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ICE Princess25 [194]
3 years ago
14

30 POINTS Solve by the linear combination method.

Mathematics
2 answers:
Bond [772]3 years ago
8 0
<span>4x – 5y = –18 (1st)
3x + 2y = –2   (2nd)

Multiply 1st equation by 2 and 2nd equation by 5

</span>4x – 5y = –18 (1st) (mul. 2)
3x + 2y = –2   (2nd) (mul. 5)

8x - 10y = - 36
15x + 10y = - 10
-----------------------add
23x = - 46
    x = -2

3x + 2y = –2
3(-2) + 2y = –2
-6 + 2y = -2
2y = 4
y = 2

(-2,2)

answer

<span>(–2, 2)</span>

Katen [24]3 years ago
6 0

Answer:

Step-by-step explanation:

Solve by the linear combination method.

   4x – 5y = –18

   3x + 2y = –2

i selected the incorrect answer and the correct answer is bellow.

Selected Answer:

Incorrect

(–2, 7)

Correct Answer:

Correct

(–2, 2)

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that means ~

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3 0
2 years ago
Solve the equation for x, where x is a real number (5 points): <br> -2x^2 + 6x + 4 = 5
olasank [31]
Subtract 5 to both sides so that the equation becomes -2x^2 + 6x - 1 = 0.
To find the solutions to this equation, we can apply the quadratic formula. This quadratic formula solves equations of the form ax^2 + bx + c = 0
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6 0
3 years ago
What are different ways to write 9(46) using distributive property?
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3 0
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Read 2 more answers
Is 7 a solutions to the compound inequality "-3 &lt; x &lt; 6 "
Angelina_Jolie [31]

7 cannot be the solution of compound inequality -3 < x < 6

Step-by-step explanation:

We need to find if  7 a solutions to the compound inequality -3 < x < 6

The compound inequality -3 < x < 6 states that the value of x can be greater than -3 but less than 6

Since 7 is greater than 6 so, 7 can't be the solution of compound inequality.

So, 7 cannot be the solution of compound inequality -3 < x < 6

Learn more about compound inequality at:

brainly.com/question/1465430

brainly.com/question/1858613

brainly.com/question/6703816

Keywords: compound inequality

#learnwithBrainly

4 0
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Together they are 27 calls per hour.
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So it'd take them 4.44444444 (recurring) hours to make 120 calls.
6 0
3 years ago
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