Which of the following is the equation for the graph shown?

x squared over 20 plus y squared over 36 equals 1
x squared over 36 plus y squared over 20 equals 1
x squared over 20 minus y squared over 36 equals 1
x squared over 36 minus y squared over 20 equals 1

Suppose there is a simple index of three stocks, stock abc, stock xyz, and stock qrs. stock abc opens on day 1 with 4000 shares at $3.15 per share. stock xyz opens on day 1 with 5000 shares at $4.30 per share. stock qrs opens on day 1 with 6000 shares at $4.60 per share. the price of stock abc on day 8 begins at $3.50. the price of stock xyz on day 8 begins at $3.90. stock qrs opens on day 8 with a price of $4.50 per share. assume that each stock has the same number of shares that it opened with on day 1. what is the rate of change of this simple index over 1 week?

The solution set for 5v2 – 125 = 0 is

Suppose i flip two identical coins. what is the probability that i get one head and one tail?