Answer:
Step-by-step explanation:
go to the back of the book
D
took the test
5√202
By Pythagoras theorem,
x^2 = 45^2 + 55^2
= 2025 + 3025
x^2 = 5050
x = 5√202
2 hours
270 = (70+65) * t
270= 135t
t = 2