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2 years ago

A circle has a radius of 5 centimeters. What is the area?

Mathematics

1 answer:

schepotkina [342]2 years ago

6 0

Answer:

$25\pi$

Step-by-step explanation:

The formula for the area of a circle is $A=\pi r^{2}$ , r is your radius, A is your area, and π is pi (3.1415...). You plug in your radius, or 5 into r, square it, 25, and multiply it by pi. You may be asked to use a certain number of digits of pi, and in that case you multiply for example 3.14 by 25, however $25\pi$ is the exact answer.

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Two mechanics worked on a car. the first mechanic worked for 10 hours, and the second mechanic worked for 15 hours. together the

Yuliya22 [10]

Let x and y be the rate per hour for Mechanic 1 and 2 respectively.

Then,
x+y=205 ---------- (1)
Additionally,
10x+15y = 2500 ------ (2)

Solving equations 1 and 2;
Multiply (1) by 10 and subtract two from the result,
10x+10y = 2050
10x +15 y =2500
----------------------
-5 y = --450 => y = 450/5 = $90
Then,
x= 205-90 = $115

Therefore,
Mechanic 1 charged $115 per hour
Mechanic 2 charged $90 per hour

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3 years ago

What is the mean absolute deviation for the set of data below? 2, 8, 10, 16

Evgesh-ka [11]

Solution: We are given below data:

$2, 8, 10, 16$

Now to find the mean deviation, we use the below formula:

$MD= \frac{\sum|X-\bar{X}|}{N}$

Where:

$\sum,$ represents the summation

X, represents the observation.

$\bar{X},$ represents the mean

N represents the number of observation.

$\bar{X}= \frac{\sum{X}}{N}= \frac{2+8+10+16}{4}=9$

$\sum |X-\bar{X}| = |2-9| + |8-9| +|10-9| +|16-9|=7+1+1+7=16$

Therefore, the mean deviation is:

$MD= \frac{16}{4}$

= 4

5 0

4 years ago

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Why did many americans seek a change in the election of 1980

Naya [18.7K]

That is because they were unsatisfied with the way Jimmy Carter was running the country. Not only was economy doing fairly poor, but he also lost a lot of support because of the way he solved the hostage crisis. All of these combined to allow Ronald Reagan to easily win the presidency.

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3 years ago

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P/4+=16 Pls show work!!

Dima020 [189]

Answer:

P = 64

Step-by-step explanation:

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3 years ago

What is 692,119 rounded to the nearest thousand

Helen [10]

In order to get the answer to this problem you will have to go to the thousands place value and look at the number next to the place value and if the number is greater then 5 then you round up which will give you your answer.

$692,119$

$2,119$

$1$

$= 2000$

$= 692,000$

Which means your answer is "692,000."

Hope this helps.

4 0

3 years ago