178k views
2 votes
Super confused! Please help! Explanation would be amazing, thanks! :)

Super confused! Please help! Explanation would be amazing, thanks! :)-example-1
User Midstack
by
8.5k points

2 Answers

3 votes

Answer:

A = 29°

Explanation:

set

(3x-4) + (9x+17) + (6x-31) = 180

Solve for x

18x - 18= 180

18x = 198

x = 11

So A will be

A = 3x - 4

A = 3(11) - 4

A = 29°

User Zach Lucas
by
8.1k points
5 votes

Answer:

116°

Explanation:

total angle of a triangle: 180°

thus, (3x-4)+(9x+17)+(6x-31)= 180°.

3x-4+9x+17+6x-31= 180°

18x-18= 180°

18x= 198°

x= 198°/18

x= 11°

angle of A: (9x+17)°

9(11)+17= 99+17

= 116°

User Sandra Willford
by
8.4k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories