Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are positive.(9x4y-10)9/2

A.
B.
C.
D. 19,683x18y45

Answer: A

Mathematics

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Find the first term and the common ratio of the geometric sequence.6, 8, , , . . .

A. a1 = , r = 
B. a1 = 6, r = 
C. a1 = , r = 
D. a1 = 6, r = 

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Multiply. ?

What will be an ideal response?

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Give the degree of the polynomial and identify its leading coefficient.-20x3 - 8w2 - 7w - 5y4 - 3

A. degree: 10; leading coefficient: -20 B. degree: 4; leading coefficient: -20 C. degree: 10; leading coefficient: -5 D. degree: 4; leading coefficient: -5

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Determine whether the equation represents a circle, a point, or has no graph. If the equation is that of a circle, find its center and radius


(a) point
(b) no graph

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Mathematics