Asegment has endpoints at (15,−11) and (42,−11). how many units long is the segment?

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

This is my question~~ ( r ^ 4 - 2r ^ 3 - 23 r ^ 2 - 4r - 32)÷(r+4) ~~ i must use long division to solve it : / i was wondering if anyone world like to solve it. and if so, share step-by-step explanations! you! ❤

What is the absolute value of the complex number -4- 2 v14 3.15 14 18