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Quadratic Formula | AQA GCSE Maths Revision Notes So the equation of the line in the form \(y = mx + c\) is \(y = 1x + 3\) or just \(y = x + 3\). Example 2. Work out the equation of this graph. Gradient = \(\frac{\text{change up}}{\text{change. Standard form is written in the form of \ (a \times 10^n\), where \ (a\) is a number bigger than or equal to 1 and less than \ (n\) can be any positive or negative whole number. For example \. A more memorable form of this formula is: ?? ?? ? Bonus info: The general form of the formula given above actually applies to a square, rectangle, parallelogram and rhombus (its just that the width is constant for those). For a kite with given diagonals: #=1 2 1 2 When to use it.
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Refer to the Subject content section to determine the tier at which these formulae could be used. The solutions of , where. Where is the radius and is the diameter:. In any right-angled triangle where , and are lengths of the sides and is the hypotenuse:. In any triangle where , and are lengths of the sides:. Students are expected to know the following formulae or be able to derive them; they will not be given in the exam.

Where and are the lengths of the parallel sides and is their perpendicular separation:. Where is the All Equations For Maths Gcse Letter principal amount, is the interest rate over a Equations For Maths Gcse Aqa 90 given period and is number of times that the interest is compounded:. Where is the probability of outcome and is the probability of outcome :. Students are not expected to memorise the following formulae; they will be given in the exam in the relevant question.

Where is the radius of the sphere or cone, is the slant height of a cone and is the perpendicular height of a cone:. Solve the following simultaneous equations:. First, identify which unknown has the same coefficient. The inverse of adding 9 is subtracting 9, so subtract 9 from both sides:. Check the answers by substituting both values into the other original equation. If the equation balances, then All Equations For Maths Gcse Chemistry Pdf the answers are correct:.

Simultaneous equations Equations that have more than one unknown can have an infinite number of solutions. Solving simultaneous equations by elimination The most common method for solving simultaneous equations is the elimination method which means one of the unknowns will be removed from each equation.




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