Use algebraic and/or graphical methods to solve the inequality.
> 0
A. x < - 2
B. x > 0
C. x > - 2
D. x < - 
Answer: C
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Determine which numbers in the set are rational numbers.
-8.3535..., -14, 
, 
, 
, 6.020020002..., 
A. -8.3535..., -14, 
, 
B. -8.3535..., -14, 
, 6.020020002...
C. -8.3535..., -14, 
, 
D. -14, 
, 
, 
E. -8.3535..., -14, 
, 6.020020002..., 
In order to determine the effectiveness of a new vaccine that is alleged to cure "math anxiety," a study was conducted. One thousand volunteer college students enrolled in math courses across the U.S. were chosen. The 1000 students were broken up into two groups. Those enrolled in calculus courses were given the real vaccine. The students in developmental (remedial) math courses were given a fake vaccine consisting of sugared water. None of the students knew whether they were being given the real or the fake vaccine, but the researcher conducting the study knew. At the end of the semester the students were given a test that measured their level of math anxiety. The students in the treatment group showed significantly lower levels of math anxiety than those in the control group. On the
basis of this experiment the vaccine was advertised as being highly effective in fighting math anxiety.This study can best be described as a A. double-blind controlled placebo experiment. B. double-blind randomized controlled experiment. C. blind randomized controlled experiment. D. blind controlled placebo experiment. E. none of these
Use a calculator to find the approximate value of the composition. Round your answer to four decimal places. The expression may be undefined.cos (cos-1 (-0.9372))
A. -0.4686 B. 0.9372 C. 0.4686 D. -0.9372
Find the measure of the dihedral angle indicated.The figure shown is a right prism whose bases are regular triangles. Find the measure of the dihedral angle between each lateral face and a base.
A. 45° B. 60° C. 90° D. 120°