Write the expression with only positive exponents. Assume all variables represent nonzero numbers. Simplify if necessary.3x-3
A. 
B. -9x
C. 
D. 
Answer: C
Mathematics
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Write the Egyptian numeral as a Hindu-Arabic numeral.
A. 3670 B. 3067 C. 367 D. 3607
Mathematics
Find the standard deviation s 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(s).0.438?0.171?0.442?0.135?0.467?0.477?0.624
A. 0.135 B. 0.1762 C. 1.0835 D. 1.2697
Mathematics
Solve the problem.What is the coefficient of x7y6 in the expansion of (x + y)13?
A. 8,648,640 B. 1,235,520 C. 7 D. 1716
Mathematics
Decide whether or not the functions are inverses of each other.f(x) = (x - 2)2, x ? 2; g(x) = 
+ 2
A. No B. Yes
Mathematics