Provide an appropriate response.Before fractions may be added or subtracted, they must all have the same:
A. denominator
B. dividend
C. numerator
D. divisor
Answer: A
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Evaluate the integral by changing the order of integration in an appropriate way.
A. 7 ln 2 ln cos 5 B. - 7 ln 4 ln cos 5 C. 7 ln 4 ln cos 5 D. - 7 ln 2 ln cos 5
A tamoxifen study claims that a combination of chemotherapy and the hormone therapy tamoxifen is more effective than tamoxifen alone in preventing breast cancer. In the study, a group of researchers from the U.S. and Canada studied 1477 postmenopausal women with early-stage breast cancer. The women were randomly assigned to one of three study groups. Group A (361 patients) received tamoxifen alone on a daily basis for five years. Group B (566 patients) received chemotherapy and tamoxifen for six months, and then completed five years of tamoxifen treatment. Group C (550 patients) received chemotherapy alone for six months followed by five years of tamoxifen treatment. All 1477 patients knew which treatment they were receiving.Which of the following is the most likely confounding
variable in this study? A. Only 1477 women were involved in the study. B. The three groups in the study were of different sizes. C. The doctors running the study were only from the U.S. and Canada. D. Only postmenopausal women were in the study. E. Only women were in the study.
Write the set as indicated.Write {2, 4, 6, 8} using set-builder notation.
A. {x?x is any even natural number} B. {2, 4, 6, 8} C. {x?x is any natural number} D. {x?x is an even natural number less than 10}
Round the number to the place value indicated.9
,137
A. 102,000 B. 92,000 C. 92,100 D. 93,000