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lisov135 [29]
3 years ago
15

Whats 10+-6. is it16-44-16​

Mathematics
2 answers:
zaharov [31]3 years ago
5 0

Answer:

-16

Step-by-step explanation:

balandron [24]3 years ago
5 0
The answer is 4. Adding a negative number is the same as subtracting a positive number, so just think of it as 10-6.
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Which ordered pairs are solutions to the inequality 2x - y > -4? Check all that apply.
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Answer:

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Solve 2x2 + 20x = −38. (1 point)
RoseWind [281]

Answer:

The solutions are x=-5+\sqrt{6}  and x=-5-\sqrt{6}


Step-by-step explanation:

we have

2x^{2} +20x=-38

Divide by 2 both sides

x^{2} +10x=-19 ------> x^{2} +10x+19=0

we know that


The formula to solve a quadratic equation of the form ax^{2} +bx+c=0 is equal to


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substitute

x=\frac{-10(+/-)\sqrt{10^{2}-4(1)(19)}}{2(1)}


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x=\frac{-10(+/-)\sqrt{24}}{2}


x=\frac{-10(+/-)2\sqrt{6}}{2}


x1=\frac{-10(+)2\sqrt{6}}{2}=-5+\sqrt{6}


x2=\frac{-10(-)2\sqrt{6}}{2}=-5-\sqrt{6}


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