Here is a rectangle Explain why the area of the large rectangle is 2a + 3a + 4a 2. Explain why the area of the large rectangle is (2 + 3 + 4) a.​

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.