Evaluate the expression for the given replacement values.
for x = -29, y = 0
A. 0
B. 29
C. -29
D. undefined
Answer: D
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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.This study is
A. not an experiment. B. double-blind. C. blind, but not double-blind. D. not blind. E. none of these
Find the measure of the indicated angle. Figure is not drawn to scale.If m and n are parallel, find the measure of ?x.
A. 36° B. 43° C. 47° D. 54°
Find the exact value of the expression.csc 
A. undefined B. 0 C. -1 D. 1
Solve.In an electrical circuit, let V represent the electromagnetic force in volts at t seconds. Assume 
. Find the smallest positive value of t where 
for 
.
A. 
sec
B. 
sec
C. 
sec
D. 0 sec