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[3.05] In, angle C is (7x - 3) degrees and segment AB = (3x + 12)mm.

Part a. What value of x would make equilateral?
Part b. What is the perimeter or sum of the lengths of the sides of the equilateral triangle? Be sure to include the unit of measure in your solution

1 answer

All of the angles of an equilateral
triangle are equal: A=B=C=(7X-3)=60deg.
X=9(no units).

All of the sides are alsoequal:AB=BC=AC
=(3X+12)mm, P=3(3X+12)==9X+36=9(9)+36=
117mm.
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