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Lorico [155]
2 years ago
14

In triangle ABC, what is m and B A. 30° B. 40° C. 75° D. 85°

Mathematics
2 answers:
Kay [80]2 years ago
7 0

Answer:

B B.......B........B......

masha68 [24]2 years ago
6 0

Answer:

B. 40

Step-by-step explanation:

Angle C is linear with ACD, so the 2 angles = 180 degrees. 180 - 155 = 25.

All 3 angles need to add to 180, so 115 + 25 + angle B = 180

140 + angle B = 180, so angle B is 40 degrees.

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Yakvenalex [24]

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Paul [167]

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1 year ago
4x²-y²=171 and 2x-y=9, value of 2x+y
11111nata11111 [884]
So you will need to solve for x and y before evaluating 2x+y....

2x-y=9, y=2x-9  now this will make 4x^2-y^2=171 become:

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