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Vinil7 [7]
3 years ago
8

A circular swimming pool has a radius of 15 ft. There is a path all the way around that pool that is three feet wide. What is th

e circumference of the outer edge of the path around the pool? Use 3.14 for Pi.
Mathematics
1 answer:
daser333 [38]3 years ago
4 0

Answer:

The radius of the circle with the circumfrence we need to find is 15+3=18.

18*2pi=113.04

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4 people can dig a hole in 3 hours. How long does it take 9 people.
ad-work [718]

Answer: 1 hour 20 minutes

<u>Step-by-step explanation:</u>

Let's figure out how long it would take 1 person to dig the hole and then divide that number by 9 (since they are sharing the workload).

\dfrac{1}{4}x=3\qquad \implies \qquad x = 12\quad \text{It takes 12 hours for 1 person}\\\\\\\dfrac{12\ \text{(for 1 person)}}{9\ \text{(people)}}\quad =1\dfrac{1}{3}\quad =\large\boxed{1\ hour\ 20\ minutes}

6 0
3 years ago
Read 2 more answers
Which of the following is equivalent to √-90?<br> A. -3i√10<br> B. 3i√10<br> C. 9i√10<br> D. 9√-10
erastova [34]
The answer to this question is B.  I hope this helps
7 0
3 years ago
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A boat is marked up 20% on the original price. The original price was
pishuonlain [190]

Answer:

Original price was $50 x 0.20 = 10

original price $50 - 10 = $40 the sale price before sales tax

Step-by-step explanation:

hopefully it helps

3 0
2 years ago
Erica earned a total of $15,450 last year from her two jobs. the amount she earned from her job at the store was $1250 more than
dimaraw [331]

If Erica earned a total of $15450 last year from both the jobs then he earns $2840 from college if she earned 1250 more than four times the amount from college from store.

Given Total amount earned=$15450,Amount earned from store is 1250 more than 4 times earned from college.

Amount from store forms an equation.

let the amount earned from college is x.

According to question:

Amount earned from store=4x+1250

Amount earned from college=x

Total amount earned=4x+1250+x

5x+1250=15450

5x=15450-1250

5x=14200

x=14200/5

x=2840

Put the value of x in 4x+1250 to get amount earned from store=4(2840)+1250=$12610.

Hence the amount earned by Erica from college is $2840.

Learn more about equation at brainly.com/question/2972832

#SPJ4

6 0
1 year ago
PLEASE HELP
arsen [322]
I think it is D. not sure tho
5 0
2 years ago
Read 2 more answers
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