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GarryVolchara [31]
3 years ago
11

Need help!!! I don't understand it..

Mathematics
1 answer:
JulsSmile [24]3 years ago
6 0
Okay so every triangle will have 3 angles that add to 180 degrees. You are given that A=65 which means that B + C will have to add to 115. You are given that B= (3x-10) and C=2x, plug this into B+C=115. So
3x-10+2x=115, isolate x, 5x=125, divide both sides by 5 and you get that x=25. This makes B=65, and C=50. Just to check, if you add these together you get 180 degrees.
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lidiya [134]

Answer:

parallelogram, quadrilateral

Step-by-step explanation:

a rectangle is a quadrilateral because it has 4 sides.

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4 0
2 years ago
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