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Serggg [28]
4 years ago
7

The width of a rectangular block of land is 2/7 of its length. If it’s perimeter is 252m, find it’s length.

Mathematics
1 answer:
Anna007 [38]4 years ago
3 0

Answer:

Step-by-step explanation:

the  perimeter is : p = 2(x+y)..... x : width     y : length

you have the system ;  2(x+y) = 252.......(1)

                                       x = (2/7) y ...........(2)

                                       y > x ....(3)

Substitute x = (2/7) y  into (1) and simplifiy and solve for y :

(2/7) y + y = 126

(2y+7y)/7 = 126

9y = 882

y = 98 m  ( the length )

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