Shelly bought a 2-ounce tube of blue paint. she used 2/3 ounce to paint the water,3/5 once to paint the sky and some to paint a flag. after that she has 2/15 ounce left. how much paint did shelby used to paint her flag? (pls answer)

Imagine that x (ounce) is the amount of paint used to paint the flag

Base on the information, we know that:

2/3 + 3/5 + 2/15 + x = 2

                             x = 2 - 2/3 - 3/5 - 2/15

                             x = 30/15 - 10/15 - 9/15 - 2/15

                             x = 9/15 = 0.6 (ounce)

So the amount of paint used to paint the flag is 0.6 ounce.

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)