Simplify the expression. Write the answer with only positive exponents. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. xy1/3
Answer: C
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Find the greatest common factor of the monomials.-6xy, 16x2, -20xy2, and 8y2
A. 2x B. 2xy C. 4 D. 2
Solve the problem.Find the perimeter of the polygon with the following vertices. Round to the nearest hundredth. A(1, 1), B(2, 5), C(5, 4), D(4, 2), E(3, 2)
A. 10.52 B. 12.76 C. 11.52 D. 14.64
Identify the type of sampling described by the proposal.Based on 9,000 responses from 30,000 questionnaires sent to all its members, a major medical association estimated that the annual salary of its members was $126,500 per year.
A. convenience sample B. cluster sample C. simple random sample D. stratified sample E. systematic sample
Find an equation for the line that passes through the given point and satisfies the given conditions.P = (9, 7); parallel to v = 2i + 5j
A. 2x + 5y = 53
B. 5x - 2y = 31
C. 2x + 5y = 29
D. y - 7 = 
(x - 2)