Doctors use the term maximum heart rate (MHR) when referring to the quantity found by starting with 220 beats per minute and subtracting 1 beat per minute for each year of a
person’s age. Doctors recommend exercising 3 or 4 times each week for at least 20 minutes
with your heart rate increased from its resting heart rate (RHR) to its training heart rate
(THR), where THR = RHR + .65(MHR – RHR)
Which of the following is closest to the THR of a 43-year-old person whose RHR is 54 beats
per minute?
A. 197
B. 169
C. 162
D. 134
E. 80

Answers

Answer 1

Answer: THR = RHR + 0.65(MHR - RHR)
For a 43 year old person, MHR = 220 - 43 = 177

THR = 54 + 0.65(177 - 54) = 54 + 0.65(123) = 54 + 79.95 = 133.95 ≈ 134.

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As Jupiter revolves around the sun, it travels at a speed of approximately 8 miles per second. Convert this speed to miles per minute. At this speed, how many miles will Jupiter travel in 4 minutes? Do not round your answers.

Answers

Jupiter travels at 480 miles per minute and in 4 minutes, it will travel 1920 miles.

What is speed?

Speed is defined as the ratio of the time distance travelled by the body to the time taken by the body to cover the distance.

First to convert it you need to multiply 8 miles per second by 60 seconds because there are 60 seconds in a minute:

8 miles x 60 s

1 second 1 min

The unit of seconds will cancel out so you will get 480 miles/ min

To get how far it travels in 4 min you need to multiply the speed by 4 minutes

480 miles x 4 min

1 min

The unit of minutes will cancel out to get 1920 miles

Therefore, Jupiter travels at 480 miles per minute and in 4 minutes, it will travel 1920 miles.

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First to convert it you need to multiply 8 miles per second by 60 seconds because there are 60 seconds in a minute:

8 miles x 60 s
1 second 1 min

The unit of seconds will cancel out so you will get 480 miles/ min

To get how far it travels in 4 min you need to multiply the speed by 4 minutes

480 miles x 4 min
1 min

The unit of minutes will cancel out to get 1920 miles

Therefore, jupiter travels at 480 miles per minute and in 4 minutes, it will travel 1920 miles.

The perimeter of a rectangle swimming pool is 160 feet. The length of the swimming pool is four times its width . Find the dimensions of the swimming pool.

Answers

Formula for Perimeter of Rectangle:

P = 2(L + W)

Plug in 160:

160 = 2(L + W)

L = 4W
So we can plug in '4W' for 'L' in the first equation.
160 = 2(L + W)

160 = 2(4W + W)

Combine like terms:

160 = 2(5W)

160 = 10W

Divide 10 to both sides:

W = 16

Now we can plug this back into any of the two equations to find the length.

L = 4W

L = 4(16)

L = 64

So the width is 16, and the length is 64.

The length of the swimming pool is 64 feet long, and the width is 16 feet long. So the pool is 64' by16'

A local little league has a total of 95 players of whom 80% are left handed how many left handed players are there