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Nastasia [14]
3 years ago
9

Use the discriminant to describe the roots of each equation. Then select the best description.

Mathematics
1 answer:
zhuklara [117]3 years ago
6 0
◆ QUADRATIC RESOLUTIONS ◆

given \:  \: equation \:  \:  -  \\ \\   3 {x}^{2}  +7x - 2 = 0 \\  \\ here \: a = 3 \: \:  , \:  \: b = 7  \: , \:  \: c =  - 2 \\  therefore  \:  \: , \\ discriminant \:  =  {b}^{2}  - 4ac = 7 3 \\  \\  using \: quadratic \: formula \:  \: , \\  \\ x =  \frac{ - b +  \sqrt{d} }{2a}  =   \frac{ - 7 +  \sqrt{73} }{6}   \:  \:  \:  \:  \: ans.\\  \\ also \: \:  , \\  \\ x =  \frac{ - b  -   \sqrt{d} }{2a}  =   \frac{ - 7  -  \sqrt{73} }{6} \:  \:  \:  \:  \:  \: ans.
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PLEASE HELP!!! <br> find the length of arc LN. Round to the nearest hundredth.<br> SHOW WORK....
patriot [66]

9514 1404 393

Answer:

  15.71 units

Step-by-step explanation:

The arc length is given by the formula ...

  s = rθ

where r represents the radius, and θ represents the central angle in radians.

The angle of 60° is π/3 radians, so the arc length is ...

  s = 15(π/3) = 5π ≈ 15.71 . . . units

  LN ≈ 15.71 units

__

<em>Note</em>: if you use 3.14 for π, you will get 15.70.

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3 years ago
A number to the 8th power divided by the same number to the 5th power equals 27. What is the number?
Yuliya22 [10]

x^8/x^5=27

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7 0
3 years ago
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6x + 14 = 20<br> Show your work <br> Solve the equation
DIA [1.3K]

Answer:

X = 1

Step-by-step explanation:

subtract 14 from both sides

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5 0
3 years ago
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kupik [55]

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2 years ago
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Which of the following are solutions to the equation below?
barxatty [35]

Answer:

x = 3 ± sqrt(11)

Step-by-step explanation:

x^2 - 6x + 9 = 11

Recognizing  that this is a perfect square trinomial

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Add 3 to each side

x = 3 ± sqrt(11)

5 0
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