Adentist wants to find out how often her patients floss their teeth. which samples are biased? check all that apply. all her patients patients with no cavities patients younger than 18 every 20th patient every patient with braces

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?

Adozen bananas weigh 3 pounds how many ounces does 1 banana weigh

Is the figure congruent? yes or no?