
56
Explanation
We are asked to solve the expression given as
10y - 3z
Given that y = 8 and z = 8
To solve this, we will just insert the given values for the variables in the expression.
10y - 3z
= 10 (8) - 3 (8)
= 80 - 24
= 56
Hope this Helps!!!
Solve the problem.
Center City East Parking Garage has a capacity of 253 cars more than Center City West Parking Garage. If the
combined capacity for the two garages is 1215 cars, find the capacity for each garage.
pls help!!
Q:In a random sample, 8 students were asked how long it takes them to get ready for school in the morning. The times are listed below, compute the following:
22 29 21 24 27 28 25 36
Range:
Variance:
Std Deviation:
The required statistical parameters has been computed as follows:
Range = 15.
Standard deviation, SD = 4.4441.
Variance = 19.75.
How to calculate the range?Mathematically, the range of a data set can be calculated by using this formula;
Range = Highest number - Lowest number
Range = 36 - 21
Range = 15.
How to calculate the mean?Mathematically, the mean for these data sets would be calculated by using this formula:
Mean = [F(x)]/n
F(x) = 22 + 29 + 21 + 24 + 27 + 28 + 25 + 36
F(x) = 212.
Mean = 212/8
Mean = 26.5
Next, we would calculate the standard deviation by using this formula:
SD = √(1/n × ∑(xi - u₁)²)
SD = √(1/5 × ∑(22 - 26.5)² + 1/5 × ∑(29 - 26.5)² + 1/5 × ∑(21 - 26.5)² + 1/5 × ∑(24 - 26.5)² + 1/5 × ∑(27 - 26.5)² + 1/5 × ∑(28 - 26.5)² + 1/5 × ∑(25 - 26.5)² + + 1/5 × ∑(36 - 26.5)²)
Standard deviation, SD = 4.4441.
In Statistics, the standard deviation of a data sample is the square root of the variance and this is given by this mathematical expression:
Variance = δ²
Variance = 4.4441²
Variance = 19.75.
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Q.1
According to the Department of Food and Nutrition, the recommended daily allowance (RDA) of calcium for adults is 800 mg. A nutritionist thinks that people with income below poverty level average less than RDA of 800 mg. intakes of calcium were determined for a sample of 40 people with income below poverty level. The results are obtained in the following frequency distribution. Compute the quartiles.
Intake (mg) Frequency
101-200 1
201-300 1
301-400 9
401-500 13
501-600 10
601-700 6
The quartiles of the distribution are given as follows:
First quartile: 350.5 mg.Second quartile: 450.5 mg.Third quartile: 550.5 mg.How to obtain the quartiles of the distribution?The sample size of the distribution is of:
n = 40.
The first quartile is the value that is greater than 25% of the distribution, hence it is the value at the position which is 25% of the sample size, hence:
Position: 0.25 x 40 = 10.Value: 350.5 mg -> mid-point of the bounds of 301 and 400.The second quartile is the value that is greater than 50% of the distribution, hence it is the value at the position which is 50% of the sample size, hence:
Position: 0.50 x 40 = 20.Value: 450.5 mg.The third quartile is the value that is greater than 75% of the distribution, hence it is the value at the position which is 75% of the sample size, hence:
Position: 0.75 x 40 = 30.Value: 550.5 mg.More can be learned about the quartiles of a distribution at https://brainly.com/question/9265525
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Ifyou flipa coin 3 times, are the events independent or dependent? Explain.
EXPLANATION:
The events are totally independent of the number of times the coin is flipped, so the probability that the coin will land heads or tails is 1 to 3 for each event.
help plssssssssssssssss
Answer:
the answer is c
Step-by-step explanation:
A square chess board has sides that are 15 inches long. What is the board's perimeter?
Answer:
60 inches is the perimeter.
Step-by-step explanation:
The perimeter is all of the sides added up. because it is a square, it has 4 15 inch sides.
15+15+15+15
30+30
60
pls mark brainiest
Find the equation of the line that has a slope of 2 and passes through the point (-8,-1). Write the equation in point-slope form.
The equation of the line in point-slope form is y + 1 = 2(x + 8).
What is equation of line?
An equation with terms that have variables x and y independently and a degree of one is referred to be a line equation in a two-dimensional coordinate system. A linear equation is any equation with degree 1. The relationship between the x and y coordinates of any point on a straight line is known as the equation of a straight line.
The point-slope form of the equation of a line with slope m and passing through the point (x1, y1) is given by:
y - y1 = m(x - x1)
Using the given information, we have:
m = 2
x1 = -8
y1 = -1
Substituting these values into the point-slope form, we get:
y - (-1) = 2(x - (-8))
Simplifying, we get:
y + 1 = 2(x + 8)
This is the equation of the line in point-slope form.
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What is the value of m?
In this case, we have two similar triangles (the angles are congruents).
