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Tracy Bignell Math week 7 day 5

# Tracy Bignell Math week 7 day 5 - 5 world population...

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Tracy Bignell Week 7 Chapter 8 8.1 14. 12 9 + 15 = 24 ÷ 2 = 12 18. No mode 20. 9 10, 10, 9, 9, 9, 8, 8 Three nines two of the rest. 24. 169 miles 238 + 159 + 87 + 163 + 198 = 845 ÷ 5 = 169 36. (a) 176 (b) 183 (c) I believe the mean is a better representative for the final test scores. It may be more work to get the mean, but the accuracy is better. This gives a better estimate for the overall test score. 135 + 158 + 163 + 165 + 168 + 172 + 174 + 183 + 183 + 185 + 186 + 188 + 192 + 193 + 195 = 2640 ÷ 15 = 176 8.2 2. (a) 510,000,000 (b) 3,800,000 mi 2 4. Asia 4,028,000,000 population 64% world population 17,400,000 mi 2 land mass 30.1% North America 305,000,000 population

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Unformatted text preview: 5% world population 9,400,000 mi 2 land mass 16.2% 6. 43% 2,556,000,000 - 1,591,000,000 = 965,000,000 6,279,000,000 - 4,028,000,000 = 2,251,000,000 965,000,000 ÷ 2,251,000,000 = .428698 = 43% 8. 7% 38,000,000 ÷ 515,000,000 = .073786407766990 10. (a) 1,255,800,000 6,279,000,000/5 = 1,255,800,000 (b) 426,000,000 2,556,000,000/6 = 426,000,000 (c) 34% 426,000,000/1,255,800,000 = .33922 8.3 6. 400 8. 417robberies 400+ 500 + 300 + 300 + 400 + 600 = 2,500 ÷ 6 = 416.6666 = 417 10. \$760 8.4 2. 6. \$120,000 600,000 x .2 = 120,000 10. \$1,200 14. 8.5 4. 28 26 + 30 = 56/2 = 28 20. 1, 4, 7, 8, 9 38. 8 1,2,4,5,5,7,7,8,8,8,9 9-1 = 8...
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