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Marizza181 [45]
4 years ago
13

PLEASE ANSWER + BRAINLIEST!!!

Mathematics
1 answer:
Arada [10]4 years ago
5 0
Very simple

? – (20 – 4x – 5x2) = 20 – 7x2, so ?  = 20 – 7x2 <span>+ (20 – 4x – 5x2)
</span>?  = 20 – 7x2 <span>+ (20 – 4x – 5x2)=20-7x²+20-4x-5x²=40-12x²-4x
</span>the answer is <span>C. 40-4x-12x^2</span>
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Answer: x = 6, Angle ABC = 45, Angle DBC = 34

Step-by-step explanation:

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Angle DBC = 34

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