Algebra: Chapter 13-5, p 595
Solving Rational Equations
Remember, we solve rational equations by multiplying both sides by the LCM of all the denominators. This can result is a quadratic equations. Sometimes, there can be extraneous solutions, so … you should always check all possible solutions. Practice makes perfect, use ANY method to factor, box, tables, graphs, even the quadratic formula.
Here are some more examples too.
Math-8: Chapter 12-7, p 644
Volume of Prisms and Cylinders
Its easy to do the volumes of prisms, find the area of the base and then multiply that by the height of the prism. For a rectangular prism, find the base area, `A=l⋅w`, then multiply that by the height `h`, or Volume, `V=l⋅w⋅h`.
For a cylinder, just replace the area of the base with the area of a circle, `A=πr^2`, then multiply that by the height. So, for a cylinder, we can rewrite that as `V=(πr^2)(h)`.