kayleemmonroe05 kayleemmonroe05

05-04-2018
Mathematics

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f a rectangle has a perimeter of 70, a length of x and a width of x - 9, find the value of the length of the rectangle.

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SINAZEUS SINAZEUS

05-04-2018

[tex]( x + (x - 9)) \times 2 = 70 \\( 2x - 9) \times2= 70 \\ 4x - 18 = 70 \\ 4x = 70 + 18 = 88[/tex]
[tex]x = \frac{88}{4} = 22[/tex]
the length is 22

and the width is
22-9=17

good luck

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