Fred has a bookcase that is 41.5 inches high. If shelves are evenly-spaced and about 8.3 inches apart, how many shelves are on Fred's bookcase?

At one time during 2001 for every 20 copies of Harry Potter and the Sorcerer's Stone that were sold 13.

The radius of circle L is 22 cm. What is the length of its diameter?

A lakeshore lot was describe in a real estate magazine.

Ann made a 33-step staircase using 1818 toothpicks as shown in the figure. How many toothpicks does she need to add to complete a 55-step staircase?

Find the second fifth and eleventh term. a (n) = - 3 + (n-1) (5)

Find all values of x such that sin 2x = sin x and 0 ≤ x ≤ 2π. (enter your answers as a comma-separated list.)

Which rectangular equation is equivalent to the polar equation r cos theta = - 2

How do I find the answer to 0.008 is 1/10 of

Write the following proportions using colons 7 is to 21 as 3 is to 9

With a tail wind, a plane traveled 840 miles in 3hrs. With the same wind as a head wind, the return trip took 30 minutes longer. Find the plane's airspeed (in still air) and the wind speed ... So lost smh