Perform the indicated operations. Write the result using only positive exponents. Assume all variables represent nonzero real numbers.(5x-5)3(x3)-3
A. 
B. 53x135
C. 
D. 
Answer: A
Mathematics
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Solve.
= 6
A. 36 B. 35 C. 49 D. 37
Mathematics
Rationalize the denominator. Assume variables represent non-negative values.
A. 
B. 
C. 
D. 
Mathematics
Use Gaussian elimination and matrices to solve the system of linear equations. Write your final augmented matrix in triangular form and then solve for each variable using back substitution. 6x - y - 6z=-21 -4x + 7z= 30 2y + z= 12
A. (-3, 6, 3) B. (3, 6, 3) C. (-3, 3, 6) D. (3, 3, 6)
Mathematics
Solve the problem.A boat can go 90 mph in still water. It takes as long to go 630 miles upstream as it does to go downstream 720 miles. How fast is the current?
A. 9 mph B. 6 mph C. 1 mph D. 5 mph
Mathematics