Use a formula to find the sum of the first 20 terms of the series defined by an =5(2)n-1.

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

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?

The table shows the webster family’s monthly expenses for the first three months of the year. they are $2,687.44, $2,613.09, and $2,808.64. what is the average monthly expenditure for all expenses?