Which of these is always true? A. Two lines that are the always same distance apart are perpendicular.

B. Two lines that are always the same distance apart are parallel.

C. Two lines that share common end point are always perpendicular.

D. Two lines that share common end point are always parallel.

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

If f(x)=1/x and g(x)=x+4 which of the following is the graph