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drek231 [11]
3 years ago
12

At a speed of 45 yards per minute, a 120 pound swimmer burns 420 calories per hour and a 172 pound swimmer burns 600 calories pe

r hour. write an equation that models the number of calories burned per hour as a function of the swimmer's weight.
Mathematics
1 answer:
Murrr4er [49]3 years ago
3 0
<span>c = w*45/13 + 60/13 I will be assuming that the equation will be linear since there are only 2 data points available. The form of the equation will be c = aw + b where c = calories burned a = some constant w = weight b = some other constant. If you look at the equation, you'll notice that it looks like the equation for a line i slope intercept form. So first, let's calculate the slope of the desired equation. a = (600-420)/(172-120) = 180/52 = 45/13 = 3.461538462 Now we have the equation c = w*45/13 + b Substitute the values for a known point, giving 420 = 120*45/13 + b Now solve for b 420 = 120*45/13 + b 420 = 5400/13 + b 420 - 5400/13 = b 5460/13 - 5400/13 = b 60/13 = b So now the equation is c = w*45/13 + 60/13</span>
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Step-by-step explanation:

Hello!

The objective is to estimate the average time a student studies per week.

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4.4, 5.2, 6.4, 6.8, 7.1, 7.3, 8.3, 8.4

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Using a confidence level of 95% you'd expect that the average time a student spends studying per week is contained by the interval [5.6;7.88]

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