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Faman39

  • 3 years ago

The world population in the year 2011 was approximately 7 x 10^9 people. If the population doubles in 100 years, how many people will be on the earth in the year 2111? Write your answer in scientific notation.

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  1. skullpatrol
    • 3 years ago
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    Any ideas?

  2. Faman39
    • 3 years ago
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    Seriously not at all :(

  3. skullpatrol
    • 3 years ago
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    Do you know what the word "double" means?

  4. Faman39
    • 3 years ago
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    It could be 10 times 10, isnt it?

  5. skullpatrol
    • 3 years ago
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    No, it means " 2 times "

  6. Faman39
    • 3 years ago
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    i thought, i will have to make 10 exponent 10 ? so it is not 7 * 10 ^10

  7. skullpatrol
    • 3 years ago
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    No.

  8. Faman39
    • 3 years ago
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    So

  9. Faman39
    • 3 years ago
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    what is it and how?

  10. skullpatrol
    • 3 years ago
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    "If the population doubles in 100 years," means whatever the population is now; it will be 2 times that in 100 years from now.

  11. Faman39
    • 3 years ago
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    200

  12. Faman39
    • 3 years ago
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    ?

  13. skullpatrol
    • 3 years ago
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    Not 2 times 100 years, but 2 times the population.

  14. skullpatrol
    • 3 years ago
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    |dw:1358429505360:dw|

  15. Faman39
    • 3 years ago
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    I got 140 after multiply

  16. skullpatrol
    • 3 years ago
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    How did you get 140? Is that your complete answer?

  17. Faman39
    • 3 years ago
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    it is not my final answer

  18. Faman39
    • 3 years ago
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    i have to write this in scientific notation

  19. Faman39
    • 3 years ago
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    right?

  20. skullpatrol
    • 3 years ago
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    That is what the question asks: " Write your answer in scientific notation." right?

  21. Faman39
    • 3 years ago
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    1.4 * 10 ^10, isnt it?

  22. Faman39
    • 3 years ago
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    No

  23. Faman39
    • 3 years ago
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    tell me if i did something wrong with it

  24. skullpatrol
    • 3 years ago
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    You are correct.

  25. Faman39
    • 3 years ago
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    Thank you so much, it is just because of you. Thanks alot @skullpatrol ! :)

  26. skullpatrol
    • 3 years ago
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    np

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