Solve the system using the inverse matrix method.
A. x = -36, y = -12, z = 2; (-36, -12, 2)
B. x = 31, y = -35, z = 10; (31, -35, 10)
C. x = 15, y = -62, z = 1; (15, -62, 1)
D. x = 17, y = 25, z = 14; (17, 25, 14)
Answer: B
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Solve the right triangle. If two sides are given, give angles in degrees and minutes.
B = 68°35', b = 8 kmRound side lengths to one decimal place.
A. A = 21°25'; c = 21.9 km; a = 3.1 km B. A = 21°25'; c = 21.9 km; a = 8.6 km C. A = 21°25'; c = 8.6 km; a = 21.7 km D. A = 21°25'; c = 8.6 km; a = 3.1 km
Perform the indicated operations.( 3x2 - 3x - 2) + ( -6x2 - 9x + 8)
A. 3x2 + 12x + 6 B. 9x2 - 12x - 10 C. 9x2 - 12x + 10 D. -3x2 - 12x + 6
Solve the problem.A hot dog stand sells hot dogs with cheese, relish, chili, tomato, onion, mustard, or ketchup. How many different hot dogs can be concocted using any 5 of the extras?
A. 2,520 B. 42 C. 1,260 D. 21
Use mathematical induction to prove that the statement is true for every positive integer n.4 + 8 + 12 + ... + 4n = 2n(n + 1)
What will be an ideal response?