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gulaghasi [49]
3 years ago
15

When exercising, the maximum heart rate (r ) in beats per minute is modeled by the equation shown in the box, where (a ) represe

nts the age of the person in years. r = 220 - a If Sanchez is 34 years old, what is his maximum heart rate?
Mathematics
1 answer:
worty [1.4K]3 years ago
7 0

Answer:

186 beats per minute

Step-by-step explanation:

The maximum heart rate (r ) in beats per minute is modeled by the equation :

r = 220 - a ...(1)

Where

a is age of the person in years

If Sanchez age is, a = 34 years

Put a = 34 in equation (1)

r = 220 - 34

= 186 beats per minute

Hence, the maximum heart rate is 186 beats per minute.

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8 out of 200 is what percent
kipiarov [429]
Hey there! 

Here are the steps involved in answering this question:

1. Write 8 out of 200 as a fraction which is \frac{8}{200}

2. Turn the fraction into a decimal. To do this, divide the numerator by the denominator. The numerator is the top part of the fraction while the denominator is the bottom part of the fraction.

\frac{8}{200}  = 0.04

3. You get 0.04. Now, turn this into a percent. Move the decimal, 2 places to the right or just multiply the decimal by 100.

0.04 = 4%

The final answer is 4%.

Another way of doing this is to get 100 as a denominator.
Since, percent means, "Out of 100", we have to make the denominator 100.

1.  \frac{8}{200} = 4/100

Just divide each side by 2.

Again, the final answer is, 4%

<span>(If you feel that my answer has helped you, please consider rating it and giving it a thank you! Also, feel free to make the best answer, the brainliest answer!)
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<span>Thank you! :D</span>
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Answer:

D; D

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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yulyashka [42]
Looks good to me! ;)
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