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This is a compound interest problem. Here we have to put 18 months in terms of years. There are 12 months in a year, so 18 months is a year and 6 months.
6 months is half a year, so 18 months repres...

We can use the cosine rule to determine the lenght of XY.
XY² = 10²+8²-2108cos ZXY² = 100+64-180(1/8) = 144XY = 12

Do 2x -2 = -4List these factors Choose two of those factors which equal to -3x, in this case 1 and -4 (or the other way around)Rewrite the equation as 2x² + x - 4x -2, then factorise this in tw...

To solve this equation we must first factorise it. To do this we initially write two brackets containing x equal to zero like this (x )(x )=0.Then we want to identify the other part of our bracket. Th...

Percentage profit = (profit/original )x 100

To find the profit; £38x5+11 - (6x£25) = £51

Percentage profit = (£51/6x25)x100 = 34%