-10x-5=-125
find what x is

Do 12/14 and 8/10 have the same value? explain your answer.

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Clarence wants to buy a new car. he finds an ad for a car that costs 27,200 dollars. suppose his local sales tax is 7%. -how much would he have to pay? -what is the cost of the car including tax? -if clarence has 29,864 saved, can he pay cash to buy the car?