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ankoles [38]
2 years ago
15

What is the radius of a sphere with a surface area of 100 pi cm2

Mathematics
2 answers:
deff fn [24]2 years ago
7 0
I think it is around 23
Ksenya-84 [330]2 years ago
6 0
The surface area of a sphere is 4r^2pi, so dividing 100 by 4pi gives a result of 25/pi.  Taking the square root and rationalizing the denominator, we have 5sqrt(pi)/pi as the radius of the sphere.
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Your parents allow you to borrow a car to get to your part-time job, but you have to pay for a tank of gas each month. Gasoline
alex41 [277]
The answer to this question is the letter "A" which is $20.70. The solution is shown below:

If the guy will solely use the car, his expenses for the gasoline per month is:
Guy alone = $ 2.76/gallon * 15 gallons = $ 41.4
 
If the guy will let his two officemates ride the car and contribute each quarter of the of a tank:
First officemate = 15/4 * $2.76 = $ 10.35
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The guy total savings is shown below:
Total savings = $41.4 - $10.35 -$10.35
Total savings = $20.70

The answer is the letter "A".
5 0
3 years ago
What fraction is equal to -8/24
Lisa [10]

\frac{ - 8}{24}  =  \frac{ - 4}{12}  =  \frac{1}{ - 3}  =   - \frac{1}{3 }  \\

3 0
2 years ago
Read 2 more answers
3a=a+36 find the value of a
e-lub [12.9K]

Answer:

a=18

Step-by-step explanation:

3 0
2 years ago
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I need help completing this problem ASAP
Evgen [1.6K]

Answer:

8 sqrt(5)

Step-by-step explanation:

sqrt(45) + sqrt(125)

Rewriting

sqrt(9*5) + sqrt( 25 *5)

we know sqrt(ab) = sqrt(a) sqrt(b)

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3 sqrt(5)+5 sqrt(5)

Add like terms

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5 0
3 years ago
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Records at an insurance company showed that the first 30 customers made an average of 5 claims each through their lifetime. Afte
umka2103 [35]

The average of the 75 customers will be 6.4.

<h3>How to calculate the value?</h3>

The first 30 customers made an average of 5 claims each. The total claims will be:

= (5 × 30) = 150

When 75 more people were assessed, the average was 6. Therefore, the total claims will be:

= (75 + 30) × 6

= 105 × 6

= 630

Therefore, the average of the 75 customers will be:

= (630 - 150)/75

= 480/75

= 6.4

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brainly.com/question/1136789

#SPJ1

8 0
1 year ago
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