Simplify the expression. Assume all variables represent positive real numbers.
? 
A. 5
B. 10
C. 5
D. 10
Answer: C
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Write a matrix equation equivalent to the system of equations. 8w + 7x - 2y - z = -8 10x + 10y = -7-10w - 5x - y - 7z = 10 w - 8x + 10z = 10
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Add or subtract as indicated. Write the answer in lowest terms.9 - 
A. 
B. 
C. 
D. 
Write the equation in standard form of the line satisfying the given conditions.Through (-5, 0); m = -7
A. -5x + y = -7 B. 7x - y = 5 C. 5x + y = -7 D. 7x + y = -35
The probability that a person owns a luxury car is 0.2, and the probability that the owner of such a car also owns a personal computer is 0.5. Find the probability that a person, chosen at random, owns both a luxury car and a computer. ?
A. 0.5 B. 0.1 C. 0.2 D. 0.9 E. 0.6