Answer: 12.83
Explanation: 
The mean is the average of a data set. So, in order to find the mean, we have to add all he values and in this case, we got 77. Then we divide 77 by he number of values we have, which results in 12.83. Therefore, the mean of these numbers are 12.83.
        
             
        
        
        
Answer:
x = 1
Step-by-step explanation:
Given that y varies inversely as x then the equation relating them is
y =  ← k is the constant of variation
 ← k is the constant of variation
To find k use the condition y = 5 when x = 3
k = yx = 5 × 3 = 15, thus
y =  ← equation of variation
 ← equation of variation
When y = 15 then
15 =  ( multiply both sides by x )
 ( multiply both sides by x )
15x = 15 ( divide both sides by 15 )
x = 1
 
        
             
        
        
        
8 days because 4/5 = 8/10 and he is using 1/10 a day.
        
                    
             
        
        
        
Answer:
Part a) 
Part b) 
Step-by-step explanation:
Part 6) 
a) How much edging is needed?
we know that
To find out how much edging is needed determine the circumference of the circular garden
The circumference of the circular garden is equal to

where
D is the diameter
we have

assume

substitute


Part b) we know that
To find out the cost to edge the garden, multiply the length of edging plastic needed by the cost of $4.53 per meter
so
