Answer:
13 units
Step-by-step explanation:
Distance formula: 
Simply plug in your variables




d = 13
Answer:
its number 6
Step-by-step explanation:
10)

11)

12)

13) (your answer is incorrect)

14) (your answer is incorrect)

15)

16)
-expression to represent this situation

Answer: In 1 group 57 students
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P.S. Hello from Russia :^)