Answer:
M-N=4
Step-by-step explanation:
3x+12=5x-21
-5x -5x
-2x + 12 = -21
-12 -12
-2x=-33
x = 16.5
The answer is -2.75
-0.5m + 2.75m - 5m
(-0.5m + 2.75m) -5m
2.25m - 5m = -2.75
Estimation: 500×7=3,500
Product: 503×7=3,521
1800 ft² = 3 pounds
[divide by 3 through]
1800 ÷ 3 = 3 ÷ 3
600ft² = 1 pound
[8400 ÷ 600 = 14; so multiply by 14 through]
600 x 14 = 1 x 14
8400ft² = 14 pounds
we need 14 pounds to cover 8400 square feet.
[Find number of 4 pounds bags needed]
14 ÷ 4 = 3.5
So we need to use 4 bags of 14 pounds of lawn seeds.
