Solve the problem.The length of a rectangle is x2 - 3x + 2 and its width is x - 3. Find its dimensions assuming that its area is 210 square units.
A. Length: 210; width: 8
B. Length: 5; width: 5
C. Length: 69; width: 11
D. Length: 210; width: 5
Answer: D
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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
Find an equation for the line, in the indicated form, with the given properties. Containing the points (2, -3) and (-8, 4); slope-intercept form
A. y = mx - 
B. y + 3 = - 
(x - 2)
C. y = 
x - 
D. y = - 
x - 
Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. x - 2y + 3z = 114x + y - z = 42x - y + 3z = 10
A. (2, 3, 5) B. (-2, -3, 3) C. (2, -3, 1) D. No solution
Provide an appropriate response.What are the advantages and disadvantages of factoring as a method of solving quadratic equations?
What will be an ideal response?