63 or 90 is your answer, I think
        
             
        
        
        
Answer:
The number of protons
Step-by-step explanation:
Its the correct answer 
 
        
             
        
        
        
Answer:
Below.
Step-by-step explanation:
You can use any 4 x values, so we could have:
- 2  0  2  4
Now find the corresponding y values by substitution in the equation:
For x = -2, y = 1/2 *-2 + 2 = 1.
For x = 0, y = 1/2 * 0 + 2 = 2.
For x = 2 , y = 1/2* 2 + 2 = 3.
For x =  4 , y = 1/2 * 4 + 2 = 4.
So the table is:
-2   0    2   4
 1    2    3   4
You then plot the points (-2, 1), (0, 2), (2, 3) AND (4, 4) on the grid  and draw a line through them The graph will be a straight line.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Pythagorean theorem:
x² + x² = (9√2)²
2x² = 162
x² = 81
x = 9
 
        
             
        
        
        
Answer:
first y then x because y represents 22 and x represents 4 a week.