Step-by-step explanation:
To find the formula for the nth term ,
First , find the common difference or common ratio.
Common difference = 

Common ratio = 

The common difference applies to the other given numbers for example :

this proves that it is an arithmetic sequence and the given formula for the nth term of an arithmetic sequence is
T_n =a(n-1)d
Where n = no of terms
a= first term
d= common difference
 
        
             
        
        
        
Therefore, ' 19 ' smaller lawn mover and '11' larger lawn mover were sold.
Step-by-step explanation:
Given:
let the smaller lawn mover be 'x'
let the larger lawn mower be 'y'
According to condition total mover will be
................( 1 )
and total cost will be given as
................( 2 )
To Find:
x =? and y =?
Solution:
Substituting equation 1 in equation 2 we get
Substituting ' y 'in ( 1 ) we get
        
             
        
        
        
Step-by-step explanation:
if the tank is filled with a cap on field to capacity how many half gallons of bottles are filled it will be about well first you have to think how much is half a gallon and it's a half of a gallon is 2 quarts how big is the tank that's what you want to know if you want to fill it up cuz I haven't gotten this 2 quarts tell me how big is the tank 
 
        
             
        
        
        
Answer:
3 / 4 * 50 = 150 / 4 
= 37.5 or 37½ yards
Step-by-step explanation:
 
        
             
        
        
        
Using  the 2nd row it traveled 120 miles in 3 hours
 so 120/3 = 40 miles per hour
so distance (d) = 40h