Arum takes 12 minutes to solve a set of 75 subtraction problems at a constant rate How much time did he take to solve 50 subtraction problems?

Solutions for 2x+7 less than or equal to 3x-5

We just started the introduction into circles and i have no idea how to do this.

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.