10 2⁄3 yards = how many feet

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

Askateboard ramp is in the shape of a right triangle what is the height of the ramp