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I would ask the student what they understood of percentages and if they understood the relationship between fractions and percentages. I would explain that 1% of a value is the same as 1/100 of a value...
x2 + y2 + 10x + 2y - 4xy = 10 Start by differentiating both sides by x, the terms not containing y are differentiated normally, x2 becomes 2x, 10x becomes ...
As distance is equal to speed multiplied by time, the distance Paul has traveled is 90 multiplied by T, or 90T. As Mary is making the same journey, she travels the same distance. The distance she...
To simplify a surd, remember thatsqrt(a*b) = sqrt(a)sqrt(b)If either a or b are square numbers, you can simply write its square root. Hence, to simplify a surd, you must look for any ...
E.g you have 2 equations and have to set them equal to each other. 2x + 3y = 6 -3x + y = 2
multiply first equation by 3, second by 2 to get 6 x + 9y = 18 -6 x +...
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