For the following system, use the second equation to make a substitution for y in the first equation. 2x + y = 5 y + 3 = 2x a) 2x + 2x - 3 = 5 b) 2x + 3 - 2x = 5 c) 2x + 2x + 3 = 5

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?

Mama mia restaurant used 1 2 2 1 ? of their mozzarella cheese making pizza and the remaining 6 4 64 ounces making pasta. how many pounds of mozzarella cheese did mama mia start with?

What is the solution to the division problem below x3+x2-11x+4/x+4