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Intermediate November 2016 Unit 2 Q12

WJECIntermediateCurrent spec3 marksCompound MeasuresIndicesSimplifying Basic Expressions

12. Circle the correct answer for each of the following.

(a) \(x^3 \times x^6 =\) [1]

\(x^{36}\)     \(x^{0{\cdot}5}\)     \(x^2\)     \(x^9\)     \(x^{18}\)

(b) \((7x - 5y) - (3x + 2y) =\) [1]

\(4x - 3y\)     \(4x - 7y\)     \(4x + 3y\)     \(-4x + 7y\)     \(-4x - 7y\)

(c) A car travels \(x\) miles in 30 minutes.
Its average speed in miles per hour is [1]

\(\dfrac{x}{2}\)     \(\dfrac{x}{30}\)     \(2x\)     \(\dfrac{2}{x}\)     \(30x\)

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