Answer: Depending on the variables you want to use, the answer would be $40x + $35 = m.
I believe this is right, sorry if it isn’t!
Step-by-step explanation:
Answer:
Step-by-step explanation:
Do you have a picture of the diagram so I can see where the 300 and 10 are placed :D ?
Your gonna start at a point then go up 6 and over 3 then make a point then so the same from that point and that’s your slope
The least common multiple of these two numbers is 2310. Hope this helps
Answer:
It will take 4 minutes and 30 seconds for hot coffee to cool to a temperature of 25 ° C
Step-by-step explanation:
This problem can be modeled by a first order equation
T(t) = TA + kt
In which TA is the temperature at instant zero and r is the rate of warming(g>0) or cooling(k<0). t is the time in minutes.
The initial temperature of the cup of coffee is 70ºC. So TA = 70. The temperature cools at the rate of 10ºC per minute, so k = -10. So, the equation of the model is:
T(t) = 70 - 10t
We want to know the instant of time when T = 25, so:
25 = 70 - 10t
10t = 70 - 25
10t = 45
t = 4.5 minutes
It will take 4 minutes and 30 seconds for hot coffee to cool to a temperature of 25 ° C
