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Alenkinab [10]
2 years ago
15

Given the parallelogram

Mathematics
1 answer:
Mashutka [201]2 years ago
4 0

Answer: 55.

Step-by-step explanation:R = 55. You put all the angles equal to 180 and then get the variable by itself.

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6x^2 - 54          6(x^2 - 9)          6(x + 3)(x - 3)        6(x - 3)
--------------  =    -------------     =  ------------------  =  ------------
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