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Natalija [7]
3 years ago
6

Which one is for inverse tangent?

Mathematics
2 answers:
ELEN [110]3 years ago
8 0

Answer:

A

Step-by-step explanation:

i looked at my chart

Elina [12.6K]3 years ago
6 0

Answer:

A

Step-by-step explanation:

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Which of the following is the complete list of roots for the polynomial function f (x) = (x2 + 6x + 8) (x2 + 6x + 13)?
Natali5045456 [20]

Answer:

-2, -4, -3 + 2i, -3-2i

Step-by-step explanation:

Equaling the function to zero we have:

(x ^ 2 + 6x + 8) (x ^ 2 + 6x + 13) = 0  

For the first parenthesis we have:

(x ^ 2 + 6x + 8) = 0\\(x + 4) (x + 2) = 0  

Therefore the roots are:

x = - 4\\x = - 2  

For the second parenthesis we have:

(x ^ 2 + 6x + 13) = 0  

By completing squares we have:

x ^ 2 + 6x = -13  

x ^ 2 + 6x + (\frac{6}{2}) ^ 2 = -13 + (\frac{6}{2}) ^ 2\\x ^ 2 + 6x + 9 = -13 + 9\\(x + 3) ^ 2 = - 4\\x + 3 = +/- \sqrt{-4}    

Therefore the roots are:

x = -3 + 2i\\x = -3 - 2i  

Hope this was helpful

6 0
3 years ago
Round to the nearest hundredth 0.633
spayn [35]
.63 i mean it is not that hard

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3 years ago
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Which of the following conditions does NOT create a triangle?
Elis [28]

Answer:

A triangle with three angles that each measure between 0º and 90º.

A triangle with one angle that measures between 90º and 180º.

A triangle containing a right angle.

3 0
3 years ago
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First person gets brainliest 4 <br><br> 45+9
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Answer:

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Step-by-step explanation:

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Write the equation of the line that is parallel to y = -2x - 9 and passes through the point (-2,-4).
Cloud [144]

Answer:  y=-2x-8

 

Step-by-step explanation:

Parallel lines need to have the same slopes but different y-intercept.

y=-2x -9 is parallel to y=-2x - 8

7 0
3 years ago
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