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stellarik [79]
2 years ago
7

The sum of a certain number and -3.4 is -8.1 find the number​

Mathematics
2 answers:
pentagon [3]2 years ago
6 0

Answer:

-4.7

Step-by-step explanation:

-8.1 + -3.4 = -4.7

This works because - and + are inverse operations, so you can use + to help find a - problem or see if it's correct, or vise versa.

alexira [117]2 years ago
5 0

Answer:

4.7

Step-by-step explanation:

If you use the rules of the signs to eliminate the minuses and then substract 8.1 from 3.4 you get 4.7 which, if you sum it with 3.4 gives 8.1

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Answer:

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Step-by-step explanation:

The equation of a circle can be written as:

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Therefore the x coordinate of the center is -8

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Therefore the y coordinate of the center is 3

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Take the square root of both sides

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