This is your information...
Length: 2x + 7
Width: 3x + 8y
Perimeter: 2(l + w) ...or... 2l + 2w
Now let's substitute...
2(l + w)
l = 2x + 7
w = 3x + 8y
2(2x+7+3x+8y)
Now combine the like terms:
2(5x+7+8y)
Now distribute the number 2:
10x+14+16y
That is the perimeter
I HOPE THIS HELPED!!!! :D ;D
So you would take 260 miles and divide by 4 hours to get 65 mph. And since the rate slows by 20%, you would subtract 13 from 65 giving you 52. So the new speed of the tornado is 52 mph. And take that and multiply it by 2 hours to get 104 miles. The correct answer is B.
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If a cupcake recipe has instructions to use 1/5 cup of flour for each serving. But if he used 2 cups of flour he made 10 servings