13 out of 60 people surveyed were left handed calculate the angle you would use in a pie chart

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

Find the length of the diagonal of the rectangle. round your answer to the nearest tenth. || | | 8 m | | | | 11 m

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.