There are 4 red marble, 2 blue marbles, 3 green marbles, and 10 yellow marbles. what is the the probability of drawing a blue or a red marble? (enter as a decimal rounded to 4 places)

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Ze trinomial x2 + bx – c has factors of (x + m)(x – n), where m, n, and b are positive. what is ze relationship between the values of m and n? explain how you got ze answer

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18 }, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.