Make x the subject of the formula 4(2x-y) = 3ax - 5
4(2x-y) = 3ax - 5Step 1 - Expand 8x - 4y = 3ax - 5Step 2 - Collect like terms 8x - 3ax = 4y - 5Step 3 - Factorise x(8-3a) = 4y - 5Step 4 - Isolate x x = (4y - 5)/(8-3a)
AS
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All answers ▸There are "n" sweets in a bag, six are orange and the rest are yellow. If you take a random sweet from the bag and eat it. Then take at random another one and eat it. The probability of eating two orange sweets is 1/3. Show that n²-n-90=0.
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3n + 2 < 14, and 6n / (n ^2 + 5) >1. Find the values that n can take.
Solve: x/x+4 + 7/x-2 = 1 (Must show working)[4 marks]