How to add and subtract mixed number

There are 3 cubes each measuring a different whole number inches on an edge. When the cubes are stacked, the stack is 6 inches high. What is the length of each edge on each cube.

Subscriptions for a magazine decreased by 10% this year. Last year, there were 13,270 subscriptions. How many subscriptions are there this year?

A herd of 52 horses has 12 white horses and some black horses. What is the ratio of white horses to black horses

The formula for the area of a triangle is a = 1/2bh in which b represents the length of the base Andy represents the height. If a triangle had an area of 192 mm squared and the height is 12 mm what is the measure of the base?

For all values of x, which expression is equivalent to 6 + 5x - 4 - 3x?

in 1995, there were 12,000 students at Beacon High. In 2000, there were 12,250. What is the rate of change in the number of students

Between which two thousands is the number 36,219

Find all the values of x for which the function is differentiable. f (x) = (x^3-8) / (x^2-4x-5)

0.1629 nearest tenth (0.1) look at the 0.01 place.

A parallelogram has an area of 34.75 square centimeters. If its height is 5 cm, find the base. 2.5 cm 13.9 cm 6.95 cm 16.25 cm