Answer: Line R and Line P are perpendicular because they intersect at a point and create a pair of equal angles.
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Answer:
I would use cubic meters :)
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Answer:
84 + x*1 = 8x
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Xavier needs to sell 12 painting to break even.
6 x n or 6n, I'm pretty sure.
Answer:
I agree with the statement.
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As long as both numbers are being multiplied by the same quantity, you will always end up with the same number.