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Oxana [17]
3 years ago
13

Y = 5x – 2 2x + 9y = 10

Mathematics
1 answer:
Scilla [17]3 years ago
5 0
The answer is
x= y+2/5
x= 1/2
​
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Which expression is the simplest form of...
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The answer is option A

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<h3>( {x}^{ -  \frac{4}{7} } )^{7}</h3>

Using the rules of indices

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<h3>( { {a}^{x} })^{y}  =  {a}^{x \times y}</h3>

Simplify the expression

We have

<h3>( { {x}^{ -  \frac{4}{7} } })^{7}  =  {x}^{ -  \frac{4}{7} \times 7 }   \\  =  {x}^{ - 4}</h3>

Again using the rules of indices

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<h3>{x}^{ - y}  =  \frac{1}{ {x}^{y} }</h3>

The final answer is

<h3>\frac{1}{ {x}^{4} }</h3>

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3 years ago
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Step-by-step explanation:

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Step-by-step explanation:

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