austinwst3
13.10.2019 •
Mathematics
Best answer gets !
which expressions are equivalent to 4(4x + 2y + x − y)?
4(5x + 3y) and 20x + 12y
4(5x + y) and 20x + 4y
4(3x + y) and 12x + 4y
4(3x + 3y) and 12x + 12y
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Ответ:
The population of the town will be 86,000 in 2015.
Explanation: Between 1950 and 2010 (60 years) , the population rose by 36,000. To find out how much the pop. rose each year, we divide 36,000 by 60 (the amount of years) and get 600. Between 2010 and 2015 there are 5 years. 5x600 = 3,000. 3,000 + 83,000 (population in 2010) is 86,000.