The perimeter of the triangle below is 73 units. Find the value of x.

Mathematics

2 answers:

Evgesh-ka [11]1 year ago

6 0

Answer:

3x+4x-1+x+2=73

8x+1=73

8x=73-1

8x=72

8x/8=72/8

x=9

In-s [12.5K]1 year ago

3 0

<h2><u>Solution</u>:</h2>

Perimeter (p) of a triangle:

$p = a + b + c$

P = 73 units

To find the value of x

$73 = 3x + 4x - 1 + x + 2$

→ $73 = 8x + 1 \\ 73 - 1 = 8x$

→ $8x = 72$

→ $\frac{8x}{8} = \frac{72}{8}$

$x = 9$

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