Saul se ha gastado mas de 3/5 del dinero que tenia en unos audífonos y en helados. Si tenia 150 Bolivianos. ¿ Cuanto dinero se ha gastado ? ¿ cuanto le sobra?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

According to the 2008 u. s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.

Which expression is the factorization of x^2+10+21