Which conjunction or disjunction is equivalent to the following inequality? |a - 9| ≤ 4 a - 9 ≤ 4 and a - 9 ≤ - 4 a - 9 ≤ 4 and a - 9 ≥ - 4 a - 9 ≤ 4 or a - 9 ≤ - 4 a - 9 ≤ 4 or a - 9 ≥ - 4

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

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 florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.

Una caja de galletas contiene 16 paquetes y cada una de estas tiene 12 galletas y se quieren repartir entre 6 niños ¿de cuantas galletas le toca a cada niño?