Which expression is equivalent to 1 over 81

Carl has 16 cd's and 1/4 of them are classical music how many cd's are classical? How many are not?

John is installing five solar panels on the roof of his house. The width of each panel is between 2 feet and 4 feet, and the length of each panel is between 3 feet and 6 feet. John estimates the total area of the five panels to be 140 square feet.

On a road map of Virginia, the distance from Alexandria to Roanoke is 7.6 cm. What is the actual distance between the cities if the map scale is 2 cm = 50 mi?

My number has 8 tens. the digital in the ones place is greater than the digit in the tens place. what my number is

7/14 in the simplest form

What is the exact area of a circle with a diameter of 44 ft? answers on bottom

A dime weighs 1/12 ounce Jody has 1 pound of dimes about many dimes does she have?

Which expression is equivalent to - 13 (6x+15) - 3

Determine all the zeros of m (x) = x² - 4x + 3, algebraically

The rules (postulates, theorems, etc) are the same for Euclidean and non-Euclidean Geometry