Alex, Brandi, and Carson are working on math. Alex completed the homework in 20 minutes, Brandi completed the homework in 40 minutes, and Carson completed the homework in 10 minutes. If they all worked together, how long would it take them to complete it?

Solve the equation w^3 = 1,000 i honestly dont know how to punch this into a calculator pls

Solve 3x-18=2y and 5x-6y=6 by elimination show work

Someone answer asap for ! 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.