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4 years ago

If y varies directly with x and x=21 and y=14, what is the constant of proportionality?

1 answer:

7 0

Y varies directly with x
y = kx

y=14
x=21

14 = 21k

$\frac{14}{21}$ = $\frac{21k}{21}$
21 and 21 cancels out

$\frac{2}{3}$ = k

The constant of this proportionality is $\frac{2}{3}$

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3 years ago

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3 years ago

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3 years ago

The ground temperature at airport is 12 degrees. The temperature decreases by 5.2 degrees for every mile above ground. What woul

algol13

Answer:

The outside plane located at 3 miles above the airport is of -3.6 degrees.

Step-by-step explanation:

The ground temperature at airport is 12 degrees. The temperature decreases by 5.2 degrees for every mile above ground.

This means that the temperature in n miles above ground is given by:

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3 years ago

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