catherinegray690 catherinegray690
  • 21-04-2021
  • Mathematics
contestada

12. If DH = HE, MBG = (9x – 20) and
MGC = (5x + 28), find mAB.

Respuesta :

abidemiokin
abidemiokin abidemiokin
  • 27-04-2021

Answer:

176degrees

Step-by-step explanation:

Find the diagram attached. From the diagram;

arcGC  = = arc BG

5x + 28 = 9x - 20

5x - 9x = -20  28

-4x = -48

x = -48/-4

x = 12

Get <AB

Since <AB = <BC

<BC = arcGC +arc BG

<AB = arcGC+ arc BG

<AB = 5x + 28 + 9x - 20

<AB = 14x + 8

<AB = 14(12) + 8

<AB = 168 + 8

<AB = 176degrees

Hence the arc AB is 176degrees

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