Use Cramer's rule to solve the system. x + 2y - 3z + w = 7 3x + 4y - z + 2w = 4-2x + y + z - w = -3 x - y + 2z - 2w = 1
A. 
B. 
C. 
D. 
Answer: D
You might also like to view...
Nathan is shopping for automobile tires. Surefire’s Repair Shop has a set of four tires for $456. Next month, Surefire’s is having a sale on these tires where you get four tires for the price of three tires. What is the price for a set of four tires during the special sale?
A. 114 B. 342 C. 456 D. 228
Perform the indicated operations and attach the correct units to the answer.
(4.4 gal)
A. 180 mi B. 9.0 gal C. 9.0 mi D. 180 gal
Find the standard deviation for the given data. Round your final answer to one more decimal place than that used for the observations.The manager of a small dry cleaner employs six people. As part of their personnel file, she asked each one to record to the nearest one-tenth of a mile the distance they travel one way from home to work. The six distances ( in miles) are listed below.14.2?14.9?26.8?46.9?11.5?17.7
A. 2904.0 mi B. 3787.0 mi C. 13.29 mi D. 36.9 mi
Make the conversion indicated. Round your result to the nearest tenth.45°C = 
°F
A. 138.6 B. 16.3 C. 113.0 D. 57.0