Find the value of x so that the figures have the same #9

The perimeter of a shape is the sum of side lengths of the shape.

The value of x so that they have the same perimeter is 4

The perimeter of the triangle is calculated as follows:

Collect like terms

The perimeter of the rectangle is calculated as follows:

Open brackets

When they have the same perimeter;

So, we have:

Collect like terms

Divide by 4

Hence, the value of x is 4

Read more about perimeters at:

link

A , x = 4

The perimeter of the triangle = 5x + 1 +2x + 5 + 3x + 4 = 10x + 10

The perimeter of the rectangle = 2x + 2x + x + 13 + x + 13 = 6x + 26

Equating the 2 perimeter expressions

10x + 10 = 6x + 26 ( subtract 6x from both sides )

4x + 10 = 26 ( subtract 10 from both sides )

4x = 16 ( divide both sides by 4 )

x = 4 → A

a

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step-by-step explanation: