Answer:

Step-by-step explanation:
From the question we are told that:
Number of boys
Number of girls 
Total Number of students


Generally the equation for Probability of Choosing a Girl is mathematically given by



You would have to subtract both of them and you will get 9/10 stephens jump was further
Answer:
Undefined
Step-by-step explanation:
Its parallel to y-axis so the slope is undefined
By using the properties of parallel lines, it can be inferred that -
Corrosponding angle goes in the place of first question mark and substitution property of equality goes in the place of second question mark.
What are parallel lines?
Two lines are said to be parallel if on extending them indefinitely, they will never intersect
Transversal is a line that intersects two or more parallel lines
For the first question mark
[Corrosponding angle]
For the second question mark
[Substitution property of equality]
To learn more about parallel lines, refer to the link-
brainly.com/question/26961508
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Answer:
the answer to your question is
2n + 20