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Darina [25.2K]
2 years ago
9

Find the value of x.

Mathematics
2 answers:
Snezhnost [94]2 years ago
6 0
X=19 hope this helps
tatiyna2 years ago
4 0

Answer:

x = 19

Step-by-step explanation:

(5x+4)+(x-2)+(3x+7) = 180

5x+4+x-2+3x+7 = 180

9x+9 = 180

9x = 171

x = 171/9

x = 19

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Answer:  x = 2 ;  -11 .
___________________________________
Explanation:
_____________________________________________
Given the equation:
_____________________________________________
  x² + 9x −<span> 22 = 0  ;  Solve for:  "x" ;
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Let us factor the "left-hand side" of the equation:
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  "x</span>² + 9x −<span> 22"  ;
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What are the factors of "-22"" that add up to "positive 9" ?
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  Let us list the factors of "-22" :
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-2, 11;  </span>→ -2 + 11 = 9 ;<span>
-11, 2;  </span>→ -11 + 2 = -9 ;<span>
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So we have:  "-2" and "11" ;
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So;   </span>  "x² + 9x − 22" ; factors into " (x−2)(x + 11)" ;
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We have:  (x−2)(x + 11) = 0 ;

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   x + 11 = 0 ;

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3 years ago
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