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3 votes
Geometry and I need help

Geometry and I need help-example-1
User Shivaughn
by
7.1k points

2 Answers

2 votes
Y=11 is what i got not sure if it’s right
User Hannojg
by
8.4k points
6 votes

Answer:

y = 11

Explanation:

We use the definition of Supplementary Angles and Adjacent Angles.

Step 1: Set up equation 1 (Definition of Supplementary Angles)

5x - 4 +7x - 8 = 180

Step 2: Solve for x

12x - 4 - 8 = 180

12x - 12 = 180

12x = 192

x = 16

Step 3: Plug in x

5(16) - 4

80 - 4

76°

Step 4: Set up equation 2 (Definition of Supplementary Angles)

76 + 9y + 5 = 180

Step 5: Solve for y

9y + 81 = 180

9y = 99

y = 11

User ComFreek
by
8.5k points

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