If xy is rational, must either x or y be rational?

There are 200 paperweights in a box. The mass of each paperweight is 0.085 kilogram. The mass of the empty box is 560 grams. What is the total mass of the box and 200 paperweights?

This is the repeating pattern 8, 7, 6, 8, 7, 6, 8, 7, 6, ... from question 3. how many 8s are in the first 100 terms of the pattern?

Approximately how many plant made pharmaceuticals are currently under different stages of discovery? a. 100 b. 200 c. 300 d. 400

Mukul has $3.75 in quarters, dimes and nickels in his pocket. he has five more dimes than quarters and nine more nickels than quarters. how many of each coin are in his pocket?

Tom bought 2 1/16 pounds of peanuts and 2.45 pounds of cashews. Which did he buy more of? Explain.

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.