8. Mark can clean his father's office in 30 minutes. His younger sister Lynn can clean the office in 40 minutes. How long will it take the two of them together to clean the office?

Jackie deposited $315 into a bank account that earned 1.5% simple interest each year. If no money was deposited into or withdrawn from the account, how much money was in the account after 3 years? Round your answer to the nearest cent.

How do you spell math?

It took a satellite 10 minutes to travel across the U. S., a distance of approximately 3000 miles. What was the satellite's speed in miles per second?

Justify each step of the solution by stating the property that was used to get to each step. Given: 2 (10-13x) + 9x=-34x+60 Step 1: 20-26x+9x=-34x+60 Step 2: - 17x=-34x+40 Step 3: 17x = 40 Step 4: x=40/17

A rope with a length of 24 yards is cut into 7 pieces of equal length. Which is the correct way to show how to find how many yards long each piece is?

Identify the slope of the equation: y = 5x + 2

Two fourths is how pieces of the whole

A ladder 13 feet long is leaning against a house. The base of the ladder is pulled away from the wall at a rate of 2 feet per second. How fast is the top of the ladder moving down the wall when its base is 5 feet from the wall?

A den has a circular rug. According to a small tag, the rug has an area of 50.24 square feet. What is the rug's diameter? Use 3.14 for .

Apply the distributive property to factor out the greatest common factor. 9+12n