Add up the lengths of the several sides of the polygon. 
Examples: The perimeter of a triangle is the sum of the lengths of the 3 sides.
The perimeter of a hexagon is the sum of the lengths of the 6 sides.
And so on.
I highly recommend drawing any polygon whose perimeter you wish to calculate.
 
        
             
        
        
        
Answer:
1 : to put in the same order or rank. 2 : to bring into a common action, movement, or condition : harmonize coordinate schedules She'll be coordinating the relief effort. 3 : to attach so as to form a coordination complex
 
        
             
        
        
        
Answer:
d. H0:  vs.
 vs.  
Step-by-step explanation:
A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  
The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".  
The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".  
On this case the Management try to determine if there is a difference in the average investment/quad between using electricity and using gas. So this needs to be on the alternative hypothesis. And the complement of the alternative hypothesis would be on the null hypothesis.  
Null hypothesis : 
Alternative hypothesis:  
Or equivalently:
Null hypothesis : 
Alternative hypothesis:  
Other important thing is that on the alternative hypothesis we never can have the symbol equal.  
So on this case the best options is:
d. H0:  vs.
 vs.  
 
        
             
        
        
        
Answer:
Kevin’s garden is rectangular and measures 12 metres by 15 metres. He plans to lay new turf in the garden which will cost £8 per square metre. How much turf will he need to buy and how much will this cost? 4)Inga needs to buy enough skirting board to replace the old skirting board in her bedroom. The bedroom is 5m 20cm long and 4m 80cm wide.
Step-by-step explanation:
 
        
             
        
        
        
The answer is going to be 68/9 and the fraction is negative. 
hope this help!