Answer:
3.33
Step-by-step explanation:
 
        
             
        
        
        
Answer:


Step-by-step explanation:
Solving (47):
To solve for B, we have:
 --- sum of angles in a triangle
 --- sum of angles in a triangle
This gives

Collect like terms


Solving (48):
To solve for Y, we have:
 --- sum of angles in a triangle
 --- sum of angles in a triangle
This gives

Where
 -- angle on a straight line
 -- angle on a straight line
Solve for X


So, we have:



 
        
             
        
        
        
Answer:
27+64
Step-by-step explanation:
lmk if you need an explanation
 
        
             
        
        
        
Answer:
yes
Step-by-step explanation:
all even numbers greater than two are composite numbers
 
        
             
        
        
        
Step-by-step explanation:
Step one:
given
current (older) fridge
electricity charges= $17 monthly
maintenance costs= $220
let the number of months be x
and the total cost be yo
the expression for the cost for the old fridge is 
yo=220+17x---------1
New  fridge
electricity charges= $6 monthly
costs=  $1,050
let the number of months be x
and the total cost be yn
the expression for the cost for the old fridge is 
yn= 1050+6x---------2
Hence the system of equation for the situation is 
yo=220+17x---------1
yn= 1050+6x---------2
Step two
for 10 years there are 12*10= 120 months
put x= 120 in both expressions and compare the total
yo=220+17(120)---------1
yo=220+2040
yo=$2,260
yn= 1050+6(120)---------2
yn=1050+720
yn=$1770
<u><em>Based on the analysis it will be less expensive to get the new fridge, hence buying the new fridge is worth it.</em></u>