Perform the indicated operations and simplify the result. Leave the answer in factored form.
÷ 
A. 
B. 
C. (x - 4)(x + 5)
D. 
Answer: A
Mathematics
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Solve the congruence.7x ? 8 (mod 9)
A. 6 B. 8 C. 3 D. 5
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Find the domain of the rational expression.
A. {x|x is a real number and x ? 1 and x ? 2} B. {x|x is a real number and x ? 1} C. {x|x is a real number} D. {x|x is a real number and x ? 2}
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Write the fraction or mixed number as a decimal. If necessary, round to the nearest thousandth.5
A. 5.714 B. 5.071 C. 6.4 D. 3.571
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Calculate the arc length of the indicated portion of the curve r(t).r(t) = 2t4i + 11t4j + 10t4k, 1 ? t ? 3
A. 300 B. 1,200 C. 4,500 D. 18,000
Mathematics