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myrzilka [38]
2 years ago
5

Solve 7/4=3/x to the nearest tenth

Mathematics
2 answers:
trapecia [35]2 years ago
6 0

uhhh idk just ask ur teacher hehe

Tema [17]2 years ago
4 0
7:3 = 4:X
3X = 7×4
28 / 3 = X
X = 9.3
X ≈ 9.5
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Answer:

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Step-by-step explanation:

We assume the middle term is supposed to be 4x.

We can remove a common factor of 4 to simplify this a bit.

  x^2 +x -5 = 0

This is of the form

  ax^2 +bx +c = 0

where a=1, b=1, c=-5.

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The <em>quadratic formula</em> gives the solutions as ...

  x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}

Filling in the given coefficients, we have ...

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The solutions are x = -1/2(1 +√21) and -1/2(1 -√21).

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<em>If what you wrote is what you intend</em>, then the equation simplifies to 4x^2 -16 = 0.

Dividing by 4 and factoring the difference of squares gives ...

  x^2 -4 = 0

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These factors are zero (hence their product is 0) for the values x = 2 and x = -2.

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Answer to question:

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