Line a passes through (-2,1) and (0,3) Line b passes through (4,1) and (6,4)
Line c passes through (1,3) and (4,1)
Which of the lines if any are perpendicular?

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

The number of nails of a given length is normally distributed with a mean length of 5.00 in, and a standard deviation of 0.03 in. find the number of nails in a bag of 120 that are less than 4.94 in. long.

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8