R-12 evaluate if r = 7

Use A=12bh to find the height of a triangle that has an area of 180 in^2 and a base of 20 in.

How many of the first 1992 prime numbers have reciprocals less tahn 0.05?

27 is 144 percent of what

Find the absolute value / - 26

Write 30:48 as a fraction in simplest form

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.