Question

Ada yang tau no 20-21 ga???pakai cara ya .
tlg bantuan ya .malam in di kumpulin

Answer 1

20. Cari AD.
AD^2 = 17^2 - 15^2
AD^2 = 289 - 225 = 64
AD = 8

Lalu cari AB
AB^2 = 8^2 + 6^2
AB^2 = 100
AB = 10

AB = 2x - 8
10 = 2x - 8
2x = 18
x = 9