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anonymous

  • one year ago

i just need to solve 0.037=x+1 please help

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  1. anonymous
    • one year ago
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    i think i need to divide both sides by x+1

  2. Vocaloid
    • one year ago
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    Subtract 1 from each side

  3. anonymous
    • one year ago
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    -0.963?

  4. anonymous
    • one year ago
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    @Vocaloid could you help me with 2 more?

  5. Vocaloid
    • one year ago
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    Sure

  6. anonymous
    • one year ago
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    The Mendes family bought a new house 9 years ago for $108,000. The house is now worth $165,000. Assuming a steady rate of growth, what was the yearly rate of appreciation? Round your answer to the nearest tenth of a percent (1.2% etc)

  7. Vocaloid
    • one year ago
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    First find (change in price)/(number of years)

  8. anonymous
    • one year ago
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    18333.33

  9. Vocaloid
    • one year ago
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    (165000-108000)/9 = ?

  10. anonymous
    • one year ago
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    6333.33

  11. Vocaloid
    • one year ago
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    right, now we find the percentage compared to the original price 100*(6333.33/108000) = ?

  12. anonymous
    • one year ago
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    5.864?

  13. Vocaloid
    • one year ago
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    right, then round to the nearest 10th

  14. anonymous
    • one year ago
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    5.9?

  15. Vocaloid
    • one year ago
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    right, so our answer is 5.9%

  16. anonymous
    • one year ago
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    An anthropologist finds bone that her instruments measure it as 0.494% of the amount of Carbon-14 the bones would have contained when the person was alive. How long ago did the person die? The half life of carbon 14 is 5,730 years. Round your answer to the nearest thousand.

  17. Vocaloid
    • one year ago
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    portion remaining = (2)^(number of years/half-life) .494/100 = (2)^(x/5730) solve for x

  18. anonymous
    • one year ago
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    i couldnt solve it

  19. anonymous
    • one year ago
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    @Vocaloid help, i couldnt solve it

  20. Vocaloid
    • one year ago
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    .494/100 = (2)^(x/5730) log(.494/100)/log(2) = x/5730

  21. anonymous
    • one year ago
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    @Vocaloid keep getting error and i cant solve it :(

  22. Vocaloid
    • one year ago
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    small correction log(.494/100)/log(0.5) = x/5730 7.66 = x/5730 x = 44,000 years (rounded)

  23. anonymous
    • one year ago
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    okay one more easy one e^2x+1=5.324

  24. andrearchat
    • one year ago
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    X=-.73

  25. anonymous
    • one year ago
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    1.672=2x+1 , now what? @Vocaloid

  26. anonymous
    • one year ago
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    wait no its 1.672=2x-1

  27. Vocaloid
    • one year ago
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    |dw:1438019083848:dw| is this what the problem looks like?

  28. Vocaloid
    • one year ago
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    or this? |dw:1438019123161:dw|

  29. anonymous
    • one year ago
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    its 2x-1 but yes

  30. Vocaloid
    • one year ago
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    does it match the first drawing or the second drawing?

  31. anonymous
    • one year ago
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    first

  32. Vocaloid
    • one year ago
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    ok, so we have e^(2x-1) = 5.324 take the natural log of both sides

  33. anonymous
    • one year ago
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    ln5.324=2x-1

  34. Vocaloid
    • one year ago
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    right, now solve for x

  35. Vocaloid
    • one year ago
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    add 1 to both sides, then divide both sides by 2

  36. Vocaloid
    • one year ago
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    [ (ln5.324)+1 ] / 2 = x

  37. anonymous
    • one year ago
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    1.336?

  38. Vocaloid
    • one year ago
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    yes

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