Simplify the expression. Use positive exponents. Assume variables represent nonzero real numbers.(-2x6y)5
A. (-2)5x30y5
B. (-2)5x11y5
C. -10x6y
D. -10x6y5
Answer: A
Mathematics
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Solve the problem.Using the numerals 0 through 9, how many 7-digit serial numbers can be made if the first digit must be 0 or 1 and no numerals may be repeated?
A. 1008 B. 8 C. 120,960 D. 40,320
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? is an acute angle and sin ? is given. Use the Pythagorean identity sin2 ? + cos2 ? = 1 to find cos ?.sin ? = 
A. 
B. 
C. 
D. 
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Find decimal notation70%
A. 0.07 B. 0.59 C. 0.7 D. 7
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Write a formula for the nth term of the arithmetic sequence. Use the formula to find the 20th term of the sequence.a = - 
, d = - 
A. an = - 
n - 
; a20 = - 
B. an = - 
n + 
; a20 = - 46
C. an = - 
n - 
; a20 = - 
D. an = - 
n - 
; a20 = - 34
Mathematics