Complete the following proof. Given: Two concentric circles with AB tangent to smaller circle R Prove: AR=RB

The measurement of one angle of a right triangle is 34°. what is the measurement of the third angle?

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 ?

X2 + y 2 = 36 x + y = 6 solve the system of equations.