A line is perpendicular to another line if m
=
, where
is the slope of the original line and m, is the slope of
the perpendicular line. Which of the following equations represents the line that passes through the point (1, -1) and
is perpendicular to the line below?

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Opposite angles in a parrellelogram are

What is the perimeter of an equilateral triangle if each side is (x+3)?