There are 3 people in johns family. the range of their shoe sizes is 4.
two people in the family wear shoe size 6.
johns shoe size is not 6 and it is not 10.
what is johns shoe size?

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

If the diagram polygon abcd is a reflection across ef to make polygon a'b'c'd'.