Para preparar una pintura de determinado color se mezcla 1/2 litro de pintura blanca con 3/4 de pintura azul A se quiere hacer una mezcla con la misma tonalidad pero usando 8 litros de pintura blanca ¿cuantos litros de pintura azul se necesitan?
B si se usan 5 litros de pintura azul, ¿cuantos litros de pintura blanca se necesitan para mantener la tonalidad?​

Exclude leap years from the following calculations. (a) compute the probability that a randomly selected person does not have a birthday on october 4. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability that a randomly selected person does not have a birthday on the 1st day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability that a randomly selected person does not have a birthday on the 30th day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (d) compute the probability that a randomly selected person was not born in january. (type an integer or a decimal rounded to three decimal places as needed.)