Please help. Pythagorean theorem

If ac = 12 and ab=7 is it possible that bc =10

Name the quadrilaterals that have four equal sides.

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 ?