Use the rule for exponents to simplify the following expression.
A. 
B. 
C. 
D. 
E. 
Answer: E
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Solve the problem.In an electric instrument called a "Wheatstone bridge", electric resistances are related by 
Find R2 if 
and 
If necessary, round to two decimal places.
A. 34 ? B. 3.4 ? C. 0.03 ? D. 2.94 ?
Replace the polar equation with an equivalent Cartesian equation.r2 = 30r cos ? - 6r sin ? - 9
A. (x - 15)2 + (y + 3)2 = 225 B. (x - 15)2 + (y + 3)2 = 9 C. 30x - 6y = 9 D. (x + 30)2 + (y - 6)2 = 9
Answer the question.An average newspaper contains at least 16 pages and at most 87 pages. How many newspapers must be collected to be certain that at least two newspapers have the same number of pages?
A. 73 newspapers B. 70 newspapers C. 71 newspapers D. 72 newspapers
Subtract. Combine like terms, and write the answer in descending order.(-4c2 - 5c - 3) - (4c2 + 5c + 7)
A. -8c2 + 4 B. -8c2 + 10c + 10 C. 4 D. -8c2 - 10c - 10