Question

Pliss soal numb 4 dan 5 aph jawabannya

Answer 1

4.a. 6:6+b
    8:12
    c:c+4
b. 6/6+b = 8/12
      18     = 12+2b
       2b    = 6
       b      = 3
c/4+c = 8/12
3c      =8+2c
c        = 8

2. AD^2=CD.DB
           =9.16
            =144
AD = akar 144 = 12

AC^2 = AD^2+CD^2 = 144 + 81 = 225
AC=15
AB^2=AD^2 + BD^2 = 144 + 256 = 400
AB=20