Write the statement as an equivalent statement that does not use the if . . . then connective. Remember that p ? q is equivalent to ~p ? q.If your jacket needs cleaning, you drop it off this afternoon.
A. Your jacket does not need cleaning and you do not drop it off this afternoon.
B. Your jacket does not need cleaning or you do not drop it off this afternoon.
C. Your jacket does not need cleaning or you drop it off this afternoon.
D. Your jacket needs cleaning and you do not drop it off this afternoon.
Answer: C
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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
Solve the problem.There is a 3-degree drop in temperature for every thousand feet that an airplane climbs into the sky. If the temperature on the ground is 37 degrees, what will be the temperature when the plane reaches an altitude of 20,000 feet?
A. 23 degrees
B. 
degrees
C. 
degrees
D. 17 degrees
Find the indicated intercept(s) of the graph of the function.x-intercepts of f(x) = 
A. (-8, 0)
B. (
, 0), (-
, 0)
C. (7, 0)
D. none
Divide and simplify.
A. 
B. p-6
C. p6
D. p-2