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Why you need Math – top 5 reasons

July3

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  1. You need to use Mathematics to do a budget and work out whether you can afford something. This is especially important when buying your first car as you need to factor in the amount of a loan, the running costs, insurance, etc. I had a friend who had bought and sold 80 cars by the time he left school and he knew his “car maths” really well by the time he left!
  2. Mathematics is used to make a recipe and work out the ratios for doubling or halving the number of servings, etc.
  3. It is so important to be able to calculate distances and times taken to travel somewhere, allowing for different time zones.
  4. Having a good grasp of maths number facts (aka the Times Tables to 12) as well as knowing how to estimate values, helps you make quick calculations without having to find the calculator on your phone or ask someone else.
  5. Most important – being good at Mathematics will either help you get a better job (see this post and this one too) or help you get a faster promotion and earn a higher salary!
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y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]

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