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umka21 [38]
3 years ago
10

What are the solutions of this equation? 2x = x2 - 4

Mathematics
1 answer:
lilavasa [31]3 years ago
7 0

Answer:

Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

Exact Form:

x=1+√5 ,1−√5

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A textbook search committee is considering 13 books for possible adoption. The committee has decided to select 3 of the 13 for f
laiz [17]

Number of ways in which the 3 can be selected from 13  = 286

Step-by-step explanation:

Step 1:

Number of books considered by the textbook search committee = 13

Number of books selected from this 13 = 3

We need to determine number of ways in which the 3 can be selected from the 13

Step 2 :

The order of the 3 books selected does not matter. So,

Number of ways in which the 3 books can be selected from 13 books =  C(13,3) = \frac{13!}{10! . 3!}

                                                                                             =\frac{ 13 . 12 .11  . 10!}{10! . 3! }

                                                                                             =\frac{1716}{6} = 286

Step 3 :

Answer :

Number of ways in which the 3 can be selected from 13  = 286

                                                                 

8 0
3 years ago
Help please............
liubo4ka [24]
The answer is A because it is the result of breaking down the current equations
3 0
4 years ago
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4 0
3 years ago
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Levart [38]
Use an online converter that you may search for on google. com, and learn the method too
3 0
4 years ago
Read 2 more answers
Evaluate if x =3 and y = -2<br><br> x2+2xy−4y
Marysya12 [62]

Answer:

5

Step-by-step explanation:

With the equation x^2 + 2xy - 4y, we can substitute the values of x = 3 and y = -2 into the equation to find its result.

(3^2) + (2\cdot3\cdot-2) - (4\cdot-2)\\\\9 + (6\cdot-2) - (-8)\\9 - 12 + 8\\5

Hope this helped!

8 0
4 years ago
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