1 year ago

Helpppppppppppppppppppppppppppppppppppp

Mathematics

1 answer:

katovenus [111]1 year ago

8 0

Answer: x-9

Step-by-step explanation: because x is lower than Tony's money you would have to subtract x (Michelle's money) from Tony's ( which is 9)

This is why the answer would be X-9

Hope this helps!!!

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When Stephan moved from Illinois to Florida, his average monthly electric bill increased from $83 to $102. He is curious to know

kondaur [170]

Answer: The z-scores for Stephan's IL and FL electric bills. are -0.625 and 0.75 respectively.

Step-by-step explanation:

Given: Average monthly electric bill in Illinois = $83

Average monthly electric bill in Florida = $102

Formula of z : $z=\dfrac{X-mean}{standard\ deviaton}$

In Illinois, the mean monthly electric bill is $85, with a standard deviation of $3.20.

$z=\dfrac{83-85}{3.20}= -0.625$

In Florida, the mean monthly electric bill is $105, with a standard deviation of $4.00.

$z=\dfrac{105-102}{4}=\dfrac{3}{4}=0.75$

Hence, the z-scores for Stephan's IL and FL electric bills. are -0.625 and 0.75 respectively.

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Answer:

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set up a porportion.

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Espero ter ajudado

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