Which point on the number line represents V20?

help please

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

What is the slope of a line that is perpendicular to y = 3x + 1

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle