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Kay [80]
3 years ago
15

Solve for x if 7x =21 a. X=-3 b.x=14 c. =3 d. X= -14

Mathematics
1 answer:
vaieri [72.5K]3 years ago
5 0
I hope this helps you



7x÷7=21÷7



x=3
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What is the additive inverse of -2 + 8i?
tatuchka [14]

Answer:

2 - 8i

Step-by-step explanation:

The additive inverse of something is basically the opposite of it. Another way to say this is that when you add the additive inverse to -2 + 8i, it will equal 0.

<u>An example:</u>

The additive inverse of 7 is -7 because not only is it the opposite, but also when you add 7 and -7, it equals 0.

<u>To solve</u>

So all you need to do is find the opposite of -2 + 8i. You can write it as:

-(-2 + 8i)  With the negative in the front because we want to find the opposite.

This then equals:

2 - 8i

You can check your answer by adding -2 + 8i and 2 - 8i to see if it equals 0:

(-2 + 8i) + (2 - 8i)  →  and it does equal 0

<u>ANSWER:</u> 2 - 8i

Hope you understand and that this helps with your question! :)

8 0
2 years ago
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Anettt [7]

Answer:

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7 0
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Homework help please I'll give you 10 points and brainliest
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Answer:

c)

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Use 49 instead of 14 for 7²

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Isn't it 1/8?
I hope this helped i think i just simplified xD

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