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4. The area of the rectangle shown is 200 square units. Find the value of x.

4. The area of the rectangle shown is 200 square units. Find the value of x.-example-1
User Ben Vitale
by
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1 Answer

7 votes

Answer:

x = 40

Explanation:

The area (A) of the rectangle is calculated as

A = lb ( l is the length and b the breadth )

Here A = 200, l = 8 and b =
(1)/(2) x + 5, thus

8 ×(
(1)/(2) x + 5) = 200 ( divide both sides by 8 )


(1)/(2) x + 5 = 25 ( subtract 5 from both sides )


(1)/(2) x = 20 ( multiply both sides by 2 )

x = 40

User Ergin
by
8.9k points

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