Solve the system. 5x - 4y + 10z = 210x + 2y - 15z = 1815x - 2y + 10z = -1
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Use the rules of exponents to simplify. Write the answer with positive exponents. Assume that all variables represent positive values.(x2/3)2/7
A. x20/21 B. x2/3 ? x2/7 C. x4/21 D. x4/7
Mathematics
Calculate the requested distance.The distance from the point S(9, 5, 9) to the plane 4x + 3y = 8
A. 
B. 
C. 
D. 
Mathematics
Rationalize the denominator.
A. 5
B. 5
C. 
D. 
Mathematics
Find the integral.
A. 
cot 5x + C
B. - 45 cot 5x + C
C. - 
cot 5x + C
D. - 
tan 5x + C
Mathematics