Respuesta :

Answer:

because measure A and B are supplemantery ,since the measure of $m(A°)+m(B°)=180°$ , then 6z-48+4z+38=180° → 10z=190 → z=19 , therefore

m(B°)=4(19)+38 → m(B°)=114 ,and m(A°)=6(19)-48=66°