Bis the midpoint of ac. ac =4x - 2 and ab =7. what is x, b. c. and ac?

Which of these choices show a pair of equivalent expressions?

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Find the nonpermissible replacement for binthis expression.b2/5b +5