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3 years ago

PLZ HELP ME. WILL GIVE BRAINLIEST. THANKYOU!!

Mathematics

1 answer:

____ [38]3 years ago

6 0

Answer:

x = 6

Step-by-step explanation:

Given

3x + 30 + x = 10 + 2x + 5x + 2 , simplify both sides

4x + 30 = 7x + 12 ( subtract 7x from both sides )

- 3x + 30 = 12 ( subtract 30 from both sides )

- 3x = - 18 ( divide both sides by - 3 )

x = 6

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3 years ago

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Find the multiplicative inverse of 7 in mod 9<br>

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Step-by-step explanation:

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7 0

3 years ago

What is the magnitude of the resultant vector of z-y?

Kobotan [32]

For this case what we should do is take into account the following vectors:

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We must find the following subtraction of vectors:

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$z-y = ((- 1 + 6), (5-2), (3 + 1))$

By writing we have:

$z-y = (5,3,4)$

Then the module of the resulting vector is given by:

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Rewriting we have:

$| z-y | = \sqrt {50}\\ | z-y | = \sqrt {2 * 25}\\ | z-y | = 5\sqrt {2}$

Answer:

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option B

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3 years ago