Factor x^2 - 16
a. (x + 4) (x - 4)
b. cannot be factored
c. (x + 4)^2
d. (x - 4)^2

If you answer right ill give brainliest, : )

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.