2 years ago

Adam and his dad share the cost of the meal in the ratio of 2:3.

1 answer:

3 0

Adams dad pays 3/5 of the meal due to the ratio, so his cost divided by 3 gives you one fifth £17.40 so multiply that by 5 to get the overall cost of £87

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beks73 [17]

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<u>Answer:</u>

The correct answer option is c. $\frac{1}{9a^2}$ .

<u>Step-by-step explanation:</u>

We are given an expression $(27a^{-3})^{-\frac{2}{3} }$ and we are supposed to simplify it.

We can also write $(27a^{-3})^{-\frac{2}{3} }$ as $(\frac{3^3}{a^3} )^{-\frac{2}{3} }$ .

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So multiplying the exponents to get:

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Therefore, the correct answer option is c. $\frac{1}{9a^2}$ .

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