Answer:
<u>8</u><u>t</u><u>h</u><u> </u><u>term</u><u> </u><u>is</u><u> </u><u>-</u><u>1</u><u>5</u><u>3</u><u>0</u><u>9</u>
Step-by-step explanation:

r is the common difference, r = -21/7 = -3
 
        
                    
             
        
        
        
What is:
k/3 + 17 = 12?
k = -15
        
                    
             
        
        
        
The perimeter of the park is 3x^2 + 37x - 4
<h3>How to determine the perimeter?</h3>
The side lengths of the triangular park are:
10x + 3x^2 - 8, 12x and 15x + 4
Add these sides to determine the perimeter
P = 10x + 3x^2 - 8 + 12x + 15x + 4
Collect the like terms
P = 3x^2 + 10x + 12x + 15x - 8 + 4
Evaluate the sum
P = 3x^2 + 37x - 4
Hence, the perimeter of the park is 3x^2 + 37x - 4
Read more about perimeter at:
brainly.com/question/24571594
#SPJ1
 
        
             
        
        
        
Answer:
3
Step-by-step explanation:
3-2= 1
1*18=18
1+5=6
18/6=3
 
        
                    
             
        
        
        
minus 6
Step-by-step explanation:
From 49 to 43 you minus 6
from 43 to 37 you minus 6
Please give me brainliest!