Find m. DCR if m. RCB= 115°
and m_ DCB = 169º.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Factor the polynomial expression x6 – x3 – 20

For the right triangle shown, the lengths of two sides are given. find the third side. leave your answer in simplified, radical form.