Vector a has a magnitude of 24 units and points in the positive y-direction. when vector b is added to a, the resultant vector a + b points in the negative y-direction with a magnitude of 15 units. find the magnitude and direction of b.

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

Which of the following parabolas opens up?