If the isosceles triangle abc has 130 angle at vertex b, which statement must be true

You have to put the statements up there?

astronomers is your final answer! : )

step-by-step explanation:

the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.