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Orlov [11]
2 years ago
7

The graph shows the relationship between James’s resting heart rate and the number of hours he exercises per day. For every hour

of exercise, James’s resting heart rate decreases by about (1,5,15,20) beats per minute. His resting heart rate is about (50.5, 70, 77.5,82.5) beats per minute when he exercises 4 1/2 hours a day.

Mathematics
2 answers:
Umnica [9.8K]2 years ago
7 0

Answer:

decreases by about 5 beats per minute

His resting heart beat is about 80 beats per minute

Step-by-step explanation:

sweet-ann [11.9K]2 years ago
6 0

Answer:

dude im in 8th grade and im getting college math no wonder i have a D-

Step-by-step explanation:

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MissTica

Answer:

a solution is 1/2 *tan⁻¹ (2*y) = - tan⁻¹ (x²) + π/4

Step-by-step explanation:

for the equation

(1 + x⁴) dy + x*(1 + 4y²) dx = 0

(1 + x⁴) dy  = - x*(1 + 4y²) dx

[1/(1 + 4y²)] dy = [-x/(1 + x⁴)] dx

∫[1/(1 + 4y²)] dy = ∫[-x/(1 + x⁴)] dx

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I₂=  ∫[-x/(1 + x⁴)] dx = -∫[1/(1 + u² )] du = - tan⁻¹ (u) +C₂ =  - tan⁻¹ (x²) +C₂

then

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for y(x=1) = 0

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C= π/4

therefore

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