I'm not sure where this goes, but I figured if you're good at science, usually you're pretty good at math so...anyways I have three problems that I am stuck on and cannot remember at all how to do.
x^4 over 4 divided by x^3 over 20
and then inequalities... I have to solve and then graph for this 2x + 4y < 1
Last The formula k = 1\2 mv^2 relates the kinetic energy of a body to its mass m and speed v. Solve the formula for m.
The first is easy. First, write x^4/4 out, the x^4 above the 4.
Now, diving is the inverse of multiplying. With fractions, this means that diving by x^3/20 is the same as multiplying by 20/x^3.
If you do this (when multiplying fractions, you just join the tops and bottoms together, and multiply like normal), then you'll see that 20/4 is 5. Diving x^4 by x^3 is simply x (the powers cancel out).