Define parallel lines. a) lines in the same plane that intersect. b) lines in the same plane that never intersect. c) lines in the same plane that intersect to form a 90° angle. d) lines in the same plane that intersect to form a 180° angle.

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

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