Simplify.
A. 1
B. 5
C. 25
D. -5
Answer: B
Mathematics
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Find the standard deviation for the given data. Round your answer to one more decimal place than the original data.The manager of an electrical supply store measured the diameters of the rolls of wire in the inventory. The diameters of the rolls (in m) are listed below. Compute the standard deviation.0.589?0.53?0.473?0.628?0.411?0.151?0.202
A. 0.1855 m B. 0.628 m C. 1.2720 m D. 1.4785 m
Mathematics
Convert to percent.2
A. 0.2% B. 20% C. 0.02% D. 200%
Mathematics
Factor the perfect square.25x2 + 90x + 81
A. (5x - 10)2 B. (5x + 9)2 C. (5x - 9)2 D. (5x + 9)(5x - 9)
Mathematics
Write the expression with positive exponents. Then simplify if possible.3-4
A. 
B. -81
C. 
D. 81
Mathematics