Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find the sum ? + ? or the difference ? - ? as indicated.Find ? - ?.? = 90°, ? = 43°32'
A. 46°32' B. 46°28' C. 47°28' D. 47°32'
Mathematics
Answer the question.True or False: The graph of the equation y = 9 goes through the origin.
A. False B. True
Mathematics
Find the value of the expression.log2222
A. 1 B. 10 C. 0 D. 22
Mathematics
Find the vertex, the focus, and the directrix of the parabola.x2 + 2x - 8y - 39 = 0
A. Vertex: 
; Focus: (-1, -7); Directrix: y = -3
B. Vertex: 
; Focus: (-1, 3); Directrix: y = 13
C. Vertex: 
; Focus: (-1, -3); Directrix: y = -7
D. Vertex: 
; Focus: (-1, 3); Directrix: y = - 
Mathematics