Answer:
 = 34.5
 = 34.5
Step-by-step explanation:
The n th term of an arithmetic sequence is
 = a₁ + (n - 1)d
 = a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Given  = 121.5, then
 = 121.5, then
a₁ + (69 × 1.5) = 121.5
a₁ + 103.5 = 121.5 ( subtract 103.5 from both sides )
a₁ = 18
Hence
 = 18 + (11 × 1.5) = 18 + 16.5 = 34.5
 = 18 + (11 × 1.5) = 18 + 16.5 = 34.5
 
        
                    
             
        
        
        
1. X = 4.5
2. X= 14 I’m not sure for 2 but number one is write
        
             
        
        
        
Answer:
 ( 2 , 2 )
Step-by-step explanation:
Solve the eqaution :
 3x +2y=10 
4x-y=6
Solve the eqaution for y :
 3x + 2y = 10
 y = -6 + 4x 
Substitute for y : 3x + 2 ( -6 + 4x ) = 10 
x = 10 
Substitute for the value of x : x = 2
Substitute the given value of x into the eqaution 
y = -6 + 4x : y = -6 + 4 × 2
Solve the eqaution: y = -6 + 4 × 2 
solve the eqaution for y : y = 2
y = 2 A possible solution : the ordered solution pair is
 ( 2 , 2 )
 
        
             
        
        
        
Answer:
C
Step-by-step explanation:
 
        
                    
             
        
        
        
4. C)If two figures are congruent, then they are similar.
 If they are congruent them shape and size are the same and hence they are similar 
5. Ratio 4/3 smaller side is 21 
Multiply to find large side 
4/3×21= 28ft D)
6. Width went from 24 to 3 in divide to get ratio
24/3 =8 now divide the length by 8 to find the postcard length 
32/8= 4 in A)
8. If they are similar you need to find the ratio y reduces from 8 is similar to 6 so link those 6/8
This is your ratio you can simplify it to 3/4 now y/6 should also = 3/4
Y/6=3/4
Y=18/4= 4.5 C)
9.C)DC