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2 years ago

14

in an isosceles triangle two sides are equal. the third side is 2 less than twice the length of the sum of the two sides. the pe

rimeter is 40. what are the lengths of the 3 sides

1 answer:

egoroff_w [7]2 years ago

4 0

Answer:

s for length of either equal side

b for the unequal side

b=-2+2*(s+s) and 2s+b=40

b=2*2s-2

b=4s-2

2s+4s-2=40

6s-2=40

6s=42

s=7

b=4*7-2

b=28-2

b=26

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