Tan^5 x = (sec^4 x - 2sec ^2 x +1 ) tan x

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Identify the number 127 as a rational or irrational. explain

Which statements are true about additional information for proving that the triangles are congruent check all that apply