N(2n+6)-(n²-1)= 2n²+6n-n²+1=n²+6n+1
Answer:
they are vertical angles
Step-by-step explanation:
just learned about this
Answer:

Step-by-step explanation:

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Answer:
3.5/4 bags of oranges
Step-by-step explanation:
1 3/4 on Monday (1 3/4= 7/4) and half 7/4 is 3.5/4 so on tuesday it was 3.5/4 bags of oranges