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sergeinik [125]

3 years ago

7

If 12x – 20 = 10x + 20 what is the value of 3x ?

1 answer:

Bess [88]3 years ago

6 0

Answer: 3x=60

Step-by-step explanation:

12x-20=10x+20

X=20

3(20)= 60

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Naddik [55]

Check the picture below.

$\bf 0=AB^2+6AB-121\implies \stackrel{\textit{using the quadratic formula}}{AB=\cfrac{-6 \pm \sqrt{6^2-4(1)(-121)}}{2(1)}}
\\\\\\
AB=\cfrac{-6 \pm \sqrt{520}}{2}\implies AB=\cfrac{-6 \pm \sqrt{4\cdot 130}}{2}
\\\\\\
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-3-\sqrt{130}
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Andrej [43]

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