Solve the system of equations. \begin{aligned} &-9y+4x - 20=0 &-7y+16x-80=0 \end{aligned} −9y+4x−20=0 −7y+16x−80=0

The angles below are supplementary. what is the value of x? a pair of supplementary angles is shown. one angle measures 7x + 33, and the other angle measures 70. 5.3 8.14 11 14.7

Suppose that an airline uses a seat width of 16.516.5 in. assume men have hip breadths that are normally distributed with a mean of 14.414.4 in. and a standard deviation of 0.90.9 in. complete parts (a) through (c) below. (a) find the probability that if an individual man is randomly selected, his hip breadth will be greater than 16.516.5 in. the probability is nothing. (round to four decimal places as needed.)

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?