Calcium carbonate decomposes at 1200° C to form carbon
2 answers:
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Answer: Option C.
Step-by-step explanation:
Let as consider the complete question is same as question shown in the below figure.
In the figure m║n.
If a transversal line intersect two parallel lines then same sided interior angles are supplementary angles and their sum is 180 degrees.
Divide both sides by 4.
The value of x is 45 degrees.
Therefore, the correct option is C.
