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ycow [4]
3 years ago
15

The angles in a triangle are represented by 5x, 8x, and 2x+9. What is the value of ?

Mathematics
2 answers:
Feliz [49]3 years ago
6 0

Answer:

11.4

Step-by-step explanation:

Add 5+8+2

You get 15

So 15x

Then subtract 9 from 180.

180 minus 9 is 171

Divide by 15

You get 11.4

Dominik [7]3 years ago
3 0

Answer:

B.11.4

Step-by-step explanation:

The sum the 3 angles of a triangle add to 180 degrees

5x+8x+2x+9 = 180

15x+9 =180

Subtract 9 from each side

15x+9-9 =180-9

15x = 171

Divide by 15

15x/15 =171/15

x =11.4

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