alexisminime2006
alexisminime2006 alexisminime2006
  • 10-03-2020
  • Mathematics
contestada

please help thanks:)))))))))))))​

please help thanks class=

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kaylaunie kaylaunie
  • 10-03-2020
B) 40, knowing that DCA is 155 is helpful because then you can figure out angle C. 180-155 is equal to 25. Then, 115+25= 140. 180-140= 40
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tranductai29122005 tranductai29122005
  • 10-03-2020

Answer:

B). 40

Step-by-step explanation:

m<ACB = 180 - m<DCA

            = 180 - 155

            = 25

m<B = 180 - m<ACB - m<A

       = 180 - 25 - 115

       = 40

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