Answer:
1/6
Step-by-step explanation:
hope this helped you!
Answer:
n = 15
Step-by-step explanation:
10 x 15 = 150.
<em>Hope this helps!</em>
Answer:

Step-by-step explanation:
Given,
Art electives = 3,
History electives = 4,
Computer electives = 5,
Total number of electives = 3 + 4 + 5 = 12,
Since, if a student chooses an art elective and a history elective,
So, the total combination of choosing an art elective and a history elective = 
Also, the total combination of choosing any 2 subjects out of 12 subjects = 
Hence, the probability that a student chooses an art elective and a history elective = 

Which is the required expression.
To solve this problem just do the following,
x+9=-12
-9 -9
x=-21
Check
-21+9=-12 = True
Hope this helps!=)
Answer:
answer is not
Step-by-step explanation:
clear sorry