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Snezhnost [94]
3 years ago
5

Find all solutions of the equation x^2 -2 x + 6 = 0 by completing the square. Express the soutions in the form a + b i:

Mathematics
1 answer:
Leto [7]3 years ago
3 0
x^2-2x+6=0\\
x^2-2x+1+5=0\\
(x-1)^2=-5\\
x-1=\sqrt{-5} \vee x-1=-\sqrt{-5}\\
x=1+5i \vee x=1-5i\\
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If you have the equation of different situations into y = mx + b, What do m and b represent?
alexandr1967 [171]

Answer:

C. m represents the slope and b represents the y-intercept.

Step-by-step explanation:

The equation of straight line is usually expressed as:

       y  = mx + b

Where y is the vertical axis component

           x is the horizontal axis component

           m is the slope

           b is the y-intercept

At the y-intercept, x = 0

Also, the slope is the rise divided by the run.  

8 0
3 years ago
For triangle xyz , the measures of angles x,y, and Z are known. Which method should be used to start solving triangle xyz?
Kisachek [45]

Neither the <u>laws of sines</u> nor the <u>law of cosines</u> can be used to solve the triangle. The correct option is the third option - neither law can be used

<h3>Solving trianngles using the laws of sines & cosines </h3>

The law of sines is written as

\frac{sinA}{a}=\frac{sinB}{b}= \frac{sinC}{c}

Where a,b, and c are sides of any given triangle and A,B, and C are the angles.

This law is used when we are given either

  1. Two angles and one side, or
  2. Two sides and a non-included angle

The law of cosines is written as

a² = b² + c² -2bc cosA, or

b² = a² + c² - 2ac cosB, or

c² = a² + b² -2ab cosC

Where a,b, and c are sides of any given triangle and A,B, and C are the angles.

This law is used when we are given either

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Now, for triangle xyz, which the measures of angles X,Y, and Z are known, neither law can be used to solve the triangle.

Hence, neither the <u>laws of sines</u> nor the <u>law of cosines</u> can be used to solve the triangle. The correct option is the third option - neither law can be used

Learn more on Solving triangles using the laws of sines & cosines here: brainly.com/question/22339733

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2 years ago
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gayaneshka [121]

Answer:

Last choice

D. Iliana will have $580.00, the most money for the bike.  

Step-by-step explanation:

I took the test and made sure that it's right.

4 0
3 years ago
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Please help me ill give brainliest
sertanlavr [38]

Answer: the third one

Step-by-step explanation:

7 0
3 years ago
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Help<br> A number is the sum of 12.4 and 23.79, decreased by 5.27. What is the number?
Rudik [331]

Answer:

Step-by-step explanation:

n=12.4+23.79-5.27

n=30.92

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