Ill mark the brainliest if you help me with the these three questions 7,8,9

1 answer:

8 0

Answer:

7) π 8) 6.25π 9) 16π

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Artemon [7]

Answer:

2/3 or .6 repeating

Step-by-step explanation:

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IceJOKER [234]

Step-by-step explanation:

-4x+1+6-(-9x)

-4x+7-(-9x)

5x+7

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IrinaVladis [17]

The answer is going to be 1/9

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Over [174]

Answer:

-1/11

Step-by-step explanation:

if this is one of the answer choices.

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Dvinal [7]

The answer is 2 bc I got it right on a quiz

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