Find the angle between the vectors (9,-6) and (3, 1). Carry your intermediate computations to at least 4 decimal places. Round your final answer to the nearest degree.

The weight of an object in a particular scale is 175.2 lbs. the measured weight may vary from the actual weight by at most 0.1 lbs. what is the range of actual weights of the object

Which of the following is the result of expanding

Find the distance between the point (-3,-4), and (see the picture below)