Question

Pls explain how to do this

Answer 1

This is obvious that if Rachel only went 9 miles in 1 hour, and Amos traveled 12 miles in 1 hour, and we need to find out how far apart they will be, we can create the equation of:

12 - 9 = 3, meaning they will be 3 miles apart after one hour.

For an explanation, if you look closely, this is extremely easy. It actually tells you how far they go in one hour, as MPH stands for Miles Per Hour. It tells you that Rachel travels 9 hours in an hour and Amos travels 12 hours in an hour. They left at the same exact time from the same point... so you just need to calculate the difference between 12 and 9, which is 3!

Answer 2

They are 15 miles apart.

Explanation:

We can use the Pythagorean theorem.

The distance up is 12.

And the distance right and left is 9.

Using a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse,

9^2 + 12 ^2 = c^2

81+144 = c^2

225= c^2

Taking the square root of each side,

sqrt(225) = sqrt(c^2)

15 = c

They are 15 miles apart.