142628281991919182726(35262627282
SOLUTION
A triangle has three sides. The sides of this triangle are 7 inches, 5inches and the unknown side.
Let the unknown side be x inches.
Perimeter is distance around a plane shape.
The perimeter of this triangle is 19,

Therefore, the other side is 7 inches
True. To solve for y you have to subtract 2 from both sides of the equation.
The answer is 0.5778 or 0.578 rounded