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3 years ago

8

A room has an area of 216 square feet. One dimension is 6 feet more than the other. Find the length of the longer side.

2 answers:

zlopas [31]3 years ago

3 0

The dimensions would be x and x+6. The area is 216.

x(x+6) = 216
x^2 + 6x - 216 = 0
(x-12)(x+18) = 0

x = 12---Yes---
x = -18---No, sides cannot be negative---

If one side is 12, the other side is 18. To check:

12 * 18 = 216
216 = 216

Correct

kicyunya [14]3 years ago

3 0

He correct cause I just did it. ;)

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3 years ago

Add: <br> 3x+9+8x + 12<br> 2x + 6+x² + 6x + 9

Oxana [17]

I'll treat these like they're two seperate problems because how you set it up they're not together. If it's one whole problem please tell me and I'll solve it that way. :-)

First one: 3x+9+8x + 12

Collect like terms and simplify

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Collect like terms and simplify

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Hope this helps you, have a BLESSED and wonderful day, as well as a safe one!

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3 years ago

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miss Akunina [59]

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Step-by-step explanation:

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