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

Question

3 years ago

12

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 where a represents the person’s age. If the desirable heart rate for a man is 135 beats per minute, how old is he?

Mathematics

1 answer:

MA_775_DIABLO [31] · Answer 1 · 2022-03-20T14:28:03+03:00

MA_775_DIABLO [31]3 years ago

7 0

Answer:

40 years old

Step-by-step explanation:

R, in beats per minute, can be approximated by the formulas , where a represents the person's age.

R= 143 - 0.65a for women

R= 165 - 0.75a for men,