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Skirts are common in both ratios.
Multiply both ratios by the factors such that skirts are represented by the same number
Dresses: skirts = 7: 4
Skirts: blouse...
When asked to rationalise simple Surd (square roots that cannot be reduced to a whole number) fractions in the form a/√b we are aiming to remove the surd in the denominator (bottom).----------------------...
To start make the equation equal y.So y = 7x+4Then rearrange the equation to make x the subject.Subtract 4 from both sides: y-4 = 7xDivide by 7: (y-4)/7 = xNow write it in te...
Subtract the second equation from the first, giving you: 4x^2 -5x -6
Factorise the quadratic: (4x + 3)(x - 2)
x = -0.75
x= 2
Now substitute these...
Substitute x in terms of y into the first equation:
(2y+6)2+y2=36
Use FOIL to expand the brackets
4y2+24y+36+y2=36 ...
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