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So since there are two unknowns in this question, its slightly more difficult than a normal equation where we only have 1 x or y that we're trying to work out. There are two ways to deal with this type of...
W:B = 2:5 Total of 21 litres of paint. We want a ratio of W:B = 1:4 = 2:8Therefore we must add 3 parts of blue paint2 + 5 = 7 parts total7 parts = 21L1 part = 3L3 parts = 9LTher...
so we need to know the understanding of BODMAS, hoe to add fractions, how to multiply fractions, how to simplify fractions.Answer:9/7
i) We must differentiate the equation and set it equal to 0 to find stationery points: dy/dx = 3x2 + 6x + 24=0 Note we can take out a factor of 3 x2+ 2x - 8=0 Fact...
x = -4/5 or 2y = 22/5 or -4
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