Answer:
4
Step-by-step explanation:

The change in elevation is -15 meters
Answer:
4 hours
Step-by-step explanation:
11 x 4 equals 44 plus he read 5 pages so its 49
It will take 6.875h for the second car to overtake the first...
Answer:The formula for a can be calculated by the following steps;
Step-by-step explanation:
-3a-a=4b-6b
-4a=-2b
cancelling the negative sign;
4a=2b
a=2b/4
a=b/2