The answer is I believe: 21
The value of x in the triangle is (d) 7
<h3>How to solve for x?</h3>
The complete question is in the attached image.
From the attached image of the triangle, we can see that the triangle is a right triangle, and x can be solved using the following sine function

Evaluate sin(45)

Solve for x

Divide
x = 7
Hence, the value of x in the triangle is (d) 7
Read more about special triangles at:
brainly.com/question/654982
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Answer:
Can you show a picture of the diagram?
Answer:
−20x − 8
Step-by-step explanation: