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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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Alberta Doan worked 6 hours at time-and-a-half pay and 3 ¼ hours at double-time pay. Her regular pay rate was $9.72 an hour. Wha
natka813 [3]

Answer:

Alberta's total overtime pay of the week was $ 145.80.

Step-by-step explanation:

Given that Alberta worked 6 hours at time-and-a-half pay, and 3 hours at double-time pay, and that the value of her regular work hour is $ 9.72, to determine the value of the pay of his overtime, the following equation must be performed:

6x1.5x9.72 + 3x2x9.72 = X

9x9.72 + 6x9.72 = X

87.48 + 58.32 = X

145.8 = X

Therefore, Alberta's total overtime pay of the week was $ 145.80.

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3 years ago
A summer camp had
trapecia [35]

The equation that relates the number of campers this year to the number of campers last year is c = 440 / 1.10

The number of campers last year is 400.

<h3>What are percentages?</h3>

Percentage can be described as a fraction out of an amount that is usually expressed as a number out of hundred. Percentages are used to measure frequency.

<h3>How many campers attended last year?</h3>

The number of campers last year = number of campers this year / (1 + percentage increase)

440 / 1.1 = 400

To learn more about percentages, please check: brainly.com/question/25764815

3 0
2 years ago
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Answer:

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Step-by-step explanation:

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Iris has found some dinosaur bones and a fossil footprint. The length of the footprint is 40​ cm, the length of the thigh bone i
kirza4 [7]

Answer:

(a) \dfrac{foot \ print \ length }{dinosaurs \ length }= \dfrac{2}{35}

(b)The body length of the dinosaur is 525 cm

Step-by-step explanation:

Question

(a) What is the ratio of the length of the footprints in the dinosaur length?

(b) Iris found a new track she believes was made by the same species of dinosaur. If the footprint was 30 cm long and if the same ratio of foot length to body length holds, how long is the dinosaur?

(a)

Given that:

The length of footprint = 40 cm

the thigh bone = 100 cm

the body length = 700 cm

∴

\dfrac{foot \ print \ length }{dinosaurs \ length }= \dfrac{40}{700}

\dfrac{foot \ print \ length }{dinosaurs \ length }= \dfrac{4}{70}

\dfrac{foot \ print \ length }{dinosaurs \ length }= \dfrac{2}{35}

(b)

suppose p,q,r,s are real numbers, where q ≠ 0 & s ≠ 0.

Then:

\dfrac{p}{q}=\dfrac{r}{s} is a proportion if and only if ps = qr

Given that:

length of footprint = 30 cm

If possible the body length of the dinosaur is q (cm)

The length of how long the dinosaur is can be computed as:

\dfrac{30}{q}=\dfrac{2}{35}

2q = 30 * 35

q = (30 * 35)/2

q = 525 cm

6 0
3 years ago
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