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. If the desirable heart rate for a man is 135 beats per minute, how old is he?
a.
22.5 years old
b.
40 years old
c.
45 years old
d.
42.5 years old
Answers (1)
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Medical researchers have determined that for exercise to be beneficial, a person's desirable heart rate, R, in beats per minute, can be ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
The base of a triangle is one third its height. If the area of the triangle is 24 square inches, what are the base and height of the triangle? a. 3in, 9in c. 2in, 6in b. 8in, 24in d. 4in, 12in
Answers (1)
Paradise Kitchens proposes entering 17 new metropolitan markets in the next five years. For this reason, the financial plan cannot use simple trend extrapolation. Instead, the forecasting method used was
Answers (2)
Explain why there is no solution to the inequality |x - 2| < - 2.
Answers (1)
8. find the simplified form of the expression. give your answer in scientific notation. (3 x 10^6) (8 x 10^-4) a) 1.1 x 10^3 b) 2.4 x 10^3 c) 1.1 x 10^-23 d) 2.4 x 10^-23
Answers (1)
Choose the ordered pair (x, y) that is a solution of the equation. - 8x + 5y = 96
Answers (1)
New Questions in Mathematics
What number is 62.5% of 195?
Answers (2)
2/w=0.4/0.7 what is w?
Answers (2)
2.6 as an improper fraction
Answers (1)
The length of a rectangle is 7cm less than twice it's width. If the area is 30 sq. cm, find the dimensions
Answers (2)
Heights of 10 year-olds, regardless of gender, closely follow a normal distribution with mean 55 inches and standard deviation 6 inches. Which of the following is true? Roughly 95% of 10 year-olds are between 37 and 73 inches tall.
Answers (1)