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Ostrovityanka [42]

3 years ago

9

If 9999 = 4, 8888 = 8, 1816 = 6, 1212 = 0, then 1919 =?

1 answer:

Morgarella [4.7K]3 years ago

4 0

Answer:

1919=0+1+0+1=2

Step-by-step explanation:

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4x + 2 = 2x - 20 what is x

lisabon 2012 [21]

Step-by-step explanation:

4x + 2 = 2x - 20

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2x=-22

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Ahat [919]

◆ QUADRATIC EQUATIONS ◆

$given \: equation \: is \: , \\ \\ {x}^{2} - 12x + 20 = 0 \\ \\ using \: quadratic \: formula \: , \\ \\ x = \frac{ - b + \sqrt{ {b}^{2} - 4ac } }{2a} \: \: \: \: = \frac{ - ( - 12) + \sqrt{ { (- 12)}^{2} - 4(1)(20) } }{2(1)} \\ \\ x = \frac{ - b + \sqrt{ {b}^{2} - 4ac } }{2a} \: \: \: \: = \frac{ - ( - 12) - \sqrt{ { (- 12)}^{2} - 4(1)(20) } }{2(1)} \\ \\ x = \frac{12 + 8}{2} \: \: \: \: \: or \: \: \: \: x = \frac{12 - 8}{2} \\ \\ x = 10 \: \: \: \: \: or \: \: \: \: \: x = 2 \: \: \: ans.$

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3 years ago