Matematika

Pertanyaan

Tolong jawab pake caranya yaaa.....cepat jwb sekarang yaa
Tolong jawab pake caranya yaaa.....cepat jwb sekarang yaa

1 Jawaban

  • a. 
    AD = BC
    2x+5 = x+7
    2x-x = 7-5
    x = 2

    b. 
    AD = 2x+5 = 2.2 + 5 = 9

    c. 
    BAD = BCD = 60
    ABC = 180-BCD = 180-60 = 120