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Mathematics, 20.11.2019 13:31 zalliagessnerp5fuj9
What is the correct solution to 1/2(x+18)=4(2x-6)-9x
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2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?
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What is the correct solution to 1/2(x+18)=4(2x-6)-9x...
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