Use Cramer's rule to solve the linear system.-2x - 2y = -18-2x + 2y = 6
A. (3, 6)
B. (-6, 3)
C. (6, 3)
D. (-3, -6)
Answer: A
Mathematics
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Provide an appropriate response. Solve a2 + b2 = c2 for b.
A. b = 
B. b = 
C.
b = c2 - a2
D.
b = a2 - c2
Mathematics
Solve the equation.9x - (7x - 1) = 2
A. 
B. - 
C. - 
D. 
Mathematics
Solve the problem.A DC-10 jumbo jet maintains an airspeed of 600 miles per hour in a southeasterly direction. The velocity of the jet stream is a constant 50 miles per hour from the west. Find the actual speed and direction of the aircraft. (Round the speed and direction to the nearest tenth.)
A. 565.8 mph; N41.4°E B. 636.3 mph; S41.8°E C. 565.8 mph; S48.2°E D. 636.3 mph; S48.2°E
Mathematics
Evaluate the expression.-64
A. -24 B. 24 C. 1296 D. -1296
Mathematics