A triangle has side lengths of (5:5x + 6:2y) centimeters, (4:3x + 8:3z) centimeters, and (1:6z-5:1y) centimeters. Which expression represents the perimeter, in centimeters, of the triangle?

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27