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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...

Using integration by parts let U=x therefore du=dx.Let dv=5e^x therefore v=5e^x.answer = x*5e^x - integral(5e^x) = (x-1)(5e^x)

Using chain and product rule.dy/dx=(20x^3)cos(2x) - (10x^4)sin(2x)