The width of a rectangle is 15 cm and the perimeter is 72 cm. Find the length.

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

How is this equation completed? i cannot find any examples in the book.

If f(x)=1/x and g(x)=x+4 which of the following is the graph