Solve using Cramer's Rule.
-Jerry has 3 pieces of string. The total length is 102 inches. The sum of the two longer pieces is 83. The middle piece is twice as long as the shortest piece. What are the lengths of the 3 pieces?
A) 9.5, 19, and 73.5 inches
B) 19, 38, and 45 inches
C) 19, 45, and 55 inches
D) No solution

Question

Quizplus · Accepted Answer

Using Cramer's Rule, the system of equations is: x + y + z = 102, y + z = 83, y = 2x. Solving these gives x = 19, y = 38, z = 45.

Solve Using Cramer's Rule