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borishaifa [10]
3 years ago
10

The perimeter of a triangle whose sides are of lengths 3x,3x+7 and x

Mathematics
2 answers:
amm18123 years ago
8 0
<h3>The perimeter is   7x+7</h3>

The three side lengths of the triangle are

3x, 3x+7, and x

which add to

(3x)+(3x+7)+(x) = (3x+3x+x)+7 = 7x+7

We can optionally factor 7x+7 to get 7(x+1)

algol [13]3 years ago
7 0

Answer:

7x+7

Step-by-step explanation:

The perimeter of a triangle can be found by adding all the side lengths up.

The 3 side lengths are 3x, 3x+7 and x.

We can add these lengths together to find the perimeter.

3x+3x+7+x

Combine like terms. Add all the terms with a variable (x): 3x, 3x and x.

(3x+3x+x)+7

7x+7

The perimeter of the triangle is 7x+7

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