So, the next relations holds:
\(\frac{m}{18}=\frac{4}{6}\)So, we only need to solve for m:
\(m=\frac{18\cdot4}{6}=12\)√3r +5> 1
Please help solve
The solution to the inequality √3r + 5 > 1 is r > 16/3.
To solve the inequality √3r + 5 > 1, we can follow these steps:
Subtract 5 from both sides of the inequality:
√3r + 5 - 5 > 1 - 5
√3r > -4
Square both sides of the inequality to eliminate the square root:
(√3r)^2 > (-4)^2
3r > 16
Divide both sides of the inequality by 3 to solve for r:
(3r)/3 > 16/3
r > 16/3
Therefore, the solution to the inequality √3r + 5 > 1 is r > 16/3.
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Let f(x) = 2x2 + x − 3 and g(x) = x + 2.
Find (f • g)(x)
Answer:
\((f\cdot g)(x) = 2x^3 + 5x^2-x-6\)
Step-by-step explanation:
We are given the two functions:
\(f(x)=2x^2+x-3\text{ and } g(x)=x+2\)
And we want to find:
\((f \cdot g)(x)\)
Recall that this is equivalent to:
\(=f(x)\cdot g(x)\)
Substitute. Hence:
\((f\cdot g)(x)= (2x^2+x-3)(x+2)\)
Expand if desired:
\(\displaystyle = x(2x^2+x-3)+2(2x^2+x-3) \\ \\ = (2x^3+x^2-3x)+(4x^2+2x-6) \\ \\\ = 2x^3 + 5x^2-x-6\)
Answer:
2x^3+5x^2-x-6
Step-by-step explanation:
f(x) = 2x^2 + x − 3 and g(x) = x + 2.
(f • g)(x) = (2x^2 + x − 3 ) * (x + 2)
Distribute
= (2x^2 + x − 3 )*x + (2x^2 + x − 3 )*2
= 2x^3 +x^2 -3x + 4x^2 +2x -6
Combine like terms
=2x^3+5x^2-x-6
Geomtry help, Need answer as soon as possible please! (image of problem attached)
Answer:
A
Step-by-step explanation:
hope this helps
brainiest plzzwhat is −2(x+6)=4x
x=
Answer:
x=-2
Step-by-step explanation:
Distribute, add 12 to both side, then simplify
Answer: -2
Let's solve your equation step-by-step.
−2(x+6)=4x:
Step 1: Simplify both sides of the equation.
−2(x + 6) = 4x
(−2)(x) + (−2)(6) = 4x (Distribute)
−2x + (−12) = 4x
−2x − 12 = 4x
Step 2: Subtract 4x from both sides.
−2x − 12 − 4x = 4x − 4x
−6x − 12 = 0
Step 3: Add 12 to both sides.
−6x − 12 + 12 = 0 + 12
−6x = 12
Step 4: Divide both sides by -6.
−6x/−6 = 12/−6
x = −2
Explain your answer to the question in the picture with steps please, thank you.
Part (a)
Answer: Constant of proportionality = 5/8
Reason:
The general template equation is y = kx where k is the constant of proportionality. It is the slope of the line.
The direct proportion line must pass through the origin. In other words, the y intercept must be zero.
=====================================
Part (b)
Answer: Not Proportional
Reason:
The y intercept isn't zero.
Plug x = 0 into the equation to find y = 1 is the y intercept. This graph does not pass through the origin.
Help please i would give you brainlist
The matrix operation is solved and the rows are interchanged
Given data ,
Let the matrix be represented as A
Now , the value of A is
\(A = \left[\begin{array}{ccc}-6&1&-8\\-7&5&2\\2&9&7\\2&-8&8\end{array}\right]\)
Now , the matrix operation is given by
R₂ ↔ R₃
So , the 2nd row of the matrix is interchanged with 3rd row
On simplifying , we get
\(B = \left[\begin{array}{ccc}-6&1&-8\\2&9&7\\-7&5&2\\2&-8&8\end{array}\right]\)
Hence , the matrix is \(B = \left[\begin{array}{ccc}-6&1&-8\\2&9&7\\-7&5&2\\2&-8&8\end{array}\right]\)
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Write the quotient of the two powers as a single power.
We have that in a quotient of two powers with the same base the exponent of the result is the substraction between exponents.
In this case, we have that:
\(\frac{4^3}{4^2}\)Since the base is 4, we can substract the exponents:
\(\frac{4^3}{4^2}=4^{3-2}=4^1=4\)Answer = 4
A hamburger costs $1. A chicken burger costs 60¢ more than
the hamburger. Find the total cost of both items.
Answer: $2.60
Step-by-step explanation:
$1+$1.60=$2.60
Help me!!!!!!!!!!!!!!!
Answer:
Start with have a good day
Step-by-step explanation:
I WILL GIVE BRAINLY TO WHOEVER HELPS!!
