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Anon25 [30]
4 years ago
7

How do you solve 7+2x=9?

Mathematics
2 answers:
sergeinik [125]4 years ago
7 0
Subtracted 7 from both side. youll be left with 2x=2. then you divide both sides and x would be 1.

Misha Larkins [42]4 years ago
6 0
You have to find the additive inverse of 7 which is -7 and you subtract  -7 on both sides and bring down 2x and the equal sign and your answer is 2. Next, find the multiplicative inverse of 2x = 2 and divide both sides by 2 and x = 1. Hope this help
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4 0
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A college-entrance exam is designed so that scores are normally distributed with a mean of 500 and a standard deviation of 100.
Crank

Answer: 1.25

Step-by-step explanation:

Given: A college-entrance exam is designed so that scores are normally distributed with a mean(\mu) = 500 and a standard deviation(\sigma) =  100.

A z-score measures how many standard deviations a given measurement deviates from the mean.

Let Y be a random variable that denotes the scores in the exam.

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6 0
3 years ago
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ivanzaharov [21]

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5 0
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