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tatiyna
3 years ago
11

In an equilateral triangle, all 3 sides are equal length, and the perimeter of an equilateral triangle is 3 times the length of

one side.
If one side measures 12 + 4x, and the measure of another side is 5x + 14, what is the perimeter of the equilateral triangle?
Mathematics
1 answer:
Anarel [89]3 years ago
3 0

Since all the sides are equal, let's set 12 + 4x equal to 5x + 14

12 + 4x = 5x + 14

Subtract 4x from both sides and subtract 14 from both sides.

-2 = x

Let's plug -2 in for x into one of the side measurements.

12 + 4(-2) = 12 + -8 = 4

The perimeter is equal to the measure of one side times 3

4*3 = 12

The perimeter of the equilateral triangle is 12.

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Read 2 more answers
Can someone please help me I do not understand
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The perimeter of a figure is the distance all the way around the figure.

Area is how many units takes up the figure.

Example of perimeter: (attached)

Example of area: (attached, with squares in square)

In this case, the <em>area depends on the perimeter</em>. Count two sides of the rectangle. (Horizontal, and vertically.) Then write what the perimeter is for that. <u>Multiply</u> the two numbers and that will be your area.

Vertically, it is 11. Horizontally, it is 9. I would like you to try to see what to do next, if not, comment!

I hope this helped!

8 0
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