Steps for solving 4x - 12 = 20 are shown. Explain how Step 3 helps solve the equation. 4x-12-20 Original equation 4x- 12+12-20 +12 Step 1 4x - 32 Step 2 4x 32 Step 3 4 4 X-8 Step 4 A. Dividing both sides by 4 eliminates the variable. B. Multiplying both sides by 4 isolates the variable. C. Dividing both sides by 4 isolates the variable. O D. Multiplying both sides by 4 undoes the division.

d. vertex

step-by-step explanation:

the answer is (-8,-5)

step-by-step explanation:

the endpoint to midpoint is half the length. the length is (-2,-1) so when you are at the midpoint just add it to it to find your answer -6+(-2)= -8 and -4+(-1)=-5 so (-8,-5)

sadsdda

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.