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For any percentage that is a factor of 10 you can always start off by dividing by 10.So for example, 20%, 30%, 40% of a value, you always start off by diving by 10.In this case we divide 14,000 by 10 = 14...

To find the percentage profit, we must first find the amount of money she receives from the sale of the bags of sweets.This is equal to the number of bags sold multiplied by the sale price of each bag.The...

Step 1 - Label y = x²  + 4x – 8 as equation 1 and y = - 2x – 17 as equation 2.Step 2 - In this particular question it is easier to eliminate the y variable from both equations, as they are both...

LHS: Factorise numerator and denominator, which gives:((2x - 7)(x + 2))/((x + 2)(x + 4))Cancel out (x + 2), gives:(2x - 7)/(x + 4)Multiply both sides by (x + 4)(x + 3) to cancel the denominators, gives:(2...

Let n be any whole number. Any odd number can be written as 2n+1. Any odd number squared is therefore (2n+2)²=2n2n+22n+1=4n²+4n+1=4(n²+n)+1. n²+n is a ...