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Nostrana [21]
3 years ago
11

Solve the following system of equations. In other words, which values for x and y make both equations true?

Mathematics
1 answer:
bulgar [2K]3 years ago
5 0
Substitute 4x for y and you get
3x+5(4x)=23
3x+20x=23
23x=23
x=1

y=4(1)
y=4
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vredina [299]

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7 0
3 years ago
What are the x intercepts of the quadratic function? Y=-x^2+2x-1
saw5 [17]

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x = 1

Step-by-step explanation:

Given in the question the equation

y = -x² + 2x - 1

To find the x-intercept, substitute in 0 for y

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To find value of x use quadratic equation

x = -b ± √b²-4ac / 2a

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x1 = -2 + √2²-4(-1)(-1) / 2(-1)

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x2 = -2 - √2²-4(-1)(-1) / 2(-1)

   = -2 - 0 / -2

   = -2 / -2

   = 1

8 0
3 years ago
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