summerkoegel
summerkoegel summerkoegel
  • 02-10-2018
  • Mathematics
contestada

help me please????????

help me please class=

Respuesta :

poofpoof
poofpoof poofpoof
  • 02-10-2018

1) G=140º - angles on a straight line add to 180, H=140º - corresponding angles are congruent

2) set up the equation, since co-interior angles add to 180º the equation should be: x+40+3x+60

add like terms

4x+100=180

subtract 100

4x=80

divide by 4

x=20

3. the angles given are alternate angles meaning they are congruent, set up and equation: 3x-10=7x-42

add like terms

-4x=52

divide by 4

x=-13

To find angle DHG input the answer into the angles equation

7(13)-42

91-42

49

DHG=49º


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