Mathematics: Before a high-school football game the footballs were inflated to p = 13 psi (pounds per square inch). After the game the mean inflation was 12.5 psi. Select the null hypothesis H0. Group of answer choices 0=13 0=12.5 0 13 0 12.5

Before a high-school football game the footballs

Skye251

20.09.2020

57 miles

Step-by-step explanation:

We know that

$speed = \frac{distance}{time}$

We were given that: Sam bikes at a speed of 12⅔ mph.

So we want to find the distance he covers in 4½ hours.

To do this, we need to substitute the speed and time into the equation and solve for distance.

$12 \frac{2}{3} = \frac{distance}{4 \frac{1}{2} }$

This implies that:

$distance = 4 \frac{1}{2} \times 12 \frac{2}{3}$

Let us convert to improper fractions to obtain:

$distance = \frac{9}{2} \times \frac{38}{3}$

$distance =3 \times 19 = 57$

The Sam covers 51 miles in 4.5 hours

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