Dan had 42 books in his library. he bought several books at a yard sale over the weekend. he now has 58 books in his library. how many books did he buy at the yard sale? write a equation to solve each problem then solve the equation

Always sometimes never: one angle in a triangle is more than 90° Always Sometimes Never

Mandy's new baby sister weighs 8 1/2 lb. when mandy was born, she weighed 116 oz. what is the difference in their two birth weights? give your answer in oz

The half-life of a certain radioactive material is 71 hours. An initial amount of the material has a mass of 722 kg. Write an exponential function that models the decay of this material. Find how much radioactive material remains after 17 hours.

What is the best clarification of - 60 in the real number system

Earle says that m X (-1) is always equal to m = (-1), for all rational values of m. Is he correct?

On a trip, you had to change your money from dollars to British pounds. You got 560560 pounds for 800800 dollars. Which is a unit rate that describes the exchange?

15. A bottling company produces 7,200 cans of iced tea per day. How many 12-can cartons can be filled? A 6 cartons B 60 cartons C 600 cartons D 700 cartons

Celia and Ryan are starting a nutrition program. Celia currently consumes 1200 calories a day and will increase that number by 100 calories each day. Ryan currently consumes 3230 calories a day and will decrease that number by 190 each day.

Solve the division problem round answer to nearest hundredth 9.2/52.063

Roland rented a truck when he moved. He paid a $105 rental fee, 0.20 per mile and a 10% insurance fee on top of the rental fee. If he drove the truck 325 miles, how much did he pay