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Ipatiy [6.2K]
3 years ago
6

Please help. Screenshot attachedn

Mathematics
1 answer:
NARA [144]3 years ago
8 0

Answer:

x = -0.17   and    x = -5.83

Step-by-step explanation:

We are asked to solve the quadratic equation

x^2+6\,x+1=0

We use the quadratic formula using a = 1, b = 6 and c = 1

for a general quadratic equation of the form: ax^2+bx+c=0

Then, the solutions are given by;

x=\frac{-6+/-\sqrt{36-4\,(1)\,(1)} }{2} =\frac{-6+/-\sqrt{32} }{2}

which produces the two following answers (rounded to two decimals):

x = -0.17   and    x = -5.83

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The frequency of D3 is 146.83 Hz. What is the frequency of D5, which is two octaves above D3?
Vaselesa [24]

Answer: D

Frequency = 587.32 Hz

Step-by-step explanation:

One octave above has a frequency of 2 × 146.83 Hz = 293.66Hz (D4). Two octaves above has afrequency of 2 × 293.66 Hz = 587.32 Hz (D5)

5 0
3 years ago
Can somebody help me on this one? Plz
QveST [7]

Answer:

y is at most than -8

Step-by-step explanation:

Step 1) You multiply -2 on both sides to get y by itself.

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3 years ago
Determine on the argand diagram (4 + 2i) + (-2 + 3i) - (-1 + 6i)​
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6 0
3 years ago
Which of the following is the solution set of 18 - 3n + 2 = n + 20 - 4n?
exis [7]

The solution set of the equation is all reals ⇒ 3rd answer

Step-by-step explanation:

The solution set of an function is the set of all vales make the equation true. The equation has:

  • Solution if the left hand side is equal to the right hand side
  • No solution if the left hand side doesn't equal the right hand side

∵ The equation is 18 - 3n + 2 = n + 20 - 4n

- Add the like terms in each side

∴ (18 + 2) - 3n = (n - 4n) + 20

∴ 20 - 3n = -3n + 20

- Add 3n to both sides

∴ 20 = 20

In the equation of one variable, when we solve it if the variable is disappeared from the two sides, and the two sides of the equations are equal, then the variable can be any real numbers, if the two sides are not equal, then the variable couldn't be any value

∵ The the variable n is disappeared

∵ The left hand side = the right hand side

∴ n can be any real number

∴ The solution set of the equation is all real numbers

The solution set of the equation is all reals

Learn more:

You can learn more about the equations in brainly.com/question/11229113

#Learnwithbrainly

8 0
3 years ago
Read 2 more answers
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-BARSIC- [3]
Subtracting 10x from the given equation gives
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Then dividing by 15 gives
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Zorah will have to play 8 hours in order to break even (cover her expenses exactly).
8 0
3 years ago
Read 2 more answers
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