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A rectangle has an area of 72 square units. The width of the rectangle is 9 units. The length of the rectangle is 2x + 4.

What is the rectangle's length?

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A rectangle has an area of 72 square units. The width of the rectangle is 9 units. The length of the rectangle is 2x + 4.

What is the rectangle's length?

anonymous · Answer

@AbdullahM 
@Vocaloid

anonymous · Answer

How would I determine for x?

abdullahm · Answer

Do you know how to calculate area for a rectangle?

anonymous · Answer

To be honest no, I havne't learned about it... My teacher said it was a trick question, and if we figured it out and explained it to him he would give us a prize.

abdullahm · Answer

$\sf\Large Area = Length \times Width$

anonymous · Answer

okay

abdullahm · Answer

They gave you

$\sf Area=72\ Width = 9\Length = 2x+4$

anonymous · Answer

the length... how would we determine the length?

vocaloid · Answer

area = length*width
72 = length*9

solve for length

x is actually irrelevant in this question

abdullahm · Answer

So, first lets plug that into the formula and then see. :)

abdullahm · Answer

$\sf\Large 72 = (2x+4) \times 9$

abdullahm · Answer

^ true...