Solve the problem.A fire truck is en route to an address that is 6 blocks east and 11 blocks south of the fire station. Using the fire station as the pole and the east direction as the polar axis, express the fire truck's destination in polar coordinates. Round the coordinates to the nearest hundredth. Express ? in degrees.
A. (4.12, -28.61°)
B. (12.53, -61.39°)
C. (4.12, -61.39°)
D. (12.53, -28.61°)
Answer: B
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Solve the problem.Find the slope of a line tangent to the curve of 
where 
A. 0.043 B. 1.658 C. 0.753 D. 0.377
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 can best be described as a
A. survey using stratified sampling. B. randomized controlled experiment. C. census. D. survey using quota sampling. E. survey using simple random sampling.
Solve the equation.x + 4.93 = -3.14
A. -15.480 B. 8.07 C. -8.07 D. 1.79
Solve the problem.The Fahrenheit temperature, F, in Siber City in October ranges from 
Write an absolute value inequality whose solution is this range.
A. 
< 71
B. 
< 14
C. 
< 57
D. 
> 43