Question

This isosceles triangle has two sides of equal length, a, that are longer than the length of the base, b. The perimeter of the triangle is 15.7 centimeters. The equation 2a + b = 15.7 models this information.

If one of the longer sides is 6.3 centimeters, which equation can be used to find the length of the base?

Answer 1

Answer:

BASE=3.1 cm

Step-by-step explanation:

Isosceles triangle has 2 equal sides that are longer than length of base

perimeter=15.7

equation is 2a+b=15.7

so if the longer side is 6.3, what is length of base

we know that identical sides are bigger so 6.3 is one of the identical sides

2a means the 2 identical sides

2(6.3)+b=15.7

12.6+b=15.7

subtract 12.6 from both sides

b=3.1

hope it helps u

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