Select all the equations that represent the bar diagram.
Answer:
A and C
Step-by-step explanation:
You are taking samples from a normally distributed population with mean 138 and standard deviation 14. Your batch size is 16. Let X-bar be the average of all 16 of your samples. What is the variance of X-bar?
The variance of X-bar is 12.25.
To find the variance of the sample mean (X-bar) for a normally distributed population, we can use the formula:
Variance of X-bar = (Population Variance) / (Sample Size)
In this case, the population mean (μ) is 138 and the standard deviation (σ) is 14. The population variance (σ^2) can be calculated as the square of the standard deviation, which gives us 14^2 = 196.
Since we are sampling with a batch size of 16, the sample size is also 16.
Now we can substitute these values into the formula:
Variance of X-bar = 196 / 16 = 12.25
Therefore, the variance of X-bar is 12.25.
It's important to note that the sample mean (X-bar) is an unbiased estimator of the population mean (μ). The smaller the sample size, the greater the variability of X-bar around the population mean.
As the sample size increases, the variance of X-bar decreases, indicating a more precise estimate of the population mean.
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Margo’s dog, named Todd, weighed 120 pounds last year. She now weighs 180 pounds. What is the percent of change
Answer:
50%
Step-by-step explanation:
the increase is 60 so divide that by the original number; 60/120=0.5
now we have to change the decimal to a percent. multiply by 100 to do that and we get 50%.
Answer:
Step-by-step explanation:
\(\Delta \%=100\left(\frac{final-initial}{initial}\right)\\ \\ \Delta \%=100\left(\frac{180-120}{120}\right)\\ \\ \Delta \%=100\left(\frac{60}{120}\right)=50\% \)
28) The number of hours per week that high school students spend on computers is normally distributed, with a mean
of 5 hours and a standard deviation of 2 hours. 70 students are chosen at random. Let y represent the mean number
of hours spent on the computer for this group. Find the probability that y is between 5.1 and 5.7.
The probability that y is between 5.1 and 5.7 is approximately 0.4292.
What is probability?Probability is a way to gauge how likely or unlikely something is to happen. It is a number between 0 and 1, where 0 denotes an improbable event and 1 denotes an inevitable one.
According to question:Since the sample size is large (n = 70), we can use the Central Limit Theorem to approximate the sampling distribution of the sample mean as normal with mean μ = 5 and standard deviation σ/sqrt(n) = 2/sqrt(70) ≈ 0.24.
Now we want to find the probability that y, the sample mean, is between 5.1 and 5.7. We can use the standard normal distribution to do this by standardizing y:
z = (y - μ) / (σ / sqrt(n)) = (y - 5) / 0.24
The probability that y is between 5.1 and 5.7 is equivalent to the probability that z is between:
z1 = (5.1 - 5) / 0.24 ≈ 0.42
and
z2 = (5.7 - 5) / 0.24 ≈ 2.92
Using a standard normal distribution table or calculator, we can find that the probability of z being between z1 and z2 is approximately 0.4292.
Therefore, the probability that y is between 5.1 and 5.7 is approximately 0.4292.
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Find the slope of the line through each pair of points
(10, -14), (11,11)
Hello there! I can help you with joy! :)
If we have 2 points, then we can find the slope using this formula:
m=\(\frac{y2-y1}{x2-x1}\)
y2=11
y1=-14
x2=11
x1=10
\(\frac{11-(-14)}{11-10}\)
\(\frac{11+14}{1}\)
25
Hope this helps you!
#HaveAnAmazingDay
\(GraceRosalia\)
Tyler is simplifying the expression 6 - 2x + 5 + 4x. Here is his work:
6 - 2x + 5 + 4x
(6 - 2)x + (5 + 4)x
4x + 9x
13x
Tyler’s work is incorrect. Explain the error he made.
Answer: 13x
Step-by-step explanation:
He multiply 13 by both side which caused a error
Answer:
You have to combine like terms. The 6 and the 5 go together to make 11. The -2x and the 4x go together to make 2x
The simplified answer should be 2x+11
Step-by-step explanation:
PLEASE HELPPPPPPPPPPPPPPPP
I am answering this during a test, lol.
Answer
C. x > -3
Pls I don't understand
The unit rate of the relationship will be 10/3. The correct option is C.
The given equation is,
y = 10/3x + 8
The general form of an equation of the line is,
y = mx + c
here, the slope will be 10/3
Slope refers to the steepness or incline of a line on a graph. It is a measure of how much the dependent variable changes for a given change in the independent variable.
The slope of a line is represented by the ratio of the change in the y-axis (vertical) to the change in the x-axis (horizontal) between any two points on the line. It can also be interpreted as the rate of change of the dependent variable with respect to the independent variable.
A positive slope indicates an upward trend, while a negative slope indicates a downward trend. The slope of a line is often denoted by the letter m.
The unit relationship will be 10/3.
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