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3 years ago

P L E A S E H E L P What is the value of x? thanks!

Mathematics

2 answers:

yKpoI14uk [10]3 years ago

7 0

Answer:

x = 21

Step-by-step explanation:

Sum of interior angles in a triangle = 180

3x + x -4 + 100 = 180

4x + 96 = 180

4x = 84

x = 21

SashulF [63]3 years ago

6 0

Answer:

x = 21

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 given angles and equate to 180

3x + 100 + x - 4 = 180 ← simplify the left side

4x + 96 = 180 ( subtract 96 from both sides )

4x = 84 ( divide both sides by 4 )

x = 21

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