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Artyom0805 [142]
3 years ago
8

How do you solve x-3=6

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
5 0

x-3=6

Add + 3 to both sides

x=6+3

x=9

9-3=6

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What are the coordinates of the vertex of the parabola with the equation y = x + 2x - 3?
loris [4]

Answer:

<em>The coordinates of the vertex are (-1,-4).</em>

Step-by-step explanation:

<u>Equation of the Quadratic Function </u>

The vertex form of the quadratic function has the following equation:

y-k=a(x-h)^2

Where (h, k) is the vertex of the parabola that results when plotting the function, and a is a coefficient different from zero.

We are given the function:

y=x^2+2x-3

We must transform the equation above by completing squares:

The first two terms can be completed to be the square of a binomial. Recall the identity:

x^2+2xy+y^2=(x+y)^2

Thus if we add and subtract 1:

y=(x^2+2x+1)-3-1

Operating:

y=(x^2+2x+1)-4

The trinomial in parentheses is a perfect square:

y=(x+1)^2-4

Adding 4:

y+4=(x+1)^2

Comparing with the vertex form of the quadratic function, we have the vertex (-1,-4).

The coordinates of the vertex are (-1,-4).

4 0
2 years ago
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scZoUnD [109]
<h3>Answer: B) 30</h3>

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2 years ago
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Fed [463]
I think the answer might be B. $4,754.60 but I'm not sure. Sorry
7 0
3 years ago
Hi My question is what is 12% of 21
vfiekz [6]

Answer:

2.52

Step-by-step explanation:

21*.12=

2.52

5 0
3 years ago
What is the solution <br> to 1/2n+3=6
Alona [7]

n in (-oo:+oo)

(1/2)*n-3 = 6 // - 6

(1/2)*n-6-3 = 0

1/2*n-9 = 0 // + 9

1/2*n = 9 // : 1/2

n = 9/1/2

n = 18

n = 18

5 0
3 years ago
Read 2 more answers
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