Use any geometry skill you have learned to identify any pairs of angles in these figures that are complementary or supplementary

pls help

Find the nonpermissible replacement for binthis expression.b2/5b +5

An arithmetic series a consists of consecutive integers that are multiples of 4 what is the sum of the first 9 terms of this sequence if the first term is 0

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?