Which equation requires the multiplication property of equality to be solved?
1: 6a=420
2: a+6=420
3:a/6=420
4:a-6=42

The Third answer is correct in this problem

Step-by-step explanation:

just think, with addition you use subtraction to find the answer. So multiplication property basically means to multiply. If you look at the third answer there is a division problem. To be able to find the answer you would use the multiplication property.( just use opposites as a shorter way to explain) your not really solving it your really just predicting.

C. a/6=420

Step-by-step explanation:

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.