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Ipatiy [6.2K]
3 years ago
8

C equals 2 pie r can you solve for r

Mathematics
1 answer:
gizmo_the_mogwai [7]3 years ago
5 0
C=2 \pi r \ \ \to \ \ r= \cfrac{C}{2 \pi }
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A high school athletic department bought 40 soccer uniforms at a cost of $3,000. After soccer season they returned some uniforms
quester [9]

Interesting problem.

First - let's figure cost of each uniform at purchase.

3,000/40 = $75 each

When some uniforms were returned at $40 - there was a difference of $35 in what they paid and what they rec'd in return. ($75 - 35 = $40)

8 0
3 years ago
Enter your answer and show all the steps that you use to solve this problem.
valina [46]

You will save $9


Convert 20% to decimal

Each % is 0.01 so 20×0.01=0.2

Then multiply

45×0.2=9

6 0
3 years ago
Find the solution of each equation using mental math or a table.  If the solution lies between two consecutive integers, identif
gizmo_the_mogwai [7]
J = 20 
it's very easy, aren't you really able to find that by yourself?

7 0
3 years ago
Given the data shown below, which of the following is the best approximation of the coefficient of determination (r^2)
HACTEHA [7]

The coefficient of determination can be found using the following formula:

r^2=\mleft(\frac{n(\sum ^{}_{}xy)-(\sum ^{}_{}x)(\sum ^{}_{}y)}{\sqrt[]{(n\sum ^{}_{}x^2-(\sum ^{}_{}x)^2)(n\sum ^{}_{}y^2-(\sum ^{}_{}y)^2}^{}}\mright)^2

Using a Statistics calculator or an online tool to work with the data we were given, we get

So the best aproximation of r² is 0.861

8 0
1 year ago
Jeremy and Brenda drove their cars in
harkovskaia [24]

Answer: Jeremy drove 84 miles.

Step-by-step explanation:

Let x represent the number of miles that Brenda drove.

If Jeremy drove twice

as far as Brenda, it means that the distance covered by Jeremy would be 2x miles

When they stopped after some time, they were already

126 miles apart. This means that the total distance covered by both of them is 126 miles. Therefore,

x + 2x = 126

3x = 126

x = 126/3

x = 42 miles

The number of miles that Jeremy drove is

42 × 2 = 84 miles

4 0
3 years ago
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