Answer:
Exact form : 3/10
Decimal form : 0.3
Step-by-step explanation: To subtract fractions, find the LCD (Least Common Denominator) and then combine. 
Hope this helps you out! If you need anymore help with math, let me know and I will be more than happy to help you out! ☺
-Karleif Jonsi-
 
        
             
        
        
        
For this case we have that by definition, the density is given by:

Where:
M: It is the mass
V: It is the volume
According to the data of the statement we have:

So, the mass is given by:

Thus, the mass of the brass ornament is
Answer:

 
        
             
        
        
        
When you subtract a negative, it changes it to adding a positive.
= -2.5 - (-3.25)
= -2.5 + 3.25
= 0.75
Hope This Helped! Good Luck!
 
        
             
        
        
        
Answer:
(A)24 cm2
Step-by-step explanation: