anonymous
  • anonymous
Matthew has been observing 10 bacteria in a petri dish for his science class,If the bacteria population doubles every 12 hours, how many bacteria will be in the dish after 2 full days?A. 20 bacteria B. 40 bacteria C. 80 bacteria D. 160 bacteria The element lawrencium has a half-life of 10 hours. What fraction of 1 ounce of lawrencium will remain after 4 days 4 hours? A.1/50 B.1/60 C.1/512 D.1/1024 Alexandre bought a car for $8,000 in 2005. The value of the car declines at a rate of 7.1% every year Alexandre owns it. If he sells the car in 2009, what will be the approximate value of the car
Mathematics
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anonymous
  • anonymous
Matthew has been observing 10 bacteria in a petri dish for his science class,If the bacteria population doubles every 12 hours, how many bacteria will be in the dish after 2 full days?A. 20 bacteria B. 40 bacteria C. 80 bacteria D. 160 bacteria The element lawrencium has a half-life of 10 hours. What fraction of 1 ounce of lawrencium will remain after 4 days 4 hours? A.1/50 B.1/60 C.1/512 D.1/1024 Alexandre bought a car for $8,000 in 2005. The value of the car declines at a rate of 7.1% every year Alexandre owns it. If he sells the car in 2009, what will be the approximate value of the car
Mathematics
chestercat
  • chestercat
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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Janu16
  • Janu16
2. so its 1/1024 oz
Janu16
  • Janu16
3. - 7.1% every year, so 0.929 x 8000 = 7432 year 2006 year 2007 0.929 x 7432 = 6904.32 year 2008 0.929 x 6904.32 = 6414 year 2009 0.929 x 6414 = 5958.72
Janu16
  • Janu16
1. two days would be 48 hours which means it would double 4 times So the answer would be 2^4 (which is 16) times the original 10 - making a total of 160

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anonymous
  • anonymous
thanks do you thinks you can answer this one as well------------ Freddy was asked to write the following expression in simplest form: 3^12x3^/3^-3 What is the simplest form of the expression? A.3^19 B.3^13 C.3^-13 D.3^-16
Janu16
  • Janu16
what does that up arrow mean?

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