ocplugg1503
ocplugg1503 ocplugg1503
  • 25-03-2021
  • Mathematics
contestada

i have to solve for ABC n round to nearest whole number​

i have to solve for ABC n round to nearest whole number class=

Respuesta :

tman160429
tman160429 tman160429
  • 25-03-2021

Answer:

∠B

7(13)-1=90˚

Step-by-step explanation:

Are you saying ∠ABC or ABC as sides?

1. ∠ABC

(7x-1)+(4x+1)+(3x-2)=180˚

14x-2=180˚

14x=182

x=182/14

x=13˚

2. plug in

∠A

4(13)+1=53˚

∠B

7(13)-1=90˚

∠C

3(13)-2=37˚

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