If the coordinates of ab are a(-1, 4) and b(7, 2), what is the equation of the line that is the perpendicular bisector of ab?

The weights of players in a basketball league are distributed normally. the distance (d) of each player's weight (w) from the mean of 86 kilograms was computed as follows: d = |w - 86| if d is greater than 7 for approximately 5% of the players, what is the approximate standard deviation of the players' weights? a. 1.75 kilograms b. 3.5 kilograms c. 4.3 kilograms d. 7 kilograms

Which of the following expressions is equal to 2x^2+8

What is the range? can’t seem to find it out