Y-2x=4 solve the equation for the variable y. what is y?

What value of x will make the triangles similar by the sss similarity theorem?

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

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?