The formula of the midpoint of HE:

We have H(0; 0) and E(2a; 2a). Substitute:
One interpretation of your intent would be as follows:
16x^11y^8
Find 4 √ [-----------------]. Is that what you meant?
81x^7y^6
4*x^5*√x*y^4
If so, then the correct result would be 4 ---------------------
9*x^3*√x*y^3
and this could be reduced to:
4*x^5 * y^4 * √(x) 4*x^2*y
4 --------------------------- = -------------
9*x^3*y^3 √(x) 9
Answer:
$480
Step-by-step explanation:
So first, you find how much he paid per hour which would be 80 * 5 = $400. Then, you have to add the tip in so you do $400 * 1.2 (or 120%) = $480.