Let 

 be the number of hours that the waitress works in the evening.
We know for our problem that she works 

 in the afternoon and that she works <span>1.75 hours less in the afternoon than in the evening, so:
</span>

<span>Since </span>

, we can rewrite our expression:


We can conclude that she works 3.375 hours in the evening, or expressed as a mixed fraction: 

 hours.
 
        
        
        
The solution to this puzzle is 10+3 = 13
<h3>How to solve the puzzle</h3>
To solve this the values at the top of the star were gotten by the addition of two values inside the stars.
- 3 + 12 = 15
- 12 + 4 = 16
- 4 + 2 = 6
- 2 + 10 = 12
- 10 + 3 = 13
Therefore the answer to this question is 13.
Another way of getting the value is by adding 15 + 16 = 31
12 + 6 = 18
31-18 = 13
Read more on puzzles here
brainly.com/question/16999211
 
        
             
        
        
        
Answer: The rule is when rotating 90 degrees, it's (-y, x), 180 degrees is (-x, -y), and 360 degrees is (y,  -x). Just plug in the numbers accordingly, and you should get the correct answer. It worked for me <3.
 
        
             
        
        
        
Set up a ratio and solve for the missing value:

The couple rested for 45 minutes in 5 hours.
 
        
             
        
        
        
1, it is shifted 4 units up