What is sqrt 12x^8/sqrt 3x^2

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Identify the polynomial. a2b - cd3 a.monomial b.binomial c.trinomial d.four-term polynomial e.five-term polynomial