Answer:
22
Step-by-step explanation:
198 = 2×3²×11
For 198n to be a perfect square, each prime factor must have an even exponent.  So the smallest 198n would be:
198n = 2²×3²×11²
198n = 4356
n = 22
 
        
             
        
        
        
Answer:
D
Step-by-step explanation:
I have answers to whole packet:
1.D
2.A
3.C
4.D
5.C
6.D
7.A
8.C
9.A
10.B
11.A
12.A
13.A
14.B
15.A
16.B
17.A
18.A
19.B
20.C
21.A
22.A
23.D
24.B
 
        
             
        
        
        
7.3 is the range
Step-by-step explanation:
The range of a set of data is the difference between the largest and smallest values. 
 
        
             
        
        
        
Answer:
rhombus
Step-by-step explanation:
Rhombus has that equiangular and is equilateral but I'm not entirely sure about this...