(72*78*85*90*90)/(68*84*91*108) (There's an easier way than multiplying out the giant products 72 78 85 90 98 and 68 84 91 108)HOW?!

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.

Empty box + box + empty box fill in the box is equal to 30 how

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.