What is the measure of each interior angle of a regular icosagon?

What is 9 copies of 3.65

A rectangular tile has the dimensions shown below. What is the area of the tile? A rectangle has a length of 12 inches and a width of 2 inches.

Simplify the following expression 5^2-4/5+2

6x + 4x - 1 = 2 (5x+4)

What is the domain and range for { (-2,2), (0,5), (1,6), (1,7), (2,-1), (3,2) }

Gavin's anemometer measures the wind speed at 44.14 kilometers per hour. 4 times the wind speed 5 hours ago. What was the wind speed 5 hours ago?

Find the next three terms in the numbers sequence 3,10,19,26,_,_,_.

Simplify the expression cosxcscxtanx

Simplify (2^3) ^-2. 1) - (1/64) 2) 1/64 3) 2 4) 64

And is currently h years old. Bill is currently 2h years old and Charles is currently eight years old. Find an expression for each person's age after h years. Then find an expression for the sum of their ages after h years.