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omeli [17]
3 years ago
15

Two angles are supplementary. The first angle is equal to x, and the second angle is equal to 3x-12. The value of x is equal to

Mathematics
2 answers:
Ksenya-84 [330]3 years ago
7 0

Answer:

x = 48

Step-by-step explanation:

Supplementary angles sum to 180°

add the 2 angles and equate to 180

x + 3x - 12 = 180 ( add 12 to both sides )

4x = 192 ( divide both sides by 4 )

x = 48

mash [69]3 years ago
7 0
<h2>>> Answer </h2>

_________

\:

  • Triangle = 180

Soo :

x + 3x - 12 = 180

4x - 12 = 180

4x = 180 + 12

4x = 192

x = 192 ÷ 4

x = 48

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