Answer:
8 hours
Step-by-step explanation:
Given:
Sheyna drives to the lake with average speed of 60 mph and
Sheyna drives back from the lake with average speed of 36 mph
It took 2 hours less time to get there than it did to get back.
Let be the time taken to drive to lake.
Let be the time taken to drive back from lake.
hrs ..... (1)
To find:
Total time taken = ?
Solution:
Let D be the distance to lake.
Formula for time is given as:
Putting in equation (1):
So,
So, the answer is:
Answer:
x= first number y= second
x=2y+9 and x+y=129, these are the equations...solving gives x=89,y=40
Step-by-step explanation:
Answer:
one of the answers is E,F
Step-by-step explanation:
I know this becuase that is a pyramid right there it is an solid but no prims or anything else on there
If you do a check (plug in your answer to y) that would be your reason
0.9x12=10.8,, 10.8-6.3=4.5. The number is 12