9 - 2(7 - 8)
9 - 2(-1)
9 - (-2)
11
The length of DE is 39 and the length of EF is 36 because we can see from side AC and DF that triangle DEF is just triangle ABC dilated by 3.
Answer:
writing the steps of a solution in small pieces of code
Step-by-step explanation:
edg 2020