An equilateral triangle has a perimeter of 15x to the power of 3 + 33x to the power of 5 feet. What is the length of each side?

Question

AZ · Answer

What can you tell me about the sides of an equilateral triangle?

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AZ · Answer

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An equilateral triangle has three sides that are all equal. It also has three equivalent angles. Each angle is $ 60^o$

So the perimeter of an equilateral triangle is
Perimeter = side + side + side

And since each side is the same value we get
Perimeter = 3 * side

So your question has given you the perimeter and they want you to calculate the side. Do you know what to do from here?