Round 38.872601 to the nearest hundredths place.

Ineed i been stuck on this question since yesterday

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?

What additional information could be used to prove abc =mqr using sas? check all that apply.