employees at a company are given a five digit employee identification code. if each digit cannot be repeated, how many different codes are possible?

Tamera puts 15/4 gallons of gasoline in her car. which mixed number represents the gallons of gasoline? a) 2 3/4 gallons b) 3 1/4 gallons c) 3 3/4 gallons d) 4 1/2 gallons answer it's worth a lot of points!

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The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.