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KengaRu [80]
3 years ago
8

A swimming pool has to be drained for maintenance. The pool is shaped like a cylinder with a diameter of 10m and a depth of 1.4

m. Suppose water is pumped out of the pool at a rate of 18 m3 per hour. If the pool starts completely full, how many hours will it take to empty the pool?
Mathematics
1 answer:
ludmilkaskok [199]3 years ago
4 0

Answer: 10 hours-around that number

Step-by-step explanation:

(3.14)*52*1.4 m3 = 109.9 m3 of water.-area

at the rate of 18m3 per hour

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Find the exact circumference of a circle with diameter equal to 8 ft
lina2011 [118]
The formula for circumference is C= 2(pi)(r)^2. Because diameter is double the radius, and the diameter is 8 ft, the radius is 4 ft. So, plug that into the equation, and you get: C=2(pi)(4)^2. The answer is 32 pi ft. If the question asks for the exact answer, keep the pi as it is, but if it says to round, multiply 32 by pi and round.
6 0
3 years ago
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Amanda bought $500 bond with a 6% coupon that matures in 20 years. What are amanda's total annual earnings for this bond?
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dont listen to this kid its $30.00 on APEX

Step-by-step explanation:

5 0
3 years ago
Find an explicit formula for the arithmetic sequence 170, 85, 0, -85,....
olchik [2.2K]
The arithmetic sequence is x - 85 for each one.

170 - 85 = 85
85 - 85 = 0
0 - 85 = -85
and so on

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hope this helps
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The yearly attendance at a ballpark is shown in the table. Which answer describes the average rate of change from Year 2 to Year
SpyIntel [72]

Answer:

A

Step-by-step explanation:

The average rate of change is the change in attendance over change in time.

Δy / Δx

(333.7 - 298.3) / (5 - 2)

11.8

So the average rate of change is an increase of 11.8 thousand people per year.

8 0
3 years ago
16 POINTS!
posledela

Answer:

The mean is: 85

Step-by-step explanation:

First you need to add everything up :

1 * 2 = 2

2 * 1 = 2

3 * 3 = 9

4 * 5 = 20

5 * 4 = 20

6 * 3 = 18

7 * 2 = 14

(I multiplyed them all first because i was fast than doing 4+4+4+4+4 because its the same as 4 * 5)

then add them all up 2+2+9+20+20+18+14=85

Answer:

The median is: 4

Step-by-step explanation:

Get the data in NUMERICAL ORDER (smallest to largest), then eliminate the extremes until we're at the middle. (basically chopping off the end till you get to the middle)  Therfore The answer would be 4.

Answer:

The mode would be: 4

Step-by-step explanation:

The mode is Get the data in NUMERICAL ORDER, and see which value is the most frequent (we can have more than one mode).

Answer:

25%

Step-by-step explanation:

firs you do 5 divided by 20 because there are 20 x's. this will = 0.25

0.25 = 25%

I hope I get brainiest. Sorry for taking forever. Have a nice day!

4 0
3 years ago
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