The bill for lunch was $28.95 before tax the tip was 20% based on the pre tax amount. How much money did they leave as a tip?

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

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.

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500