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vesna_86 [32]
3 years ago
14

Adina has a rectangular garden that measures 9 m wide by 13 m long. She wants to increase the area to 192 m² by increasing the w

idth and length by the same amount.
What will be the length (longer dimension) of the new garden?

Mathematics
2 answers:
aliina [53]3 years ago
7 0

I have ALL the CORRECT answers for the quiz. Your answer is in the second pic.

vaieri [72.5K]3 years ago
3 0
A=LW and we wish to increase L and W by the same amount to get an area of 192m^2.

(9+2x)(13+2x)=192

117+18x+26x+4x^2=192

4x^2+44x+117=192

4x^2+44x=75

x^2+11x=18.75

(x+5.5)^2=30.25+18.75 

(x+5.5)^2=49

x+5.5=±7

x=-5.5±7, since x>0

x=1.5

13+2(1.5)

16 meters will be the new longer dimension.


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