1.) -15.9, -15.2, -3.6, 3.6
2.) second one is already correct
3.)-2.3, -2.03, 2.03, 3.0
        
             
        
        
        
Answer:
y= -3
Step-by-step explanation:
(-7/2)y  =21/2
Divide both sides by (-7/2) = Multiply by (-2/7)
On the left side ,after cancellation you have only  y
On the right side you multiply 21/2 by (-2/7)
y= (21*-2) / 2*7
y=(-42)/14
y=(-21)/7
y=- 3     
 check:
-(7/2) of- 3 is  10.5         21/2=10.5
 
        
             
        
        
        
Answer: 
8 + 90 + NaN + 4000 + 50000
Mark me! thanks :)
        
                    
             
        
        
        
Answer: the slope of perpendicular lines are opposite and reciprocal. 
First line slope is 3/2. The slope of the second line is - 2/3
First line slope is 2. The other line slope is -1/2
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Guess and Conjecture
Step-by-step explanation:
Conjecture is simply an opinion gotten from an incomplete information .Fro example. 10 boys selected from Nigeria were served pizza. None of them ate pizza.
it is a conjecture to conclude that all the males in Nigeria do not eat pizza, because the information is incomplete
Guess is almost similar to conjecture. It is  conclusion from incomplete information. It is based on one's personal opinion. Guess can be true or false. it is under probaility and hence cant be banked upon to explain a proof.