2 years ago

Plz. Can anyone explain and tell the answer of this question.I promise I will mark it as brainliest Question.

Mathematics

1 answer:

Leto [7]2 years ago

6 0

Answer:

x = 15

y = 90

Step-by-step explanation:

Step 1: Find x

We use Definition of Supplementary Angles

9x + 3x = 180

12x = 180

x = 15

Step 2: Find y

All angles in a triangle add up to 180°

3(15) + 3(15) + y = 180

45 + 45 + y = 180

90 + y = 180

y = 90°

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