Answer: B
Step by Step explanation:
Answer:
Step-by-step explanation:
Using Pythagoras theorem,
AC^2 = AB^2 + BC^2
AC^2 = 4^2 + 15^2
AC^2 = 16 + 225
AC^2 = 241
AC = √241
x would be 6 because you double 5 to get ten, so you double 3 to get 6