If the complex number x = 3 + bi and |x|2 = 13, which is a possible value of b?

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.