Hộp I có 10 sản phẩm tốt, 2 hỏng, hộp II có 20 sản phẩm tốt, 4 hỏng. Từ hộp I lấy ra 1 sản phẩm bỏ qua hộp II, sau đó từ hộp II lấy ra 1 sản phẩm. a) Tính xác xuất từ hộp II là hỏng
b) Nếu sản phẩm từ hộp II là hỏng, tính xác xuất sản phẩm từ hộp I là tốt

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?