What are the chances of me rolling a number less than 5 on a dice

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.

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?