The grand canyon is approximately 29 kilometers long. mariner valley is a canyon on mars that is approximately 212 kilometers long. about how many times longer is mariner valley than the grand canyon?

2
23
221
2108

question 5(multiple choice worth 4 points)

simplify 32 ⋅ 35.

37
310
97
910

Need now 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.

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?