SOLUTION: A runner’s heart rate in beats per minute is given by the formula Heart rate = 65 + 53 / (4t + 1) where t is the number of minutes after the start of a cool-down period. Find the
Algebra.Com
Question 304898: A runner’s heart rate in beats per minute is given by the formula Heart rate = 65 + 53 / (4t + 1) where t is the number of minutes after the start of a cool-down period. Find the runner’s heart rate in 10 minutes. When is the runner’s heart rate equal to 68 beats per minute?
I tried to substitute 10 for "t" because it said t represents the minutes. I tried to solve it like that but got a answer 4718/41. Could you please help me set this equation up so I can learn how to do it and how to get the answer. Thanks
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
A runner’s heart rate in beats per minute is given by the formula Heart rate = 65 + 53 / (4t + 1) where t is the number of minutes after the start of a cool-down period. Find the runner’s heart rate in 10 minutes.
:
H.R. = 65 +
H.R. = 65 +
H.R. = 65 + 1.3
H.R. = 66.3
:
When is the runner’s heart rate equal to 68 beats per minute?
65 + = 68
Subtract 65 from both sides
= 68 - 65
= 3
Multiply both sides (4t+1)
53 = 3(4t+1)
53 = 12t + 3
53 - 3 = 12t
50 = 12t
t =
t = 4.2 minutes
RELATED QUESTIONS
A runner’s heart rate in beats per minute is given by the formula Heart rate = 65 + 53 /... (answered by CharlesG2)
A runner's heart rate in beats per minute is given by the formula Heart rate = 65 + 53 /... (answered by josgarithmetic)
When Joanne gets a massage, at 6:00 am her heart rate is 81 beats per minute. At 6:30 am... (answered by anomis)
The maximum heart rate is the highest heart rate achieved during maximal exercise. In... (answered by Theo)
The following equation describes a person’s optimum heart rate in beats per minute that... (answered by stanbon)
in order to achieve maximum results from aerobic excercise, one should maintain one's... (answered by Fombitz)
The line graph describes the target Heart Rate, in beats per minute, of a person, age in... (answered by jim_thompson5910)
The maximum heart rate of a person, in beats per minute, can be estimated using the... (answered by Theo)
m=220-a
The given equation models a person’s maximum heart rate m, in beats per... (answered by ikleyn)