Answer:
the answers are : A , B , and E. i just took the assignment.
Step-by-step explanation:
To burn off one pound,
100 cal * x = 3500
x= 35
You'll need 35 15 minutes to burn off one pound so, 525 minutes per pound, and you need to lose 7 pounds so,
525*7 = 3675 minutes OR 61.25 hours
Answer:
420 seconds in 7 minutes
Step-by-step explanation:
Answer:
20 in.
Step-by-step explanation:
You can use similar triangle ratios to solve for this problem.
6/15=4/x, Now cross multiply to solve for x
6x=60, x=10 Find the perimeter
10+6+4=20, the perimeter of MNO is 20 in.
So the total they made was $775.
This can also be written as:
5x + 8y = 775
Also to determine the number of cars they washed with each type of service:
x + y = 125
So, the first system of equations is correct.
