Use the numbers 0 - 9 in the blanks to make the equations true

What is the value of the expression "two less than six times the diffrence of a number and five" when n = 9?

Acylinder has volume 45π and radius 3. what is it’s height?

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