Should be markdown, but if you have other options let me know and I'll tell you which it is. But if markdown is one of your choices, or if this is fill-in, it's markdown.
Answer:
Division
Step-by-step explanation:
Certain Outcomes/Total Outcomes = Probability
The operation used is division
<h2>
The value of x "option A) 12.5" is required answer.</h2>
Step-by-step explanation:
In given figure,
Base (b) = 11 and Angle = 28°
To find, the value of x = ?
We know that,

Where, h is the hypotaneous = x
⇒ 
⇒ 
The value of
= 0.8829
⇒ x =
⇒ x = 12.458
⇒ x ≈ 12.5
∴ The value of x ≈ 12.5
Thus, the value of x "option A) 12.5" is required answer.
If you are trying to find x it is x=15-y