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3 years ago

The perimeter of the triangle is 40 units.Which of the following equations could be used to find the value of x?

Mathematics

1 answer:

Artyom0805 [142]3 years ago

5 0

Answer:

13x + 112 = 320.

Step-by-step explanation:

The perimeter is the sum of the 3 sides:

1/2 x + 3/8 x + 11 + 3/4 x + 3 = 40

1/2 x + 3/8 x + 3/4 x + 3 + 11 = 40

1/2 x + 3/8 x + 3/4 x + 14 = 40

Multiply through by 8 to remove the fractions:

4x + 3x + 6x + 14 = 40

13x + 112 = 320.

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