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Alik [6]
2 years ago
6

The perimeter of quadrilateral JKLM is 90 centimeters. Which is the length of side KL?

Mathematics
2 answers:
Andrew [12]2 years ago
8 0

Answer;

-13 cm

Explanation;

The perimeter of quadrilateral JKLM is 90 centimeters.

JK = n + 7

KL = n

JM = 3n + 4

LM =  2n-12

Therefore; since the perimeter is the sum of the lengths of all the sides;

= n + n+7 + 3n + 4 + 2n -12 = 90

= 7n - 1 = 90

7n = 91

n = 91/7

n =  13 cm

Hence; KL = 13 cm

SCORPION-xisa [38]2 years ago
5 0
The figure is not given for this question. It would be more helpful if you understand what is a perimeter. The sum of the side lengths of a shape is called the perimeter. A quadrilateral is a polygon with four edges which means four side. Side KL should be one of them. The length of this side should be 90 minus the 3 side lengths. Hope this could help.
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