10)

11)

12)

13) (your answer is incorrect)

14) (your answer is incorrect)

15)

16)
-expression to represent this situation
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Answer: In 1 group 57 students
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P.S. Hello from Russia :^)
Answer:
It's 5
Step-by-step explanation:
Answer:
4.9x10^4
Step-by-step explanation:
4.9*10000=49,000
5.67 (performed on a calculator)