Find the distance from the origin to the graph of 4x-y+8=0

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

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