How many calcium ions are in 0.5 mol of cacl2?

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

Find the area of the triangle shown 3 by 6

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