Algebraic Expressions, Identities and Formulae - Evaluation of Algebraic Expressions
Algebraic Expressions, Identities and Formulae - Evaluation of Algebraic Expressions
IP 2
3 marks
A formula is given as \(s=5r^{2}+3t\).
Find the value of \(s\) when \(r=-2\) and \(t=4\).
[1]Rearrange the formula to make \(r\) the subject.
[2]
Solution:
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Answer:(a) \(s=32\) (b) \(r=\pm\sqrt{\frac{s-3t}{5}}\)
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