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V125BC [204]
3 years ago
6

I need help with this ASAP!!!!!

Mathematics
1 answer:
ICE Princess25 [194]3 years ago
5 0

Answer:

x=3

Step-by-step explanation:

∠DBC+∠VBC is 180° since it is a straight line, ∠VBC=20x+5

The sum of all angles in a triangle is 180°, 9x-2 + 40° +∠DBC=180°

To find x, you can find ∠DBC first.  *Don't forget BRACKETS

∠DBC=180-(20x+5)

∠DBC=180-(9x-2 + 40°)

Now equal the equations to each other to find x.

180-(20x+5)=180-(40+9x-2)

180-20x-5=180-40-9x+2

175-20x=142-9x

175-142=20x-9x

33=11x

x=33/11

∴x=3

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