One side of triangle is 2 times the shortest side. The third side is 19 feet more than the shortest side. The perimeter is 79. Find all three sides.

The three side lengths: 15, 30, and 34 feet

Step-by-step explanation:

Let the shortest side be a, then side b = 2a and side c = (b+19)

We are given a+b+c=79

Substituting for b and c

a + 2a + (a + 19) = 79

4a + 19 = 79

4a=79-19=60

4a=60

a=15 feet

b=2*15=30 feet

c=15+19=34 feet