What is the measure of angle OAC if major arc AB measures 220 degrees?

55°

70°

110°

140°

I already know the answer is 55 but I need to know why and how to get 55?

Graph the equation by plotting point x=2

Witch represents the inverse of the function f(x)=1/4x-12

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no