Un alumno del bachillerato distribuye su tiempo durante un día de la manera siguiente: en aseo 1/10, para comida 1/15, para estudio 2/5 horas, para diversión 4.4 y para dormir el resto del día ¿cuánto tiempo durmió?

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

Find the cosine function that is represented in the graph.

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.