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5x -2y = 33 (substract) 5x + 8y = 18 -10y = 15y = -1.55x + 8(-1.5) = 18 5x = 30 x= 6
4x + y= 42x + y = 8y= 4-4xy= 8 -2x4- 4x = 8 -2x-4 = 2xx= -2y= 12
2x^2 - 16x + 6= 2(x^2 - 8x) + 6= 2((x-4)^2 - 16) + 6= 2(x - 4)^2 - 26So a = 2, b = -4 and c = -26
First calculate the fraction of the sample that travelled by car to be 13/20.Next multiply the total population size by this proportion to find the estimate of the total number of people who travelled by ...
The method used to solve this problem can be referred to as the FOIL Method, this is an acronym that stands for First, Outer, Inner, Answered by Poppy D. • Maths tutor7976 Views
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