Headphones can be purchased in one of four colors: white, black, silver, or red. The number of headphones purchased in each color is shown below. White: 475 Black: 355 Silver: 150 Red: 220 Based on this information, what is the probability that the next headphones purchased will be silver?

What is the expression in factored form? -20x^2 - 12x a. 4x(5x+3) b. -4x(5x-3) c. -4(5x+3) d. -4x(5x+3)

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1

Which of the following would be a correct step in proving that triangle abc is congruent to triangle cda? a. use a protractor to measure the angles and show that all the corresponding angles are equal in measure. this will allow you to prove congruence by aaa. b. show that segment ab is parallel to segment cd and segment ad is parallel to segment cb. this will allow you to prove congruency by asa. c. show that is segment ab is perpendicular to segment ad. this will allow you to prove congruence by sas. d. none of the above.