Box A had 400 marbles. Box B had 500 marbles. 30% of Box A’s marbles and 60% of box B’s marbles are white, and the rest are blue. 30% of box A’s marbles and 25 percent of box B’s marbles were transferred to the other box at the same time. How many more marbles were there in Box B than Box A in the end?

Which of the following is true for the relation f(x)=2x^2+1

What are the solutions of the equation? 5z^2 + 9z - 2 = 0 a. 1, -2 b. 1, 2 c. 1/5, -2 d. 1/5, 2

Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?