Help me pls! I need A, B, and C!

What can be said about the relationship between triangles and circles? check all that apply. a) many circles can be inscribed in a given triangle b) exactly one triangle can be inscribed in a given circle c) exactly one circle can be inscribed in a given triangle d) many triangular shapes can be circumscribed about a given circle

Pick the description of a geometric object that best matches the real world object box for a deck of card

A+b= 17, ab=70, find the value of |a-b|