8-(8+48) = -48 then divide that by 8 and you get -6 as your result
        
             
        
        
        
Answer:
A u B = {3,5,6,7,8,11,12}
Step-by-step explanation:
A = {3,6,7,11}
B = {3,5,7,8,12}
A u B = {3,5,6,7,8,11,12}
 
        
             
        
        
        
Answer:
-10
Step-by-step explanation:
-(x-5) ^2+25
-x+5^2+25
 -5 -5
-x^2+20
-2x+20
---- ----
-2 -2
x=-10
// have a great day //
 
        
             
        
        
        
Answer:
 160 visitors.
Step-by-step explanation:
Given:
An average of 145 people visited a 4-day exhibition on the first 3 days, <u>means here average people visited in 3 days is given 145.</u>
Average = 145
Number of people, n = 3
Another 205 people visited the exhibition on the fourth day.
To find:
What is the average number of visitors per day ?
Solution:
<u>First of all we will find total number of people visited in 3 days:-</u>
As we know:


Multiplying both sides by 3

Thus, we found that total number of people visited in 3 days is 435 and as 205 people visited in fourth day, then total number of people increased to
435 + 205 = 640
Now, sum of total observations( total number of people ) = 640
And number of observation ( number of days ) = 4
Now, we will calculate average number of visitors visit per day :-

              
Thus, the average number of visitors per day is 160 visitors.
              
 
        
             
        
        
        
I think it is 9 1/2 feet.