Answer:
maybe 20
Step-by-step explanation:
or find it out yourself
Answer:
80,84,86,87, 91, 92, 90,94, 100
Step-by-step explanation:
Order them from low too high number grades.
Answer:
Step-by-step explanation:
Question 9
<u>From the previous question we know that:</u>
- The rate of draining = 2/3 gal/min
- Remaining water = 5 gal
<u>Time to empty the tank is:</u>
- 5 : 2/3 =
- 5 * 3/2 =
- 15/2 =
- 7 1/2 minutes
The answer to your question is 49.12
A) You want to find t such that
.. C(t) = d
.. d = 20 +60*0.95^t
.. (d -20)/60 = 0.95^t
.. log((d -20)/60) = t*log(0.95)
.. t = log((d -20)/60)/log(0.95) . . . . . . time to cool to d degrees (d > 20)
b) C'(t) = 60*0.95^t*ln(0.95)
.. C'(1) = 60*0.95*ln(0.95) ≈ -2.924 °C/min
