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alexandr402 [8]
3 years ago
11

Solve the following system. 1 v=()x2 + 2* 2 + 2x-1 and 3x-y=1

Mathematics
2 answers:
icang [17]3 years ago
8 0

Answer:

x = 1 + i, x = 1 - i

Step-by-step explanation:

Make the second equation y = 3x - 1

Substitute: 3x - 1 = 1/2x^2 + 2x

Simplify: 6x - 2 = x^2 + 4x

x^2 + 4x + 2 = 6x

x^2 - 2x + 2 = 0

Complete the square: x^2 - 2x + 1 = - 1

(x - 1)^2 = -1

x - 1 = ± √-1

Take out the negative: x - 1 = ± i

x = 1 + i, x = 1 - i

i is for imaginary number

joja [24]3 years ago
3 0

Answer: (0,-1) and (2,5) for the answers.

Step-by-step explanation:

Can someone please answer my question from my profile please thank you

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Step-by-step explanation:

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6 0
3 years ago
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Given f(x) and g(x) = k⋅f(x), use the graph to determine the value of k.
oksian1 [2.3K]

Answer:

-3 is the value of k in g(x)=kf(x)

Step-by-step explanation:

Both functions cross nicely at x=-3 so I'm going to plug in -3 for x:

g(x)=kf(x)

g(-3)=kf(-3)

To solve this for k we will need to find the values for both g(-3) and f(-3).

g(-3) means we want the y that corresponds to x=-3 on the curve/line of g.

g(-3)=-3

f(-3) means we want the y that corresponds to x=-3 on the curve/line of f.

f(-3)=1

So our equation becomes:

g(-3)=kf(-3)

-3=k(1)

-3=k

So k=-3.

8 0
3 years ago
20 POINTS!!!!!! Answer 1-16 Hurry no work just answer needed
Mamont248 [21]

1. Alternate angle

2. Alternate exterior angle

3. Corresponding angle

4. Vertical angle

5. Consecutive angle

6. Alternate exterior angle

7. x = 110°

8. x = 70°

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10. x = 130°

11. x = 53°

12. x = 60°

13. x = 30°

14. x = 65°

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6 0
3 years ago
Annie and him are taking turns driving on their trip. On one day they drove a total of 420 miles. Annie drove 3 times farther th
JulijaS [17]
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3 0
4 years ago
Help!! 20 points and brainly!!
sergejj [24]

Answer:

26

Step-by-step explanation:

Let x be the first even integer

x+2 is the second even integer

x+4  is the third even integer

The sum of three consecutive even integers is 84

x+ (x+2) + (x+4) =84

Combine like terms

3x +6 = 84

Subtract 6 from each side

3x+6-6 =84-6

3x =78

Divide each side by 3

3x/3 = 78/3

x =26

The three integers are 26, 28,30

The smallest is 26

5 0
4 years ago
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