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Aleks04 [339]
3 years ago
7

Help please !!!!! Super hard

Mathematics
1 answer:
Keith_Richards [23]3 years ago
4 0
The image is really unclear but I will assume that the number of teams given = 66
and the formula is
n = \frac{ {t }^{2} - t }{2}
plug in the number of teams
66 = \frac{ {t}^{2} - t }{2}
multiply both sides by two
132 = {t}^{2} - t
subtract 132 from both sides and factor
t = 12
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Answer:

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Step-by-step explanation:

<u>Problem:</u>

Solve y=x2;y=−x−3

<u>Steps:</u>

I will solve your system by substitution.

y=1/2x;y=−x−3

Step: Solve y= 1/2x for y:

Step: Substitute 1/2 x for y in y=−x−3:

y=−x−3

1/2x= =−x−3

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3/2x = -3

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Step: Substitute −2 for x in y=1/2x:

y=1/2x

y=1/2(-2)

y=−1(Simplify both sides of the equation)

<u>Answer:</u>

x=−2 and y=−1

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