Answer:
i dont understand...the meaning?
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
The sum of  1.8 and 1.56 is 3.36 according to the model
Sum of decimals
Given the expression  1.8 + 1.56
Using the partial sum method
1.8 + 1.56 = (1.0 + 0.8) + (1.0+0.56)
Regroup as whole and decimal number
1.8 + 1.56 = (1.0 + 1.0) + (0.8 +0.56)
1.8 + 1.56 = 2.0 + 1.36
1.8 + 1.56 = 3.36
Hence the sum of  1.8 and 1.56 is 3.36 according to the model
 
        
             
        
        
        
Answer:
 -1 1/3 as a mixed number (if they ask for it in simplest form, choose this one)
-4/3 as an improper fraction
Step-by-step explanation:
1. Keep, change, flip
4/5 x -5/3
2. Cross cancel the fives
4/1 x -1/3
3. Simplify
-4/3 or -1 1/3 (they're equivalent) 
 
        
             
        
        
        
So fill out the coordinate with those given numbers, and count how far apart they are and you will get your answer. Then times it by x.
 
        
             
        
        
        
Answer:
okay so you would make a line straight across the middle of the spherical shape. The line that goes all the way across is the diameter. If you were to cut that line in half that would be the radius. 
Step-by-step explanation:
The first circle shown in the picture provided would be an example of diameter, and the second circle would be an example of the radius. You could just make up a value, for example say the diameter is 10, the radius would be 5.