Abrand new car travels about 50 miles on 2 gallons of gas, how can this travel on 9 gallons of gas

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x

Suppose medical records indicate that the length of newborn babies (in inches) is normally distributed with a mean of 20 and a standard deviation of 2.6. find the probability that a given infant is between 14.8 and 25.2 inches long.