Determine the general solution for sin(x-30°)=cos2x​

Find two consexutive odd integers such that the sum of their square is 650

Do one of the following, as appropriate: (a) find the critical value z subscript alpha divided by 2 , (b) find the critical value t subscript alpha divided by 2 . 99%; nequals 17; sigma is unknown; population appears to be normally distributed.

Perform the indicated operation. y^2 + 3y - 10 / 3y + 15