Evaluate the expression 72/x2-2 for x=3

What is the formula for finding the circumference of a circle?

The length of a rectangle is 12 inches more than its width. What is the width of the rectangle if the perimeter is 42 inches? Choose what the expressions below best represent within the context of the word problem.

A fair coin is tossed 5 times. What is the probability of obtaining exactly 3 heads.

How to find length of a triangle given one side and angle

Order-3.98,3 8/9,-3 11/12 and3.9 from least to greatesy

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.