Simplify: 7.2(2.8r-4.5s)+9.34r-1.25sa.) 29.5r - 33.65sb.) 10.82r + 31.15sc.) 10.82r - 31.15sd.) 29.5r + 33.65s

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

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.

How to solve a simultaneous equation involved with fractions?