Simplify the expression.-4(6x + 3) + 10(4x + 5)
A. 2x - 1
B. 16x + 3
C. -36x
D. 16x + 38
Answer: D
Mathematics
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Solve by the method of elimination by addition or subtraction.-6x + 3y = 9-12x = 7 - 6y
A. x = 1, y = 5 B. x = 2, y = 4 C. x = 1, y = 4 D. Inconsistent
Mathematics
Perform the indicated operation.900 ? 9
A. 8100 B. 8109 C. 909 D. 8091
Mathematics
Find the real solutions of the equation.2 + 
= 
A. {- 
, 
}
B. {- 
, - 
}
C. {-2, - 
}
D. {- 
, 0}
Mathematics
Solve the problem.A formula relating an athlete's vertical leap V, in inches, to hang time T, in seconds, is V= 48T2. A professional basketball player has a vertical leap of 40 inches. What is his hang time? Round your answer to the nearest tenth of a second.
A. 0.9 sec B. 1 sec C. 0.6 sec D. 0.8 sec
Mathematics