Answer:
b the answer is b
Step-by-step explanation:
idk what they mean but i got an 100 and i had this questin so a
I know it is -1 cause of the root of equation
Answer:
its still 4.55
Step-by-step explanation:
I dont understand
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
The answer is B because you multiply 2500 by 7 and then add it to 50,000