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Sagot :
Answer:
2x = 84°
Step-by-step explanation:
the sum of the interior angles of a triangle is 180°
so
180 = 2x + x + 54
180 = 3x + 54
180 - 54 = 3x
126 = 3x
x = 126 : 3
x = 42°
------------------
2x = 42 * 2
2x = 84°
----------------
check
2x + x + 54 = 180
3x + 54 = 180
3 * 42 + 54 = 180
126 + 54 = 180
180 = 180
the answer is good
Answer:
84 Degrees
Step-by-step explanation:
Interior angles in a triangle sum to 180°
⇒ x + 2x + 54 = 180
⇒ 3x + 54 = 180
⇒ 3x = 180 - 54
⇒ 3x = 126
⇒ x = 126 ÷ 3
⇒ x = 42
Therefore:
⇒ 2x = 2(42)
= 84°
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