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They key to answering this question is that it is only asking for an estimate. So you don't need to provide an exact answer; as long as your answer is within a certain range you will get full marks pro...
In order to simplify a surd you need to look at the factors of the number under the square root. You can then multiply together the square roots of the factors.
For example if you wanted ...
2x + y = 10 (1)
3x + 4y = 25 (2)
1. Eliminate y.
Method 1:
(1) x 4:DDAnswered by Daisy D. • Maths tutor11157 Views
If you're asked to solve a quadratic equation, you could factorise it, or you could use the quadratic formula. The quickest way is to factorise, but sometimes the numbers are too tricky to factorise, (...
The first thing we should note here is that we are looking for the area, so we need to recall the formula for the area of a right-angled triangle:
Area = (base x height) / 2KSAnswered by Kirsty S. • Maths tutor12836 Views
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