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Ivahew [28]
3 years ago
8

How many solutions does this system of linear equations have? Explain. 1= 2 =1+3 2

Mathematics
1 answer:
Neporo4naja [7]3 years ago
8 0

Answer: There are no real solutions.

Step-by-step explanation:

We have the equation:

x = y^2

y = x + 3/2

To solve this, we can start by noticing that x is already isolated in the first equation, then we can replace it in the second equation to get:

y = y^2 + 3/2

And now we can rewrite this as:

y^2 - y + 3/2 = 0

This is a quadratic equation, and the solutions can be calculated with Bhaskara's equation, the solutions are:

y = \frac{-(-1) +- \sqrt{(-1)^2 - 4*3/2*1} }{2*1} = \frac{1 + \sqrt{-5} }{2}

We have a negative number inside the square root, this means that the solutions are complex numbers.

Then we can conclude that the system of equations has no real solutions.

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Determine which point is the solution to the given system.
KatRina [158]

Answer:

D

Step-by-step explanation:

We equate both the y's and solve for x algebraically:

-\frac{4}{7}x+16=-\frac{2}{7}x+12\\16-12=-\frac{2}{7}x+\frac{4}{7}x\\4=\frac{2}{7}x\\x=\frac{4}{\frac{2}{7}}\\x=14

Now taking the value x= 14 and putting it in the 1st equation would give us y:

y=-\frac{4}{7}x+16\\y=-\frac{4}{7}(14)+16\\y=8

Hence the solution is (14,8), answer is D

7 0
4 years ago
Someone solve this quick please
Dmitriy789 [7]

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so its 2n^2

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8 0
3 years ago
Who knows the x and y values of<br> x+5y=-12<br> 5x+4y=24
musickatia [10]
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Now you plug in y back into either equation and you get x=8
7 0
3 years ago
What is the y-intercept of the line shown? A. 2 B. -2 C. 4 D. -4
kramer

The y-intercept will be where it crosses the y-axis. The y-axis is the line that goes up and down also know a vertically.

5 0
3 years ago
The sum of 13 and twice a number and is it linear
nikklg [1K]

Answer:

Step-by-step explanation:

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3 0
3 years ago
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