Solve the equation 3b=39

What is the answer to 4/5 - 1/4

A 6-sided number cube is rolled. What is the probability that it will land on a number greater than 2?

If f (x) = 2x^2+5 and g (x) = x^2-2 find (f-g) (x)

What happens to the mean and standard deviation of the distribution of sample means as the size of the sample decreases?

A scientist used 786 millimeters of liquid for an experiment. How many liters of the liquid did the scientist use for the experiment?

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.