Multiply mentally.6 × 80
A. 86
B. 560
C. 480
D. 400
Answer: C
Mathematics
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Use Cramer's rule to solve the system. x + y + z - w = 6 2x - y + 3z + 4w = -4 4x + 2y - z - w = -13 -x - 2y + 4z + 3w = 12
A. 
B. 
C. Can't use Cramer's rule, D = 0
D. 
Mathematics
Find the midpoint of the line segment that connects the given points.(-5, -6) and (5, -3)
A. 
B. (-10, -3)
C. (0, -9)
D. 
Mathematics
Multiply.900 × 302
A. 288,000 B. 27,180 C. 271,800 D. 361,800
Mathematics
Find the missing length to the nearest tenth.
A. b = 25.0 m B. b = 24.0 m C. b = 20.0 m D. b = 17.5 m
Mathematics