which of these four equations are equivalent? 1.x^3+27 2.(x+3)(x^2+3x+9) 3.(x-3)(x^2+3x+9) 4.(x+3)(x^2-3x+9). Is it A. l,ll B. l,lll C. l,lV D. lll, lV​

Classify the following triangle check all that apply

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.

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.