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ehidna [41]
4 years ago
15

Rewrite the equation by completing the square. 4 x^2 +20 x +25 = 0

Mathematics
1 answer:
Sav [38]4 years ago
6 0

Answer:

x=-5/2

Step-by-step explanation:

4 x^2 +20 x +25 = 0

x^2+5x=-25/4

(b/2)^2=(5/2)^2

x^2+5x+25/4=0

(x+5/2)^2=0

x=-5/2

(Hope this helps)

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Answer:

15

Step-by-step explanation:

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Given:

The graph of a scatter plot.

To find:

The function that best fits the given points.

Solution:

From the given graph it is clear that the linear function is the best fit for the given points because the points lie on a straight line or near to it.

So, options B and C are incorrect because they represent exponential and quadratic function respectively.

Let as assume the two points on the graph are (0.80,-12.82) and (2,-12.79).

Using this two points, the equation of line is:

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y+12.82=\dfrac{-12.79+12.82}{2-0.80}(x-0.80)

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y=-12.84+0.025x

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5 0
3 years ago
A parent died and left an estate to four children. One inherited 1/2 of the estate, the second inherited 1/8, and the third inhe
Inessa [10]
1/2 is 4/8
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7 0
3 years ago
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Answer:

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4 0
3 years ago
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Sholpan [36]

Answer:

\large\boxed{\dfrac{7-x}{x-7}=-1}

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