Lily is going for a run. she runs at a speed of 4 miles per hour for 6.4 miles. for how many hours does she run?

She runs for 1.6 hours

Step-by-step explanation:

For this, one way to do it is to just set 1 hour over 4 miles equal to x hours for 6.4 miles. The reason this is done is because if the speed is constant that means the rate stays the same, which means the ratio of miles to hours should always be the same, so the two ratios must be equivalent.

1/4 = x/6.4

Multiply both sides by 6.4 to get x by itself:

6.4/4 = x

1.6 = x

Hope that helps!

21.4 i did it already for s1

step-by-step explanation:

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