Simplify the expression: -21 - (38)

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

How do you use the elimination method for this question? explain, because i really want to understand!

What is the circumference of the pie