En una rifa participan 400 boletos numerados del 000 al 399. Si compras un boleto al azar: a) ¿Cuál es la probabilidad de que hayas comprado el boleto ganador?
b) ¿Cuál es la probabilidad de que no hayas comprado el boleto ganador?
c) Si compras 20 boletos, ¿Cuál es la probabilidad de que resultes ganador?

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?

Given: ac and db are diameters. m∠3=

Me asap on # : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.