Simplify the expression. Write with only positive exponents. Assume that variables represent positive real numbers.x1/3x2/3
A. x
B. x2/9
C. x2/3
D. 
Answer: A
Mathematics
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Determine if the following is a function or not. f(x) = 5 for x ? W.
A. Yes B. No
Mathematics
Solve the problem.The length and width of a rectangle must have a sum of 40 feet. Find the dimensions of the rectangle whose area is as large as possible.
A. length 19 ft; width 21 ft
B. length 20 ft; width 20 ft
C. length 20 ft; width 60 ft
D. length 
ft; width 
ft
Mathematics
Solve the matrix equation for X.A = 
, B = 
, AX = B
A. 
B. 
C. 
D. 
Mathematics
Use the Gauss-Jordan method to solve the system of equations. x - y + 8z = -107 x + 2y = 212x + y + 8z = -80
A. (5, 8, -13) B. (5, 8, 7) C. (5, 8, 0) D. No solution
Mathematics