Let A and B be sets with cardinal numbers n(A)=a and n(B)=b, respectively decide whether the statement is true or false n(AuB)+n(AnB)=n(A)+n(B)

Jessica and martha each have a bag of cookies with unequal quantities. they have 30 cookies total between the two of them. each of them ate 6 cookies from their bag. the product of the number of cookies left in each bag is not more than 80. how many more cookies will jessica have martha? if x represents the number of cookies jessica started with, complete the statements below.the inequality that describes the relationship between the number of cookies each one of them has is x^2 - x +224 > = 0.jessica has at least cookies more than martha.

What is the missing step in this proof ?

Gh bisects fgi. find the measure of hgi •15° •21° •10° •8°