The ratio of green to yellow beads is 4:5, and there are initially 27
beads. I add some yellow beads
and the ratio is now 1:3. How
many yellow beads did I add?

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

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?

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)