Solve the equation in the real number system.x4 - 12x2 - 64 = 0
A. {-4, -2, 2, 4}
B. {-4, 4}
C. {-2, 2}
D. {-8, 8}
Answer: B
Mathematics
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What is the probability of arriving at a traffic light when it is red if the red signal is flashed for 15 sec, the yellow signal for 5 sec, and the green signal for 55 sec? ?
A. The probability is 0.10 B. The probability is 0.20 C. The probability is 0.40 D. The probability is 0.30
Mathematics
Add and simplify the answer: 
+ 
.
A. 
B. 
C. 
D. 
Mathematics
Decide whether or not the functions are inverses of each other.f(x) = 3x + 9, g(x) = 
x - 3
A. Yes B. No
Mathematics
Perform the conversion.6.5 kL = ___ mL
A. 6500 B. 6,500,000 C. 65 D. 650,000
Mathematics