Answer:
1st is correct
Step-by-step explanation:
Like charges repel each other.
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Perimeter is sum of all the sides ,
so, perimeter will be 7 + 9 + x = 16 + x
it will be more than 16 for sure
I think the question is 1/6 ÷ 1/6, which im pretty sure would be 1/3
Answer:
(b^2 + 8b - 9) - (11b^2 + 4b -7)
b^2 + 8b - 9 - 11b^2 - 4b + 7
- 10b^2 + 12b -16
Step-by-step explanation: