Answered

Welcome to Westonci.ca, the ultimate question and answer platform. Get expert answers to your questions quickly and accurately. Our Q&A platform provides quick and trustworthy answers to your questions from experienced professionals in different areas of expertise. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

Medical researchers have determined that for exercise to be beneficial, a person’s desirable heart rate, R, in beats per minute, can be approximated by the formulas

R=143-0.65a for women
R=165-0.75a for men,

where a represents the person’s age. What would the desirable heart rate be for a 46 year old woman?
a. 113 beats per minute
b. 172.9 beats per minute
c. 143.7 beats per minute
d. 63 beats per minute

Sagot :

Giovi
I would say a) 113 beats per minute:
substituting 46 for a in the formula: R=143-0.65a you should get 113.

Answer:

Option a is correct.

The desirable heart rate be for a 46 year old woman is, 113 beats per minute.

Step-by-step explanation:

Here, R represents a person's desirable heart rate(in beats per minute)

and a represents the person's age.

The desirable heart rate of a person's can be approximated by the formulas;

For women:

[tex]R = 143 - 0.65a[/tex]                  ......[1]

For men:

[tex]R = 165- 0.75a[/tex]                 ......[2]

To find the desirable heart rate be for a 46 year old woman.

⇒[tex]a = 46 \text{years old woman}[/tex]

Substitute in [1] we get;

[tex]R = 143 - 0.65(46)=143 -29.9 \approx 113[/tex] beats per minute

Therefore, 113 beats per minute would the desirable heart rate be for a 46 years old woman.



We hope our answers were useful. Return anytime for more information and answers to any other questions you have. Thanks for using our platform. We aim to provide accurate and up-to-date answers to all your queries. Come back soon. We're dedicated to helping you find the answers you need at Westonci.ca. Don't hesitate to return for more.