Mathematics: Hector has a rectangular garden that measures 13 m wide by 15 m long. he wants to increase the area to 255 m2 by increasing the width and length by the same amount. what will be the length (longer dimension) of the new garden?

Hector has a rectangular garden that measures 13

Ответ:

versaceblooper

10.01.2022

Let x be the length loner
(15+x)*(13+x)=255
x^2+28x+195=255
x^2+28x-60=0
( x-2)(x+30)=0
x=2 or x=-30 (rejected)
Therefore the length longer is 2 m

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Ответ:

lilyrockstarmag

15.05.2020

Mathematics

$\bf \displaystyle \int\limits_{1}^{9}\ \sqrt{x}\cdot dx \iff\displaystyle \int\limits_{1}^{9}\ x^{\frac{1}{2}}\cdot dx
\\\\\\
\cfrac{x^{\frac{1}{2}+1}}{\frac{1}{2}+1}\implies \cfrac{x^{\frac{3}{2}}}{\frac{3}{2}}\implies \left. \cfrac{2\sqrt{x^3}}{3} \right]_{1}^{9}$

you tell us

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Hector has a rectangular garden that measures 13 m wide by 15 m long. he wants to increase the area to 255 m2 by increasing the width and length by the same amount. what will be the length (longer dimension) of the new garden?

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