5/12 - 4/5 = -23/60. You can't simplify -23/60. Hope this is right
 
        
             
        
        
        
Answer:
353 tickets. 
Step-by-step explanation:
Let's say that there are s student tickets and n nonstudent tickets. 
s + n = 669
5s + 8n = 4293
Multiply -5 by the entire first equation to get... 
-5s - 5n = -3345
Combine the two equations. 
5s - 5s + 8n - 5n = 4293 - 3345
3n = 948
n = 316
Now, put the number of nonstudent tickets sold back into the first equation. 
s + 316 = 669
s = 353 tickets. 
Hope this helps!
 
        
             
        
        
        
Answer:
You should use 0.6 cups of pineapple juice if you only have 1 cup of orange juice.
Step-by-step explanation:
With the information provided about the recipe, you can use a rule of three to find the cups of pineapple you should use if you only have 1 cup of orange juice given that the recipe calls for 30 cups of orange juice and 18 cups of pineapple juice:
30 cups of orange juice → 18 cups of pineapple juice
  1 cup of orange juice    →                    x
x=(1*18)/30=0.6 cups of pineapple juice
According to this, the answer is that you should use 0.6 cups of pineapple juice if you only have 1 cup of orange juice.
 
        
             
        
        
        
Answer: (7, -4)
Concept:
For each rotation angle, there is a specified rule that could be applied. Please refer to the attachment below for the list of rotation rules.
Solve:
Given point = (-7, 4)
Given rotation rule = (x , y) ⇒ (-x, -y)
(-7, 4) ⇒ (7, -4)
Hope this helps!! :)
Please let me know if you have any questions