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kearsten

  • one year ago

medal and fan The area of a rectangular coffee table is given by the trinomial t^2+ 7t –8. The table’s length is t +8. What is the table’s width?

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  1. anonymous
    • one year ago
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    Area of a rectnagle is length x breath

  2. jdoe0001
    • one year ago
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    \(\bf Area=length\cdot width\implies \cfrac{Area}{length}=width\)

  3. anonymous
    • one year ago
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    in mathematical terms: A= l x b or t^2 +7t-8 = w x (t+8)

  4. anonymous
    • one year ago
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    Or you can factor it.

  5. anonymous
    • one year ago
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    w is therefore: t^2 + 7t -8 divided by t+8

  6. jdoe0001
    • one year ago
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    so, what did you get then kearsten ?

  7. anonymous
    • one year ago
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    @ mathway is correct, if you solve this quadratic you will see one of the factors is t+8

  8. anonymous
    • one year ago
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    There are so many options to get the answer, just choose. :)

  9. kearsten
    • one year ago
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    you guys are confusing me. im suupposed to be learning factoring

  10. anonymous
    • one year ago
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    |dw:1438901621986:dw|

  11. anonymous
    • one year ago
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    That's what I said. You factor the trinomial.

  12. anonymous
    • one year ago
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    (t-1)(t+8) = t^2 +7t -8

  13. kearsten
    • one year ago
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    is that the answer? or is there more simplifying

  14. anonymous
    • one year ago
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    Hi kearsten, the answer is that the length is t-1, we dont know t, so we cant say anymore other than the length is t-1

  15. kearsten
    • one year ago
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    but im supposed to find the width not the length

  16. anonymous
    • one year ago
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    soory, I meant t-1 is the width, you were given the length

  17. kearsten
    • one year ago
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    that makes more sense thanks for your help

  18. anonymous
    • one year ago
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    You are very welcome kerarsten, sorry for the confusion!

  19. kearsten
    • one year ago
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    np lol

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