What is the value of f(x)=3x-12forx=9?

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

The length of the line segment joining the midpoints of sides ab and bc of the parallelogram abcd is 10. find the length of diagnol ac

Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b.false