Question

Answer the question.thank you

Answer 1

Perimeter of Triangle:
`6x+15`

`x=12.5`

Explanation:

The perimeter is the sum of all of the sides of the triangle.

Hence, the perimeter
`=3x+3x+15=6x+15`

Since the perimeter is 90,
`6x+15=90`.

Subtract 15 from both sides:

`6x+15-15=90-15`

`6x=75`

Divide both sides by 6:

`(6x)/(6)=(75)/(6)`

`x=12.5`