Robert finished the race 20 seconds before Tom. Tom finished the race in 95 seconds. Which expression shows the number of seconds that it took Robert to finish the race?

If Tom finished the race in 95 seconds and Robert finished 20 seconds before Tom, Robert finished in 75 seconds.

The expression that shows this is 95-20=75.

i dont know sorry

step-by-step explanation:

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80