Question

Tolong jawab yh kak pake cara​

Answer 1

19)

3/6 = x/10

x = 3×10 : 6

x = 5 C

20)

EF = [(CD×AE)+(AB×DE)] : (DE+AE)

9,8 = [(8×7) + (AB×3)] : (3+7)

9,8 = (56 + 3AB) : 10

9,8 × 10 = 56 + 3AB

98 = 56 + 3AB

3AB = 98 - 56

3AB = 42

AB = 42 : 3

AB = 14 cm