Tim and fred were able to restock the store in 7 hours together. it takes
fred 9 hours to complete this job alone. without , how long
would it take tim to complete this job?

When 2 people work together the total time equals

Total Time = Time 1 * Time 2 / (Time 1 + Time 2)

Let's solve for Time 1 (which will be Tim's time.)

7 hours = Time 1 * 9 / (Time 1 + 9)

7 * Time 1 + 63 = Time 1 * 9

63 = 2 * Time 1

Time 1 = 30.5 Hours (Tim's Time)

Double Check

Total = 30.5 * 9 / (30.5 + 9)

Total = 274.5  / 39.5

Total = 7 Hours

Again, Tim's Time is 30.5 Hours

Step-by-step explanation:

a) t'(-3, 6) and v'(0, 3)  

step-by-step explanation:

your answer is  

d.

196.5 m2

step-by-step explanation: