Answer:
Step-by-step explanation:
Answer:

Step-by-step explanation:
Time already spent on the train is at least 5 hours
Since the trip to Fairbanks take 10 hours, we have that, the sum of the number of hours left, h and the time already spent will be equal to 10.

Answer:
For a balanced seesaw, we have the following proportion:
r1/r2 = W2/W1
r1 = distance Jo is seated from center
W1 = Jo's weight = 65 lb
r2 = distance Tim is seated from center = 6 ft
W2 = Tim's weight = 78 lb
Plug in the numbers and solve for r1.
Step-by-step explanation:
false 2z + 10= 12z
2(z + 5) = 10z