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Angelina_Jolie [31]
3 years ago
7

If a quadratic equation has 4-i as a solution, what must the other solution be?

Mathematics
1 answer:
Luden [163]3 years ago
6 0

Answer:

4+i

Step-by-step explanation:

A complex number usually took the form a+bi where a and b are real numbers and 'i' represents an imaginary number. For a quadratic equation, the complex roots for the root of a quadratic equation took the form known as complex conjugates. The complex conjugates are formed by changing the sign of the imaginary part.

SO, if a quadratic equation has 4-i as a solution, the other solution must be 4+i.

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Mary saw a bottle of shampoo that cost $7.75 and a bottle of conditioner that cost $5.90.
Marizza181 [45]

Answer:

$1.85

Step-by-step explanation:

$7.75 is $1.85 greater then $5.90

5 0
3 years ago
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A decimal that is equivalent to 188/11
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Solve the system of linear equations by substitution
elena-s [515]
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Check: (by plugging it into the equation)
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 YOUR ANSWER IS:
(2, -2)

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7 0
3 years ago
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Can I get some help help with 12,13 please
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7 0
4 years ago
If you start with a number, add 5, then multiply by 7, the result is 133. what was the original number
sergeinik [125]
The original number was:  " 14 " .

____________________________________
 a + 5 = b ;

 b * 7 = 133 .
______________________________________________
What is:  "a" ?
______________________________________________
133 / 7 = 19 = b ;

a + 5 = b = 19 ;

a + 5 = 19 ;

Subtract "5" from each side of the equation;
to isolate "a" on one side of the equation; and to solve for "a" ;
_______________________________________________
    a + 5 − 5 = 19 − 5  ;

to get:
________________________________________________
             a = 14  .
________________________________________________
 Let us check our answer:

Start with "14" ;

Add "5" :   "14 + 5 = 19 " .
______________________
then multiply by "7" :  "19 * 7"
__________________________
and the result is: 133 ?
__________________________
   19 * 7 = ? 133 ? Yes!
__________________________
5 0
3 years ago
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