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A bricklayer uses the formula N=7LH to estimate the number of bricks, n, needed to build a wall that is L feet long and H feet high. Which of the following correctly expresses L in terms of N and H?


A)L= 7/NH
B)L= H/7N
C)L= N/7H
D)L= N/7+H

Respuesta :

C is the answer and expresses the terms
facundo3141592

Answer: Option C

Explanation: Here we have the equation: N = 7LH

If we want to isolate L in one side of the equation, the steps are the following ones:

N = 7LH

First, divide both sides by the number 7, this does not affect equality.

N/7 = (7LH)/7 = LH

Now, we divide both sides of the equation by H.

N/(7H) = LH/H = L

Now we have the equation L = N/(7H), this mean that the right option is C.

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