Write the numerator and denominator of the fraction as a product of prime factors and divide by the common factors. Then write the fraction in lowest terms.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Answer: C
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A sample statistic and margin of error are given. Find the confidence interval likely to contain the population parameter of interest and answer the question.Ten years ago, according to government records, 17% of the population of Elmwood had no health insurance. This year a poll revealed that 21.0% were without insurance. The margin of error was 3.2 percentage points. Find a confidence interval for the true percentage without insurance this year. Can we conclude that the percentage without insurance has increased from ten years ago?
A. 19.4% to 22.6%; yes B. 17.8% to 24.2%; yes C. 14.6% to 21.0%; no D. 21.0% to 24.2%; yes
Compute dy/dx for the function.y = sinh2 9x
A. 18 cosh 9x B. 2 sinh 9x cosh 9x C. 2 cosh 9x D. 18 sinh 9x cosh 9x
Divide. Leave your answer in exponent form. Assume that all variables in any denominator are nonzero.
A. z15
B. 
C. z8 - z7
D. z
Solve the problem. Round to the nearest cent.The total price (including sales tax) of a microwave is $427.77. The sales tax rate is 3%. What is the purchase price of the microwave (the price before taxes are added)?
A. $411.32 B. $415.31 C. $329.05 D. $419.38