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bookaholic

  • one year ago

Suppose x coins are tossed. Write an expression to represent the number of possible outcomes. A. 2^X B. X+X C. X*X D. 2X

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  1. andriod09
    • one year ago
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    so waht do you know about this already?

  2. bookaholic
    • one year ago
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    There are 2 sides to a coin

  3. andriod09
    • one year ago
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    >.< besides that. i mean what do you know about probability?

  4. bookaholic
    • one year ago
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    I know the probability of a coin landing on heads is 1/2 the same for tails

  5. bookaholic
    • one year ago
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    and I know every time you add a coin the chance that there will only be one heads halves

  6. andriod09
    • one year ago
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    so then you just answered your own question. what's the answer then?

  7. bookaholic
    • one year ago
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    but its talking about outcomes

  8. bookaholic
    • one year ago
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    not probability

  9. andriod09
    • one year ago
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    -_- >.< their the same region of math. >_<

  10. bookaholic
    • one year ago
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    They might be the same region but even in the same region you can get very different answers like when using sin cos and tan

  11. bookaholic
    • one year ago
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    Im confused here

  12. andriod09
    • one year ago
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    \[x^2\] that's the answer

  13. bookaholic
    • one year ago
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    thats not one of the answers available

  14. kropot72
    • one year ago
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    |dw:1360002853031:dw| The diagram shows the outcomes of tossing 1 coin, 2 coins and 3 coins. There are 2 outcomes for 1 coin, 4 outcomes for 2 coins and 8 outcomes for 3 coins. Can you make the correct choice of expression now?

  15. bookaholic
    • one year ago
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    um maybe

  16. kropot72
    • one year ago
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    Try substituting in each of the choices for 3 coins and see which gives the correct number of possible outcomes. For example choice B: x + x = 3 + 3 = 6 Therefore choice B is incorrect.

  17. kropot72
    • one year ago
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    @bookaholic Have you tried another substitution?

  18. kropot72
    • one year ago
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    @bookaholic Are you there?

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