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