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If a regular triangle has a perimeter of #15x+84#, what is an expression for the length of one of its sides?

Answer 1

Eli Assouline

side = #5x+28#

A regular triangle has 3 sides which are equal in length and the size of each angle is #60°#

TO find the length of one side, divide the perimeter by 3.

side = #(15x+84)/3#

#=5x +28#

An exact answer cannot be calculated until the value of #x# is known.

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Answer 2

Eva Abramson

The expression for the length of one side of the regular triangle is (15x + 84) / 3.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.