Mathematics, 13.02.2020 22:59 amc9639
The acidity of liquids is measured by pH on a scale of 0 to 14. Distilled water has pH 7.0, and lower pH values indicate acidity. Normal rain is somewhat acidic, so "acid rain" is sometimes defined as rainfall with a pH below 5.0. The pH of rain at one location varies among rainy days according to a Normal distribution with mean 5.43 and standard deviations 0.54. What proportion of rainy days have rainfall with pH below 5.0? Explain.
Answers: 3
Mathematics, 21.06.2019 16:00
Asalesperson earns $320 per week plus 8% of her weekly sales. the expression representing her earnings is 320 + 0.08x. which of the following describes the sales necessary for the salesperson to earn at least $1000 in the one week?
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Mathematics, 21.06.2019 18:30
If you have the following equation, 2/3x+5/6-x=2-3/4x what would you multiply each term by to get rid of all the fractions
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Mathematics, 22.06.2019 00:30
Round each of the decimals to the nearest hundredth a. 0.596 b. 4.245 c. 53.6843 d. 17.999
Answers: 2
The acidity of liquids is measured by pH on a scale of 0 to 14. Distilled water has pH 7.0, and lowe...
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