Answer :im not very sureeee
Step-by-step explanation:
 
        
             
        
        
        
Answer:
13.65
Step-by-step explanation:
 
        
             
        
        
        
9514 1404 393
Answer:
   a) CP = SP/1.1
   b) CP = $59.50
   c) GST = $5.95
Step-by-step explanation:
a) Divide by the coefficient of CP.
   SP = 1.1×CP
   CP = SP/1.1
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b) Use the formula with the given value.
   CP = $65.45/1.1 = $59.50
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c) You can do this two ways: subtract CP from SP, or multiply CP by 0.1.
   GST = SP -CP = $65.45 -59.50 = $5.95
   GST = CP×0.10 = $59.50 × 0.10 = $5.95
 
        
             
        
        
        
So first one
'how many solutions does 2x-y=-5 and 2x+y=5 have?'
add and get
2x-y-5
plus
2x+y=5
equals
2x+2x+y-y=5-5
4x=0
x=0 always
solve for y
4(0)+y=5
y=5
the solution is (0,5)
only <u>ONE </u>solution
one way is to subsitute 
just remember that it is in (x,y) form so 
the pont (1,2) means that 1 solution is x=1 and y=2 so subsitute and find that
the first one is the answer you are correct
just look at the graph
the solution is the intersection
it seems to be at a point that is 3 units to the right and -6 units up (6 units down)
so the solution is (3,-6)
yo are corect
subsitution
y=y 
therefor
the answe ris (-4,-14) if you did the math correctly
#8 is correct
# 9 is correct
# 10 the answe ris bananas=0.40 pears=0.60
the  last one you got it wrong, remember to check your answer to the graph for commonsense
then answer is (-2,5) and (1,2) 
        
             
        
        
        
The answer is -403
The order of operations puts multiplication before subtraction. -1 x 372= -372, and -372-31= -403