What is 12 and 5 tenths in decimal form

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"

Melanie is buying a bathing suit that costs 39.99. she is given a discount at the cash register of $6.00 when she scratched 15% off on a game piece for a store promotion. what will the sale price of melanie’s bathing suit be?

For the right triangle shown, the lengths of two sides are given. find the third side. leave your answer in simplified, radical form.