3 years ago

can someone please tell me the equation for the word problem it substitution method . worth 20 points.

Mathematics

1 answer:

-Dominant- [34]3 years ago

4 0

Larger:x Smaller:y

x=2y-5

x=-4y+7

x=2y-5=-4y+7

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The simplified expression of $$4 x \cdot \frac{1}{x^{-5}} \cdot x^{-3}$ is $4x^3$ .

Solution:

Given expression is $4 x \cdot \frac{1}{x^{-5}} \cdot x^{-3}$ .

To simplify the given expression.

$$\Rightarrow4 x \cdot \frac{1}{x^{-5}} \cdot x^{-3}$

Using exponent rule: $\frac{1}{a^{-m}}=a^m$

$$\Rightarrow4x \cdot x^{5}.x^{-3}$

Using another exponent rule: $a^m \cdot a^n=a^{m+n}$

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$$\Rightarrow4x^{1+2}$

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Hence the simplified expression of $$4 x \cdot \frac{1}{x^{-5}} \cdot x^{-3}$ is $4x^3$ .

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can someone please tell me the equation for the word problem it substitution method . worth 20 points.​

can someone please tell me the equation for the word problem it substitution method . worth 20 points.