Can anyone help me please?

Answer:
x ≈ 8.5 cm
Step-by-step explanation:
Law of Sines
a/sinA = b/sinB
---------------------------
x/sin89 = 8/sin70
multiply both sides by sin89
x = 8/sin70 * sin89
Breakout the calculator
x = 8.512125544373626
x ≈ 8.5 cm