3) 420 meters of fencing is needed to enclose a rectangular field. If one side is 90 meters more than the other, find the dimensions (length and width) of the field.

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