Answer: 
a)  -    9/2   or   -0,45
b)  -   3/5    or -0,6
c)   -4
d)  1
e)  -2
d)  0
Step-by-step explanation:
 
        
             
        
        
        
It should be 6.36cm. If not ask someone smart in your class.
        
             
        
        
        
Answer:
Step-by-step explanation:
d = number of dimes
2.80 = 0.1d + 0.25 (d + 8 )
2.80 = 0.1d + 0.25d + 2            Combine like terms
2.80 = 0.35d + 2                       Subtract 2 from both sides
0.80 = 0.35d                             Divide both sides by 0.35
d ≈ 2.29
No, it's not possible to have more quarters than dimes when the total is $2.80 because it's not possible to have part of a dime.
 
        
             
        
        
        
To answer b - You need to find how much it costs to rent a bike per hour. To do this divide the over all cost ($12) by your amount of time (3 hrs) to get $4 per hour. Same with the $20 per 5 hours!
        
             
        
        
        
A I think I’m not really sure