Copy of ExtraCredit-Sections5.6and5.7

344 days ago by alexislm

#Math 010 4148 June 15, 2011 #Name _________________________________________ #Date/Time Submitted __________ 
       
#Make a copy and rename your file. Please do not make any changes to this shared file #Extra credit work equivalent to one quiz # Answers to worksheets 5.6 and 5.7 # Use the format shown here: #Section# Item# Question # Due date: Saturday June 18. (One quiz - minimum) # The earlier, the better (more extra credits!) 
       
#5.6 1a) Solve z+0.8 = 2.5 
       
0.8-2.5 
        
-1.70000000000000
-1.70000000000000
x= -1.7 
       
#5.6 1b) Solve 0.27x = -0.81 
       
 
       
#5.7 1a) Find the mean of 71,47,71,99,47 71 + 47 + 71 + 99 +47 #correct this entry...is it enough to just add the numbers 
        
335
335
335/5 
        
67
67
#Check your above answer using the mean() command mean([85.,78.,67.]) #using decimals, will give us decimal answer 
        
76.6666666666667
76.6666666666667
 
       
mean([85 ,78 ,67]) #using whole numbers will give us (usually a fraction in lowest terms) 
        
230/3
230/3
 
       
#Just use mode() command in SAGE to find mode mode([1,2,2,3,5]) #Use square brackets to define list of numbers 
        
[2]
[2]
[2] 
        
[2]
[2]
#Just use median() command in SAGE to find median median([1.,2.,3.,4.,5.,5.]) # "decimalize" to get a decimal answer :) 
        
3.50000000000000
3.50000000000000
3.5 
        
3.50000000000000
3.50000000000000