3 years ago

Twice the sum of six "x" and seventy eight.

Mathematics

1 answer:

kogti [31]3 years ago

6 0

Answer:

2(6x+78)

Unless it's the exact number. You hadn't specified what x is.

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Answer:

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Step-by-step explanation:

The formula to find the area of a rectangle is $A = LxW$ . Since we have a value for the width, we simply need to find what to multiply to 6 to get 42.

Let x = length

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We then divide both sides by 6 to find the value of x.

$\dfrac{6x}{6}=\dfrac{42}{6}$

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To check the answer we substitute x with 7.

$6(7)=42$

$42=42$

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