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Advocard [28]
3 years ago
11

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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Answer:

f(4) = 1

Step-by-step explanation:

f(4) = what?

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7 0
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
Scilla [17]
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.
5 0
3 years ago
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AysviL [449]

Answer:

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Step-by-step explanation:

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5 0
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5. Two-thirds a number plus 4 i 7.​
eimsori [14]

Answer:

x = 9/2.

Step-by-step explanation:

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2/3 * 3/2 x = 3 * 3/2

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