joseeeparocua20 joseeeparocua20
  • 12-12-2020
  • Mathematics
contestada

Please help I’ll mark you brainlist

Please help Ill mark you brainlist class=

Respuesta :

jimrgrant1 jimrgrant1
  • 12-12-2020

Answer:

∠ MDF = 39°

Step-by-step explanation:

∠ MDH = 90°, so

∠ MDF + ∠ FDH = 90 , substitute values

2r + 59 + 6r + 111 = 90 , that is

8r + 170 = 90 ( subtract 170 from both sides )

8r = - 80 ( divide both sides by 8 )

r = - 10

Thus

∠ MDF = 2r + 59 = 2(- 10) + 59 = - 20 + 59 = 39°

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