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calculusxy

  • one year ago

MEDAL!!! The sum of two numbers is 825. Dividing the larger number by the smaller number yields 8 with a remainder of 15. What are the two numbers? (You can solve this using a system of equations)

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  1. calculusxy
    • one year ago
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    @amistre64 @triciaal

  2. amistre64
    • one year ago
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    setup your system

  3. triciaal
    • one year ago
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    go step by step pick your 2 numbers decide which is larger sum is what you get when you add when you divide the original is the quotient * divisor + remainder

  4. triciaal
    • one year ago
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    |dw:1438640533271:dw|

  5. calculusxy
    • one year ago
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    x = larger number y = smaller number x + y = 825 y / x = 8 R 15

  6. calculusxy
    • one year ago
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    @triciaal Is this how I am supposed to start?

  7. calculusxy
    • one year ago
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    @Nnesha

  8. amistre64
    • one year ago
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    l + s = 825 yes l/s = 8 + 15/s should suffice

  9. amistre64
    • one year ago
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    l=8s+15 simplifies the 2nd

  10. calculusxy
    • one year ago
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    \[x + y = 825\] (x is larger) \[8y + 15 = x\] I just did the inverse of what it said. Since the larger number would have to be divided, and then a remainder of 15.

  11. calculusxy
    • one year ago
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    \[(8y + 15) + y = 825\] \[9 y + 15 = 825\] \[9y = 810\] \[ y = 90\] to find out x: \[825 =- 90 = 735 = x\]

  12. calculusxy
    • one year ago
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    Is that correct?

  13. amistre64
    • one year ago
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    90 and 735 work for me yes

  14. calculusxy
    • one year ago
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    thank you!!

  15. calculusxy
    • one year ago
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    I have another question. Can you please help me on that as well?

  16. amistre64
    • one year ago
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    maybe

  17. calculusxy
    • one year ago
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    okay one moment

  18. calculusxy
    • one year ago
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  19. calculusxy
    • one year ago
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    What is the x- intercept? A. -3

  20. calculusxy
    • one year ago
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    Am i correct?

  21. amistre64
    • one year ago
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    it intercepts the x axis .. at x=-3 yes

  22. calculusxy
    • one year ago
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    thank you!!!!!!!!

  23. amistre64
    • one year ago
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    but all i see is a picture and no real question attached to it

  24. triciaal
    • one year ago
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    this is not a real parabola if the vertex is at -3 then y cannot be 3 and -2 what is the complete question?

  25. triciaal
    • one year ago
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    |dw:1438642939447:dw|

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