Question

CAN SOMEONE PLEAAAAAAASE EXPLAIN THIS
Alexei wants to hang a mirror in his boat but the mirror and frame must not have an area larger than 19.25 square feet. The mirror is 3 feet wide and 5 feet long. Which quadratic equation represents the area of the mirror and frame combined? (The border must have equal width on each side.)

Answer 1

Let the width of frame be x, so on either side of mirror there is x ft of frame making entire mirror/frame with (3+2x) wide and (5+2x) long................Area of mirror/frame is (3+2x)*(5+2x) which equals 19.25.

Answer 2

So I get (3+2x)(5+2x)=19.25 and all I have to do is solve it right?

Answer 3

Yes, but you are going to have to use the quadratic formula.

Answer 4

yes..distribute or FOIL, then set equal to zero, then use quadratic formula

Answer 5

THANK YOU

Answer 6

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A graph is shown.

Answer 7

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Answer 8

Check please
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Answer 10

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Answer 11

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Answer 12

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Answer 13

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Answer 14

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Answer 18

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Answer 20

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Answer 21

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