What is the constant of proportionality in the equation y
=
5
9
x
y=
9
5
​
xy, equals, start fraction, 5, divided by, 9, end fraction, x?

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.

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?

Sheila and her study partner flipped a coin 120 times. they flipped 70 heads and 50 tails. what is the experimental probability that the next flip will be heads up?