Evaluate the factorial expression.
A. 0
B. 21
C. 1
D. 7
Answer: B
Mathematics
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Find the LCD for the given fractions.
and 
A. 4 B. 56 C. 180 D. 720
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Solve the quadratic equation using the quadratic formula.x2 + x + 5 = 0
A. 
B. 
C. 
D. 
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Find the common difference d and the nth term an of the arithmetic sequence with the specified terms. 4th term is 16; 6th term is 32
A. d = 0; an = 0n + 8 B. d = 8; an = 8n - 16 C. d = 8; an = 8n + 16 D. d = 8; an = 8n - 8
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Divide. Express the quotient in lowest terms.
÷ 
A. 3
B. - 3
C. - 
D. - 
Mathematics