Mercury expands when it is heated. This process is called thermal expansion.
        
             
        
        
        
Answer:
The current temperature is -15° (15° below zero) 
Explanation:
The temperature drops 10°:
T-10°
It will reach 25° below zero:
T - 10° = -25°
We add 10° in both members of the equation:
T - 10° +10° = -25° +10°
The equation is simplified as follows:
T = -25° +10°
T = -15°
The integer -15° can be expressed as 15° below zero.
 
        
             
        
        
        
Answer: Add more information please! Thanks!
Explanation:
 
        
                    
             
        
        
        
Hello
the answer is 43.129310000000004
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