What is opposite of 31

ewan makes chess boards from wood each bored has 3 different kinds of wood he has 5 kinds of wood in his workshop maple cherry walnut poplar and birch how many different types of chess board can he make

How many litres of pure antifreeze should be added to 5 litres of 30% antifreeze solution to create a 65% antifreeze solution?

Dani's Neighbours paid her to take care of their bird during their vacation Danny spent four dollars of her earnings on an afternoon snack and $16 on a new book afterwards, she had at least eight dollars left.

Ben bowled 147 and 206 in his first two games. What must he bowl in his third game to have an average of at least 200?

In eleven years ted will be 22 years old? How old is he now?

The table contains data for five students: hours slept, x, and corresponding test scores, y. Use the regression calculator to make a scatterplot with a trend line. A 2-column table with 5 rows. Column 1 is labeled x with entries 4, 6, 6, 8, 10.

5/8 * 24 in simplest form

5. The regular price of a Space Invader game is $52, but it is on sale. The discount is $13. What is percent discount is this?

Factor each expression (6s + 18t + 3w)

At a sale, a sofa is being sold for 32% of the regular price. The sale price is $147.20. What is the regular price?