Solve this ratio pls. 9 gallons to 28 quarts as a fraction in simplest form

Hello i need some with trigonometric substitutions. [tex]\int\limits^a_b {x} \, dx[/tex]

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

The sixth grade art students are making a mosaic using tiles in the shape of right triangles. each tile has leg measures of 3 centimeters and 5 centimeters. i f there are 200 tiles in the mosaic what is the area of the mosaic.