Answer: 252
Step-by-step explanation:
You just multiply 84 by two and then ad another 84.
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
Answer:
3/10 liter for one glass. 6 glasses total would be how many liters? Just multiply what one glass would have by 6. Lemme know the answer you get
$49=100%
$0.49=1%
$0.49x65=65%(100-35=65)
$31.85=65%
Answer:
Hi. 9/14 is a fraction already. Maybe you meant decimal?
Step-by-step explanation: