3 years ago

Need this answer please

1 answer:

3 0

B is the correct answer

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quester [9]

7/10 is the rational number :)

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4 years ago

enot [183]

Answer:

C Is the correct answer

I am not sure please check it out once

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3 years ago

qwelly [4]

Answer:
2789/36 is 77
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Step-by-step explanation:

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3 years ago

ICE Princess25 [194]

Answer:

it's 4

Step-by-step explanation:

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3 years ago

mixer [17]

We start with

$\dfrac{x}{x+4} = -\dfrac{9}{x+3}$

Assuming that $x \notin \{-4,\ -3\}$ we can cross multiply the equation:

$x(x+3) = -9(x+4) \iff x^2+3x=-9x-36 \iff x^2+12x+36=0$

You can recognize the perfect square pattern in the quadratic equation:

$x^2+12x+36 = (x)^2 + 2\cdot x \cdot 6 + (6)^2 = (x+6)^2$

So, we have

$x^2+12x+36=0 \iff (x+6)^2 = 0 \iff x+6=0 \iff x=-6$

Which is the only solution, with multiplicity 2.

8 0

4 years ago