Two times the difference of a number decreased by five is fourteen. what is the number.

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?