A family drove from Philadelphia to Chicago over two days. The first day they drove 515 miles in 8 hours. The second day they drove 235 miles in 4.5 hours. What was their average
speed in miles per hour over both days?

where's the diagrams?

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

he earned 78.75 in interest.

step-by-step explanation:

1. 2

2. 11

3. 5

4. 6

5. 7

6. 5

7. -1

8. 1

step-by-step explanation: