Make x the subject of the formula y = x + a

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny