This video demonstrates the monty hall problem, named after the host of the game show "let's make a deal" that originally aired in the 1960s and 1970s. in this show, contestants picked one of three curtains, one of which had a car behind it and the other two had goats. after contestants chose a curtain, monty hall showed the contestant what was behind one of the two curtains the contestant had not chosen. then he offered the contestant the option to switch her choice.
a. 3
b. 10
c. 20
d. 40

What is the perimeter, p, of a rectangle that has a length of x + 8 and a width of y − 1? p = 2x + 2y + 18 p = 2x + 2y + 14 p = x + y − 9 p = x + y + 7

Cor d? ? me ? max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Which best explains why this triangle is or is not a right triangle ?