If the measure of abc = 180, and the length of ad and dc are equal, which is the measure of acd? a) 30 b) 45 c) 90 d) 180 image:

Ok lets see the answer is 90 bro i hope this helps you best wishes for yo grades:)

C)90 is the answer because think of it like this you would not be able to do 45,30 or 180 it will not be all equal but 90 it will be the closest to 180 . 

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*