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jolli1 [7]
3 years ago
7

The diameter of each wheel of a bicycle is 28 inches28 inches. if you are traveling at a speed of 40 miles per hour40 miles per

hour on this​ bicycle, through how many revolutions per minute are the wheels​ turning?
Mathematics
1 answer:
bagirrra123 [75]3 years ago
4 0
Convert 10 miles into inches:
10 miles = 10*5280 = 52800 feet 633600 inches

(pi)d = (3.14) = 87.92 inches per revolution
633600/87.92 =7206.55 revolution per hour
convert to revolution per min:
7206.55 rev/hr * 1/160 hr/min
120.1 revolution per minute
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gizmo_the_mogwai [7]

Answer:

She went on the slide 8 times and on the roller coaster 4 times

Step-by-step explanation:

We convert each statements to a mathematical equation.

Firstly, let's represent the number of times she went on the coaster with R and the number of times on the slide with S. We know quite well she went on 12 rides. Hence the summation of both number of times yield 12.

Mathematically, R + S = 12. ........(i)

Now we also know her total wait time was 3hours. Since an hour equals 60 minutes, her total wait time would equal 180 minutes.

To get a mathematical representation for the wait time, we multiply the number of roller coaster rides by 25 and that of the slides by 10.

Mathematically, 25R + 10S = 180 .......(ii)

Here we now have two equations that we can solve simultaneously.

From equation 1 we can say R = 12 - S. We can then substitute this into equation 2 to yield the following:

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5 0
3 years ago
HELP PLEASE IM STUCK
Ludmilka [50]
A. y=180-15m
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(x-3,y-4) = correct

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