The number line shows the distance between numbered points on the line Which number is the same distance from 0 on the number line as 4

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

The graph of y = ax^2 + bx + c is a parabola that opens up and has a vertex at (0, 5). what is the solution set of the related equation 0 = ax%2 + bx + c?

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels