Simplify 19/12 for me

Find the volume of a cylinder with a radius of 8 cm and height 10 cm?

Solve 3x - 5y = 17 9x - 15y = - 4

Dave bought 100 feet of string. He needs one 19.5 foot section and multiple 3.5 foot sections for a project. How many 3.5 foot sections of string can he get after using the 19.5 foot section?

Explain - 3 1/3, 3.3, - 3 and 3/4, 3.5 from least to greatest

Which describes Kelsey's error? Kelsey graphed the y-intercept on the x-axis. Kelsey graphed - 3 instead of 3 as the y-intercept. Kelsey graphed the slope as up 1 right 1 instead of up 1 left 1.

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.