Answer
According to newton law of cooling

and

now At Ta = 100
T₀ = 10 °C
T₁ = 12° C

10 = C + 100
C = -90
now,



at time equal to t
T(t) = 70

 
 


t = 48.88 s
hence, after 48.88 s the temperature of the body will be 70°C
b) time taken to reach 98°C

 
 


t = 390 s
hence, after 390 s the temperature of the body will be 98°C
 
        
             
        
        
        
1 L = 1000 mL
1 kg = 1000 g
You can use this to convert the equations.
200 mL of paint x 5 = 1000 mL (1 liter)
40 g x 5 = 200 grams of paint powder
200 g x 20 = 4000g of paint powder for 20 liters of paint
4000g/600g = 6 2/3
You’ll need 7 packets of paint powder.
        
             
        
        
        
6.57000 and in the expontent is how many times u move the decimal up :> hope  i helped
 
        
             
        
        
        
The question is about rearranging the given formula to express M in terms of T,C and N:
If you subtract CN on the left and on the right, then swap it around, you get:
M = T - CN
Which is the rewritten formula for M. (Check if it makes sense: the total cost minus the monthly cost is the remaining yearly membership cost, yes that does make sense).