## anonymous one year ago Will Best answer! Last Question: 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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1. anonymous

@AbdullahM @Vocaloid

2. anonymous

How would I determine for x?

3. AbdullahM

Do you know how to calculate area for a rectangle?

4. anonymous

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.

5. AbdullahM

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

6. anonymous

okay

7. AbdullahM

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

8. anonymous

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

9. Vocaloid

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

10. AbdullahM

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

11. AbdullahM

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

12. AbdullahM

^ true...