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Ahat [919]
2 years ago
11

1. If the area of a circle is 81pi square feet, find its circumference.

Mathematics
1 answer:
My name is Ann [436]2 years ago
4 0

Answer:

the circumference is 18 pi feet.

Step-by-step explanation:

You might be interested in
What is the upper quartile, Q3, of the following data set? 54, 53, 46, 60, 62, 70, 43, 67, 48, 65, 55, 38, 52, 56, 41
scZoUnD [109]
The original data set is 
{<span>54, 53, 46, 60, 62, 70, 43, 67, 48, 65, 55, 38, 52, 56, 41}

Sort the data values from smallest to largest to get
</span><span>{38, 41, 43, 46, 48, 52, 53, 54, 55, 56, 60, 62, 65, 67, 70} 
</span>
Now find the middle most value. This is the value in the 8th slot. The first 7 values are below the median. The 8th value is the median itself. The next 7 values are above the median. 

The value in the 8th slot is 54, so this is the median

Divide the sorted data set into two lists. I'll call them L and U 
L = {<span>38, 41, 43, 46, 48, 52, 53}
U = {</span><span>55, 56, 60, 62, 65, 67, 70}
they each have 7 items. The list L is the lower half of the sorted data and U is the upper half. The split happens at the original median (54).

Q3 will be equal to the median of the list U
The median of U = </span>{<span>55, 56, 60, 62, 65, 67, 70} is 62 since it's the middle most value. 

Therefore, Q3 = 62

Answer: 62</span>
4 0
3 years ago
The regular price of a child's entry ticket to a water park is $8 less than that for an adult's. The park offers half off all en
inessss [21]

Answer:

76

Step-by-step explanation:

so first the equation for the situation has been given which is

194=1/2x + 2x - 16

now you can just solve since it's a linear equation

194=2.5x -16

take 16 to the other side to get

210=2.5x

solve to get x (adult price)

which is 84

remember the. child's price is 8 less

84-8=76

4 0
3 years ago
Solve for b, then solve for each angle in the triangle
lesya692 [45]

We know that the sum of the interior angles of a triangle equals 180, then,in this case we have the following equation:

b+2b+(b+16)=180

then, solving for b, we get:

\begin{gathered} b+2b+(b+16)=180 \\ \Rightarrow4b+16=180 \\ \Rightarrow4b=180-16=164 \\ \Rightarrow b=\frac{164}{4}=41 \\ b=41 \end{gathered}

now that we have that b = 41, we can find the measure of each angle:

\begin{gathered} b=41 \\ 2b=2(41)=82 \\ b+16=41+16=57 \end{gathered}

7 0
1 year ago
Liling is a salesperson at a computer store she recurves a base salary of $2,300 per month and she receives a commission of 3% o
Harman [31]

Answer:

  • $3948

Step-by-step explanation:

<u>Total earning:</u>

  • Salary + commission + extended warrant fee
  • 2300 + 0.03*44000 + 41*8 =
  • 2300 + 1320 + 328 =
  • 3948
8 0
2 years ago
12. The width of a rectangle is 16.55 inches. The length of the rectangle is half its width.
zepelin [54]
The answer is D

16.55 divide by 2= 8.275
8.275+8.275+16.55+16.55=49.65
4 0
3 years ago
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