3 years ago

Please help me with this question image attached

Mathematics

1 answer:

Mumz [18]3 years ago

8 0

Answer: (D) 9

Step-by-step explanation:

This is an isosceles triangle. Since the legs are congruent, then the base angles are congruent.

9x + 3 = 84

- 3 -3

9x = 81

÷9 ÷9

x = 9

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