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3 years ago

9

In the first round of a card game,niki scored 20 points.Then,she lost 10 point on one turn and am additional 25 points on her fi

nal turn.

1 answer:

KonstantinChe [14]3 years ago

4 0

Niki has 35 points now

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3 years ago

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4 years ago

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ivolga24 [154]

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3 years ago

Who is good at geometry that can help me?

lina2011 [118]

Answer: d. 3

Step-by-step explanation:

By the The intersecting chords theorem,

$x(x+3) = 2\times 9$

$\implies x^2+3x=18$

$\implies x^2+3x-18=0$

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or $\text{ if }x+6=0\implies x = -6$ ( can not possible)

Hence, x = 3

⇒ Option d is correct.

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3 years ago