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ICE Princess25 [194]
3 years ago
7

Natalie has a 15-pound yellow dumbbell. It is 3 times at heavy as the red dumbbell she has. How many pounds is the red dumbbell?

Mathematics
1 answer:
V125BC [204]3 years ago
7 0
5 pounds is the red dumbbell
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Please help me with this one.​
Degger [83]

Answer:

  2x^2 -x +1 = 0

Step-by-step explanation:

For roots α and β, the original equation can be factored as ...

  f(x) = 2(x -α)(x -β)

If we add 1 to each of those roots, the factors become ...

  g(x) = 2(x -(α+1))(x -(β+1))

This can be rearranged to be ...

  g(x) = 2((x -1) -α)((x -1) -β)

That is, we can get the desired equation by replacing x with x-1, effectively shifting the function right one unit.

  2(x -1)² +3(x -1) +2 = 0

  2x^2 -x +1 = 0

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Step-by-step explanation:

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