A5: understand and use standard mathematical formulae; rearrange formulae to change the subject

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9 Terms

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Standard mathematical formulae

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2
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What is rearranging formulae?

A way of changing the subject of the formula to find a missing value

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Rearrange s=d/t to find t

T=d/s

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Rearrange this formula to make c the subject; a=c−w

C=a+w

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Make t the subject of the formula; v = u + 10t

V-u=10t

T=(v-u)/10

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Make m the subject of the formula s = hm/4

4s=hm

4s/h=m

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Make y the subject of the formula: k = y³ + a

K-a=y³

3√k-a=y

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Rearrange the formula r = 3w+t to make t the subject

r²=3w+t

r²-3w=t

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Rearrange v² = u² + 2as to make s the subject.

V²-u²=2as

(V²-u²)/2a

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