The matrices 
and 
are inverses of each other. Use this fact to solve the system 
.
What will be an ideal response?
x = 9, y = -2, z = -2
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Find dy/dx without eliminating the parameter.x = 
, y = 
A. 
B. 
C. 
D. 
Solve the problem.Two cars leave an intersection. One car travels north, the other east. When the car traveling north had gone 12 miles, the distance between the cars was 4 miles more than the distance traveled by the car heading east. How far had the eastbound car traveled?
A. 12 miles B. 20 miles C. 24 miles D. 16 miles
Write the system of inequalities that describes the possible solutions to the problem.The Acme Class Ring Company designs and sells two types of rings: the VIP and the SST. The company can produce up to 40 rings each day, using up to 100 total man-hours of labor. It takes 2 man-hours to make one VIP ring and 5 man-hours to make one SST ring. Let x represent the number of VIP rings, and let y represent the number of SST rings. Including the system inequalities 
and 
, find the remaining inequalities that best describe this company's ring production.
A. x + y ? 40, 5x + 2y ? 100 B. x ? 40, y ? 40, 5x + 2y ? 100 C. x + y ? 40, 2x + 5y ? 100 D. x ? 40, y ? 40, 2x + 5y ? 100
Solve the equation on the interval 0 ? ? < 2?.cos(2?) = 
- cos(2?)
A. 
B. 
C. 
D. No solution