The Grade 8 class at Wheatly Middle School sold 77 boxes of almond chocolates.
This is 22% of all the boxes of chocolates sold.
a) Estimate the total number of boxes sold.
b) Calculate how many boxes were sold.

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

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.

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.