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vichka [17]
3 years ago
5

Find the value of x. A) 21 B) 27 C) 31 D) 34

Mathematics
2 answers:
Whitepunk [10]3 years ago
7 0
The answer is a, 21. 21x3 is 63. 63 + 1 = 64.
Likurg_2 [28]3 years ago
3 0

Answer: A) 21

Step-by-step explanation:

From the given figure, we can see that angles 64^{\circ} and (3x+1)^{\circ} are vertically opposite angles.

Since, vertically opposite angles are equal, therefore we have

64^{\circ}=(3x+1)^{\circ}\\\\\Rightarrow64=3x+1\\\\\text{Subtract 1 on both sides, we get}\\\\\Rightarrow3x=63\\\\\text{Divide 3 on both sides, we get}\\\\\Rightarrow x=21

Hence, the value of x = 21.

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