Answer:
8280 cal
Step-by-step explanation:
Q=mc(delta)T
Q=1200(0.115)(-60)
Q=8280 cal
I used 1200 g instead of 1.2 kg
 
        
             
        
        
        
-10w - 400 = o
w= weeks
o = new outstanding balance
        
                    
             
        
        
        
<u>Answer:</u>

<u>Step-by-step explanation:</u>
We know from the question that the student earned $12.50 <em>per hour</em>.
Using this information, we can say that if the student worked for <em>h </em>hours, they would make a total of 12.50 × <em>h </em>dollars.
We also know that the total money they earned is $2500.75.
∴ Therefore, we can set up the following equation:

From here, if we want to, we can find the number of hours worked by simply making <em>h</em> the subject of the equation and evaluating:
<em>h </em>=<em> </em>
   = 200.6 hours
 
        
                    
             
        
        
        
 <span><span>8x</span>+<span>10y</span></span>=<span>9
Hope this helps.</span>
        
                    
             
        
        
        
Step-by-step explanation:
Recall that 1 dozen = 12 so 4 dozen cookies has a total of 48 cookies. We are going to use the following ratios to solve the problem:
 and
 and 
a) 
b) 18 dozen cookies = 216 cookies
