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Mathematics, 10.11.2019 05:31 Brainlyisuseful
Acar company has found that there is a linear relationship between the amount of money it spends on advertising and the number of cars it sells. when it spent 60,000 dollars on advertising, it sold 440 cars. moreover, for each additional 10,000 dollars spent, they sell 40 more cars.
a. if a car company invested 90,000 dollars in advertising, then how many cars did it sell?
b. if a car company sold 800 cars, then how much did it invest in advertising?
c. write an equation in y=mx +b form for the number of cars sold as a function of the amount of money spent on advertising. give units and real world meaning for m and b.
d. write an equation in y=mx + b form for the amount of money spent on advertising as a function of the number of cars sold. give units and real world meaning for m and b.
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Mathematics, 21.06.2019 19:20, alexcarrasco5903
1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?
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Mathematics, 21.06.2019 20:20, krystenlitten
Pls brainliest will be awarded if answer is correct
Answers: 1
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