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-BARSIC- [3]
2 years ago
9

What is the value of x in the equation 2x+3y=36y when y=6?

Mathematics
2 answers:
jonny [76]2 years ago
7 0

Answer:

y = 6 so

2x + 3y = 36y is equal to:

2x + 3*6 = 36*6

-> 2x + 18 = 216

We must now move 18 to the other side of the equation. As we do that, we also change it's sign to negative 18:

2x = 216 - 18

We simplify this

2x = 198

Now, that we got to this point, we know that 2x is equal to 198. To find x we must divide the both sides of the equation by two:

2x/2 = 198/2

And we get that

x = 99

Step-by-step explanation:

Murljashka [212]2 years ago
7 0

Answer:

x=99

Step-by-step explanation:

y = 6

2x+3y=36y

2x+3(6)=36(6)

2x+18=216

2x=216-18

2x=198

2x/2=198/2

x=99

hope it's helpful

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Describe the graph that would be used to solve the equation –x2 + 4 = x + 2 using a system of equations. How will you use the gr
gayaneshka [121]

Answer:

The solutions are (-2 , 0) and (1 , 3)

Step-by-step explanation:

∵ -x² + 4 = x + 2

* y = -x² + 4 ⇒ is quadratic represented by parabola

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 The x-coordinate of its vertex = -b/2a, where b is the

  coefficient of x and a is the coefficient of x²

∴ x = 0/2(-1) = 0

∴ The y-coordinate of the vertex = (0)² + 4 = 4

∴ The maximum point of the parabola is (0 , 4)

∵ -x² + 4 intersects x-axis at y = 0

∴ -x² + 4 = 0 ⇒ -x² = -4 ⇒ x² = 4

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∵ y = x + 2 represented by a line its slope = 1

  It intersects y-axis at 2

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∴ The parabola and the line intersect each other at

  x = -2 and y = 0

To find all the point of intersection between the 2 equations we will solve them as a system of equations

∵ y= -x² + 4  and y = x + 2

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* when x = 1 ⇒ y = 1 + 2 = 3 ⇒ (1 , 3)

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