What is the LCM and the gcf of 21 and 30 and 44

Estimate 9 5/19 to the nearest tenth

The National Honor Society at Central High School plans to sample a random group of 100 seniors from all high schools in the state in which Central High School is located to determine the average number of hours per week spent on homework.

An angle measures 34° less than the measure of its complementary angle. What is the measure of each angle?

Katy saves dimes and quarters. She has 40 coins, which totaled $6.55, in her bank. How many of each coin does she have?

Sandra read 5 books, Deacon read 6 books, and Breanna read 7 books. One book was read By all 3 children, but every other book was different. How many different books did the children read?

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.