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ikoreanx3

  • one year ago

T(x)=230/x+60 +450/x+70 Find a simplified form of T(x) by adding the rational expressions in the function's formula. Then use this form of the function to find T(4).

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  1. mathstudent55
    • one year ago
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    |dw:1363489482623:dw|

  2. ikoreanx3
    • one year ago
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    yes.

  3. ikoreanx3
    • one year ago
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  4. Hope_nicole
    • one year ago
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    cross multiply :)

  5. mathstudent55
    • one year ago
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    You need a common denominator which is (x + 60)(x + 70)

  6. mathstudent55
    • one year ago
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    |dw:1363489750699:dw|

  7. Ghazi_Jr
    • one year ago
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    Mathstudent why did you give her the wrong answer

  8. Hope_nicole
    • one year ago
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    i would go with cross multiplying.

  9. mathstudent55
    • one year ago
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    @Ghazi_Jr Why am I wrong?

  10. Hope_nicole
    • one year ago
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    |dw:1363489909549:dw|

  11. mathstudent55
    • one year ago
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    @Hope_nicole This is not an equation where one fraction equals the other. This is a sum of fractions.

  12. Hope_nicole
    • one year ago
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    ahh, my bad. i read the question wrong. thank you @mathstudent55

  13. mathstudent55
    • one year ago
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    |dw:1363490250241:dw|

  14. mathstudent55
    • one year ago
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    |dw:1363490323918:dw|

  15. mathstudent55
    • one year ago
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    |dw:1363490424809:dw|

  16. ikoreanx3
    • one year ago
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    Thank you, guys. :)

  17. mathstudent55
    • one year ago
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    wlcm

  18. ikoreanx3
    • one year ago
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    Wait o: answer was 20(34x+2155)/(x+60)(x+70)

  19. ikoreanx3
    • one year ago
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    for T(x) =

  20. mathstudent55
    • one year ago
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    Just factor the numerator. 680x + 43100 = 20(34x + 2155)

  21. mathstudent55
    • one year ago
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    |dw:1363490918059:dw|

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