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Eighth grade
AA.11 Solve a system of equations using elimination: word problems
Learn with an example
Write a system of equations to describe the situation below, solve using elimination, and fill
in the blanks.
A baseball coach takes her team out for pizza every time they win a game. Not everyone can
come each time, so she orders the pizzas based on how many players are coming. After last
week's victory, she bought 3 small pizzas and 2 large pizzas, the perfect amount for the 19
players going out for pizza. This week, there were 16 players going, so she ordered 2 small
pizzas and 2 large pizzas, which was also just the right amount. How many people does each
size of pizza feed?
Each small pizza feeds
people, and each large pizza feeds
people.
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The accompanying table shows the numbers of male and female students in a particular country who received bachelor's degrees in business in a recent year. complete parts (a) and (b) below. business degrees nonbusiness degrees total male 189131 634650 823781 female 169539 885329 1054868 total 358670 1519979 1878649 (a) find the probability that a randomly selected student is male, given that the student received a business degree. the probability that a randomly selected student is male, given that the student received a business degree, is nothing. (round to three decimal places as needed.) (b) find the probability that a randomly selected student received a business degree, given that the student is female. the probability that a randomly selected student received a business degree, given that the student is female, is nothing. (round to three decimal places as needed.)

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

Atown has a population of 17000 and grows at 2.5% every year. to the nearest year, how long will it be until the population will reach 19600?