Isolate Variable

Isolate a variable by:
1) Changing all "-" signs to "+ the opposite"
2) Use the distributive property
3) Identify like terms
4) Combine like terms
5)Add the opposite
6)Divide since division is the opposite of multiply

Showing a triangle is a right triangle by using algebra.

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Volume in cubic miles

We must think of the irregularly shaped object as a collection of known geometric shapes. Remember the formulas for are of a rectangle and a semicircle. We need to recall that the formula for Volume is area of base multiplied by height.

Isolate variable with mixed numbers

Container word problem

Here we recall "times" means multiply and we let a variable represent the unknown quantity.

Finding a point with certian constraints.