1 soal pilihan ganda, nyasal report

By Admin ReiPosted on October 29, 2022

1 soal pilihan ganda, nyasal report

$(4x-25)°+90°+(x+15)°=180°\(5x+80)°=180°\5x=180-80\5x=100\x=20°\text{Subtitusi x=20 ke }(4x-25)°\(4(20)-25)=80-25=55°$

Jadi jawabannya B.55°