Only geniuses can answer this question! also 20 points!

on a trip to visit relatives you drive 1,115.625 miles over the course of 21
hours and 15 minutes. what was the unit rate of the speed of your vehicle in miles
per hour? round to the nearest tenth of a mile.

Step-by-step explanation:

1,115.625 miles in 21 hrs and 15 min

15 minutes = 15/60 = 0.25 hrsso they did it in 21.25 hrs

1,115.625 / 21.25 = 52.5 miles per hr <===

your answer is 23/2 - 13.5

step-by-step explanation:

7/2 evaluates to

multiply x and 4.5

multiply x and 1

the x just gets copied along.

the answer is x

x

4.5*x evaluates to 4.5x

multiply 3 and 4.5x

multiply 1 and x

the x just gets copied along.

x

4.5*x*3 evaluates to 13.5x

7/2-4.5*x*3 evaluates to

  + 8 =

the answer is

7/2-4.5*x*3+8 evaluates to

the correct answer is 828.07