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3 years ago

1. In 25 minutes Li can run 10 laps around the track. Determine the number of laps she can run per minute.

Mathematics

2 answers:

antiseptic1488 [7]3 years ago

8 0

Answer:

For the first example, the constant of proportionality should be .4 of a mile, meaning that Li can run .4 mile per minute. The equation should be .4x = y. For the second example, it is easy to find the constant of proportionality because it is given, which is 2. The equation to represent this would be 2x = y.

Step-by-step explanation:

The reason why the constant of proportionality is .4 is because I used the ratio from before and compared it to the one needed. I simply turned the ratios into fractions and I cross multiplied before turning it into a equation to solve to find .4 as the constant of proportionality. The equation should be .4x = y because x = the amount of minutes Li ran, and y = the total amount of miles she ran. The reason why the constant of proportionality is 2 in the second problem is because Jennifer is paying 2 per pound, which is the unit rate. If we are looking at the cost per pound, it would mean that 2 is the constant of proportionality. The reason why the equation to represent this would be 2x = y is because x = the amount of pounds, and y = the total amount of money, which represents the situation.

Jlenok [28]3 years ago

3 0

That answer is correct to this question^^

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Answer:

(a)Sample 1

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Step-by-step explanation:

The mean is ∑fx/∑f

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Sample 2

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

Hello!

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