azamm3551 azamm3551
  • 25-05-2021
  • Mathematics
contestada

7. Solve for x:
8. Find m

7 Solve for x 8 Find m class=

Respuesta :

spectrojamz
spectrojamz spectrojamz
  • 25-05-2021

Answer:

From Triangles...

The sum of two opposite interior angles = the exterior

so

3x-2 + 9x + 7 = 14x - 19

12x +5=14x -19

Collecting Like terms

2x= 24

x= 12°.

For "m"

Sum of angles in a triangle=180°

So

180 - (19x-3+9x-2) = m

180 -(28x -5) =m

m= 180 - 28x + 5

m=185 - 28x.

Now

Since sum of everything in a triangle = 180

185 - 28x + 9x -2 + 19x - 3 = 180

185 -28x + 28x -5= 180

185-5=180

180=180

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