macimac8807 macimac8807
  • 01-03-2021
  • Mathematics
contestada

6)
R
E 126
10x + 8
13 + 5x
D
A) 1
C) 5
B) 7
D) 14

6 R E 126 10x 8 13 5x D A 1 C 5 B 7 D 14 class=

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greenforestaz
greenforestaz greenforestaz
  • 01-03-2021

Step-by-step explanation:

step 1. what is the question? maybe the question is what is the value of x in the diagram. okay.

step 2. interior angles of a triangle add up to 180°

step 3. the 3 angles inside the triangle are 10x + 8, 13 + 5x, and (180 - 126)

step 4. (10x + 8) + (13 + 5x) + 54 = 180

step 5. 15x + 21 = 126

step 6. 15x = 105

step 7. x = 7.

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