Please help their rest of the questions: how to multiply the both sides of the lowest common multiple of C, D, and the rest of the questions for question number 3. And question number 4 (Equation with 2 or more unknown numbers: Use the cross multiplication to find a in each equation. 10 points if you guys answer quickly! :)

Ineed how factor it by finding the gcf

6(2x+y)+2(x+4y) how can i solve this

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.