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Natalka [10]
3 years ago
14

–2x – 4 + 5x = 8

Mathematics
2 answers:
olga55 [171]3 years ago
8 0

Answer:

Isolate the variable, once isolated it will tell you what it is equaled. Combine liked terms first.

Step-by-step explanation:

attachment   shows it done step by step with explanation of what is happening.

andriy [413]3 years ago
5 0

Answer:

4

Step-by-step explanation:

-2x- 4 + 5x = 8

Collect like terms

-2x + 5x = 8 +4( when a variable crosses over equality sign it becomes either negative or positive depending on the sign)

3x = 12

Divide via by coefficient of x

X = 12/3

= 4

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Normalize this vector by dividing it by its norm:

\dfrac{\mathbf v}{\|\mathbf v\|}=\dfrac{\vec i+3\,\vec j-4\,\vec k}{\sqrt{1^2+3^2+(-4)^2}}=\dfrac1{\sqrt{26}}(\vec i+3\,\vec j-4\vec k)

To get another vector orthogonal to the first two, you can just change the sign and use -\mathbf v.
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Step-by-step explanation:

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