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3 years ago

15

jana ran the first 3.5 miles of a 5 mile race in 1/3 hour what was the rate in miles per hour for this first part of the race? e

xplain how you solved the problem

1 answer:

Grace [21]3 years ago

4 0

2.8 1/3 of 3.5 is .7 .7 - 3.5=2.8

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A is inversely proportional to b. If a=7.2 when b=-4, what will a equal when b=6?

Tpy6a [65]

Answer:

<h2>a = - 4.8</h2>

Step-by-step explanation:

To find the value of a when b=6 we must first find the relationship between them.

The statement

a is inversely proportional to b is written as

$a \: \: \alpha \: \: \frac{k}{b}$

where k is the constant of proportionality

When a = 7.2 , b = -4

So we have

$7.2= \frac{k}{ - 4}$

k = 7.2 × - 4

k = - 28.8

So the formula for the variation is

$a = - \frac{28.8}{b}$

When

b = 6

That's

$a = - \frac{28.8}{6}$

We have the final answer as

<h3>a = - 4.8</h3>

Hope this helps you

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Answer:

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