1.  this is a series of squares  Formula is an = n^2
2. Arithmetic series with common difference d = -2.
an = a1 + (n-1)d  = 3 -2(n-1)
Cant see the rule for Number 3
        
             
        
        
        
Step-by-step explanation:
2x+98=180° (angles in straight line )
2x=180-98
x=2/2
x=1
 
        
                    
             
        
        
        
The greatest common factor( GCF) of 36 and 84 is 12.
        
             
        
        
        
I believe the answer is b
        
             
        
        
        
Answer:
41.666 cm³ or 41.7 cm³  rounded to the nearest tenth.
Step-by-step explanation:
Volume of a square pyramid = base length² × height ÷ 3
25 × 5/3 = 41. 666
Have a great day:)