Have anyone felt really sad after you girl broke up with you for no reason

what 4+4

1. what are the missing reasons in the proof 2. it's in the second picture and 3

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?

2/3(-6y+9x) expand each expression using the distributive property