Mathematics: Atriangle has a perimeter of 7x-2y+15 and has sides of length 5x+y and 7+x , what is the length of the third side?

Atriangle has a perimeter of 7x-2y+15 and has

lallenma

12.03.2022

Answer : Third side will be x-3y+8 .

Explanation :

We have given that,

Length of first side of triangle = 5x+y

Length of second side of triangle = 7+x

Perimeter of triangle = 7x-2y+15

Now , we know that " Perimeter means sum of boundary",

So,

$Perimeter = 5x+y+7+x+\text{ third side}\\7x-2y+15=5x+y+7+x+\text{third side}\\7x-2y+15-5x-y-7-x=\text{third side}\\x-3y+8 = \text{third side}$

So, Length of third side will be x-3y+8.

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tporter00

15.03.2023

the answer is 5 for $3.50

Step-by-step explanation:

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