How many cubes with side lengths of 1/2 cm does take it to fill the pirsm

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

What is the upper quartile in the box plot?

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