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Nadusha1986 [10]
1 year ago
8

X − y = 12 x + 2y = 21

Mathematics
1 answer:
olga55 [171]1 year ago
5 0

Answer: x=15, y=3

Step-by-step explanation:

Subtracting the two equations, we get -3y=-9, meaning y=3.

Substituting this into the first equation, we get that x-3=12, and thus, x=15.

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In 1993, the sports league introduced a salary cap that limits the amount of money spent on players' salaries. The quadratic mod
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Answer:

1999

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verify with known data point

y  = 0.2313(2004 - 1992)^2 + 2.600(2004 - 1992) + 35.17

y  = 0.2313(12)^2 + 2.600(12) + 35.17

y  = 27.9873 + 28.6 + 35.17

y = 99.6772  which verifies our equation

65 = 0.2313x² + 2.6x + 35.17

 0 = 0.2313x² + 2.6x - 29.83

quadratic formula

x = (-2.6 ±√(2.6² - 4(0.2313)(-29.83))) / (2(0.2313))

x = (-2.6 + 5.86) / 0.4626 = 7.05 years

7.05 = y - 1992

y = 1999.05

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2 years ago
Does the area of a square vary with the side length?
Darina [25.2K]
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ABCD is parallelogram if angle D=32, then angle c=?
Nonamiya [84]
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