Given a circle in the complex plane with a diameter that has endpoints at: -12-i and 18 + 15i
Find the radius of the circle

Will give brainliest series to sigma notation write the following series in sigma notation. 6+10+14+18+22+26+30 example image shown below.

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.