Simplify 3 square root of 20 / square root of 5

A university study examined the relationship between amount of sleep and school performance in college-age students. The Venn diagram represents the students who participated in the study.

What is the area of a circle with a radius of 15 feet. Use 3.14 for pi. Round 2 decimal places

Find the fifth term in the geometric sequence, given the first term and the common ratio. a = 2 and r = 3 a5 = [?]

What is 30000 divided by 20000

Express 750g as a percentage of 1.5kg.

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.