olivia4428 olivia4428
  • 03-03-2019
  • Mathematics
contestada

can someone please help me with this?? i don’t know how to do it

can someone please help me with this i dont know how to do it class=

Respuesta :

wolf1728
wolf1728 wolf1728
  • 03-03-2019

Answer:

It states that Angle A = 3x   B = 3x + 10 and C = 4x -30

We know that A + B + C = 180

Therefore 3x + 3x + 10 + 4x -30 = 180

10x -20 = 180

10x = 200

Therefore, x = 20

Angle C is 4x -30  

= 4 * 20 -30

Angle C = 50

Answer is D

Step-by-step explanation:

Answer Link
ineedhelpetc
ineedhelpetc ineedhelpetc
  • 03-03-2019
Answer is D thanks !!!
Answer Link

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