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aleksandr82 [10.1K]
3 years ago
6

I have been stuck on the problem for so long. please help me:

Mathematics
1 answer:
Xelga [282]3 years ago
6 0

Answer:

D-2

Step-by-step explanation:

You can use elimination to get the value of y. Move numbers to one side and x and ys to the other side. To use elimination, multiply the first equation with 2. You will get 2x+2y=24. add it with the equation below. y will be eliminated and you will get the value of x. X=10. Plug in x and get the y value. Y=2

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5x2 + 5x + 8 = 0 ?<br> What is the complex solution to the quadratic equation
emmainna [20.7K]

Answer:

\frac{-1+135i}{2}, \frac{-1-135i}{2}

Step-by-step explanation:

you use the quadratic equation:  (-b ± \sqrt{b2 - 4ac}) ÷ 2a

in this case, a = 5, b = 5, c = 8

inside the radical will be -135, hence using 135i where 'i' equals -1

3 0
3 years ago
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Answer:

C (if the sign after the digit 1,2,3,4 is not minus !!!)

Step-by-step explanation:

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