Answer:
The similarity is they are using tools to help them make the lines, but the differences are they are using different tools to make different lines. While 1 of the tools is similar to the other
Step-by-step explanation:
 
        
             
        
        
        
Answer:
643 R1 and how is 
Step-by-step explanation:0	6	4	3
5	3	2	1	6
−	0      
  3	2    
−	3	0    
    2	1  
  −	2	0  
      1	6
    −	1	5
        1
 
        
             
        
        
        
Answer:
$10
Step-by-step explanation:
Subtract the price of the keychain, $7, from the total to find the price of the 3 t-shirts:
$37 - $7 = $30
The 3 t-shirts cost a total of $30.
We assume all t-shirts have the same price.
price of 1 t-shirt = $30/3 = $10
Answer: $10
 
        
             
        
        
        
Answer and Step-by-step explanation: Spherical coordinate describes a location of a point in space: one distance (ρ) and two angles (Ф,θ).To transform cartesian coordinates into spherical coordinates:


For angle θ:
- If x > 0 and y > 0:  ; ;
- If x < 0:  ; ;
- If x > 0 and y < 0:  ; ;
Calculating:
a) (4,2,-4) 
 = 6
 = 6
 
 
 
 
For θ, choose 1st option:
 
 
  
 
b) (0,8,15)
 = 17
 = 17


The angle θ gives a tangent that doesn't exist. Analysing table of sine, cosine and tangent: θ = 
c) (√2,1,1)
 = 2
 = 2

 =
 = 

d) (−2√3,−2,3)
 = 5
 = 5

Since x < 0, use 2nd option:



Cilindrical coordinate describes a 3 dimension space: 2 distances (r and z) and 1 angle (θ). To express cartesian coordinates into cilindrical:

Angle θ is the same as spherical coordinate;
z = z
Calculating:
a) (4,2,-4)
 =
 = 

z = -4
b) (0, 8, 15)
 = 8
 = 8

z = 15
c) (√2,1,1)
 =
 = 

z = 1
d) (−2√3,−2,3)
 = 4
 = 4

z = 3 
 
        
             
        
        
        
8 maybe? I’m really not sure but I just did 5x1.6