8. A box contains 10 black balls and 15 white balls. One ball at a time is drawn at random, its color is noted, and the ball is then replaced in the box for the next draw. a) Find the probability that the first white ball is drawn on the third draw. b) Find the probability that the second and third white balls are drawn on the fifth and eighth draws, respectively

Explanation is in the file

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hey! so 1 (25) out of 4 (100) is 25 so your answer is 25%. it's like quarters!

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15