kearsten
  • kearsten
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?
Mathematics
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Area of a rectnagle is length x breath
jdoe0001
  • jdoe0001
\(\bf Area=length\cdot width\implies \cfrac{Area}{length}=width\)
anonymous
  • anonymous
in mathematical terms: A= l x b or t^2 +7t-8 = w x (t+8)

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anonymous
  • anonymous
Or you can factor it.
anonymous
  • anonymous
w is therefore: t^2 + 7t -8 divided by t+8
jdoe0001
  • jdoe0001
so, what did you get then kearsten ?
anonymous
  • anonymous
@ mathway is correct, if you solve this quadratic you will see one of the factors is t+8
anonymous
  • anonymous
There are so many options to get the answer, just choose. :)
kearsten
  • kearsten
you guys are confusing me. im suupposed to be learning factoring
anonymous
  • anonymous
|dw:1438901621986:dw|
anonymous
  • anonymous
That's what I said. You factor the trinomial.
anonymous
  • anonymous
(t-1)(t+8) = t^2 +7t -8
kearsten
  • kearsten
is that the answer? or is there more simplifying
anonymous
  • anonymous
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
kearsten
  • kearsten
but im supposed to find the width not the length
anonymous
  • anonymous
soory, I meant t-1 is the width, you were given the length
kearsten
  • kearsten
that makes more sense thanks for your help
anonymous
  • anonymous
You are very welcome kerarsten, sorry for the confusion!
kearsten
  • kearsten
np lol

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