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3 years ago

Solve the following. 2x^2-7x-4/6x^2+7x+2<0 Can someone explain how to solve this.

Mathematics

1 answer:

oksano4ka [1.4K]3 years ago

4 0

Answer:

Which one have same variable gather or decrease up

Step-by-step explanation:

2x^2-4.6x^2=1.4x^2

-7x+7x=0

1.4x^2+2<0

x<0

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3 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

If a=i+7j+k and b=i+11j+k, find a unit vector with positive first coordinate orthogonal to both a and

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Take the cross product, then normalize the result.

$\mathbf a\times\mathbf b=\begin{vmatrix}\mathbf i&\mathbf j&\mathbf k\\1&7&1\\1&11&1\end{vmatrix}=-4\,\mathbf i+4\,\mathbf k$

This has norm

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and so a unit vector orthogonal to both given vectors is

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An equally correct answer would be the negative of this vector, since $\mathbf b\times\mathbf a=-\mathbf a\times\mathbf b$ .

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3 years ago

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AysviL [449]

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Step-by-step explanation:

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3 years ago

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eimsori [14]

Answer:

x = 9/2.

Step-by-step explanation:

2/3 x + 4 = 7

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