the mean of 4 numbers is 6 and the mean of other 3 numbers is 20. find the mean of the seven numbers.​

Assume that 1400 births are randomly selected and 1378 of the births are girls. use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high. choose the correct answer below. a. the number of girls is neither significantly low nor significantly high. b. the number of girls is significantly high. c. the number of girls is significantly low. d. it is impossible to make a judgment with the given information.

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

In a column proof the right column states your reasons