In the figure, we can consider that the base is the side that mesures 12 in and that the height is the side that measures 15 in, since that sides are perpendicular. So, we just need to use the given formula:
Hence, the area of the triangle is 90 in² (B).
Answer:
Apply the formula for sum of cubes:
Therefore:
Answer: (c)
The vector in the graph (c) has a magnitude of about
and the angle slightly less than 45 degrees from the x-axis as can be judged from the fact that it crosses the first box just below the point (-2,-2). This is the main distinction between (c) and (a) which is also similar in magnitude, however has an angle that is just larger than 45 degrees.