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Yakvenalex [24]
3 years ago
9

Can someone help? 25 points

Mathematics
2 answers:
zavuch27 [327]3 years ago
6 0

Answer:

x= 156

Step-by-step explanation:

i had a test with the same question, i promise its right :)

Vadim26 [7]3 years ago
6 0

Answer:

39

Step-by-step explanation:

taking triangle ABC with one angle x other angle b andc

also takin triangle acd

angle c=72 (as the sum of two interior angles=C[cis exterior angle of acd])

angle B=69(180-111[linear pair])

angle x=180-(72+69)

=39

this is correct

plz mark me brainliest

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This is a polygon and I need help finding the missing angle ?
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The unnumbered angle is 109 degrees. We know this because the angle labeled 71 degrees and the unnumbered angle are supplementary. So you subtract 180 from 71 to get 109. 
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To solve for x, we need to realize the other numbers playing into the angles' values. To make solving this easier, I'm gonna assign letters to the angles. 

(10x+6) is angle A. 

(13x-2) is angle B. 

(8x-1) is angle C.

and 109 (the one we solved) is angle D. 

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Now, we have to subtract the 6 from angle A from 363, because the 6 is added to the other values. 
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That equals 8. So now that you know that x equals 8, if you need to find the values of the angles, you just plug in the numbers into the formulas. 

(10(8))+6= 86
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109

Check your work by plugging your answers in and seeing if they add up to 360. 
86+102+63+109=360

Which they should:)

So...
angle A= 86
angle B=102
angle C=63
angle D=109

and x=8



Hope this helped!!!
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Answer:

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Step-by-step explanation:

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prisoha [69]

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