Simplify the expression, leaving your answer with only positive exponents. Assume that all variables represent positive numbers.x-2/5 ? x3/5
A. x1/5
B. x5/6
C. x-1/5
D. x6/5
Answer: A
Mathematics
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Solve.Simplify: 
.
A. 8k7q8
B. 8k3q4
C. 8k3q4
D. 8k2q4
Mathematics
Combine. Assume that all variables represent non-negative real numbers.2
+ 3
A. 6
B. 5
C. 2
+ 3
D. 5
Mathematics
Solve the problem.Suppose that y = 
can be used to calculate the number of years y for x percent of a population of 
sparrows to die. Approximate the percentage (to the nearest whole per cent) of 
sparrows that died after 3 years.
A. 97% B. 87% C. 89% D. 85%
Mathematics
Determine the place value of the digit 3 in the whole number.1392
A. thousands B. tens C. ones D. hundreds
Mathematics