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artcher [175]
3 years ago
14

Help i'm doing math i have 10 minutes! :/

Mathematics
2 answers:
vova2212 [387]3 years ago
8 0
Answer: x=7
(Trust me)
34kurt3 years ago
8 0

Answer:

x=7

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

.

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When considering a normal distribution of scores, what percentage of scores is equal to or below the mean
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Answer:

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5 0
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Read 2 more answers
current rules for telephone area codes allow the use of digits 2-9 for the first digit and 0-9 for the second and third digits.
lukranit [14]
In this question, there are 10 digit phone number which was divided into 3-3-4 digits. Every first digit of the division should be 2-9 which mean only 8 possibilities. The other digits would be 0-9 which mean 10 possibilities. Then the calculation would be:

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If you convert <span>400,000,000 into the scientific form it will become 4* 10^8. Since 5.12*10^9 > 4 * 10^8, then it is clear that the number should be enough</span>
5 0
3 years ago
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