Lance lived in portugal and brazil for a total of 25 months to learn portuguese. he learned an average of 130 new words per month in portugal, and an average of 150 new words per month in brazil. in total he learned 1920 new words.

write a system of equations to represent this situation. let x represent portugal and let y represent brazil.

How many glue sticks are in a basket containing 96 scissors, if the ratio of glue sticks to scissors is 19 to 57.

What is the radical expression that is equivalent to the expression 27 1 over 5?

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.