Can someone me with this page and i’m not sure if i got number 4 right ‼️

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?

How can i differentiate this equation?