Answer: 1st one
Step-by-step explanation:
Step-by-step explanation:
From the statement:
M: is total to be memorized
A(t): the amount memorized.
The key issue is translate this statement as equation "rate at which a subject is memorized is assumed to be proportional to the amount that is left to be memorized"
memorizing rate is
.
the amount that is left to be memorized can be expressed as the total minus the amount memorized, that is
.
So we can write

And that would be the differential equation for A(t).
Answer:
hey
Step-by-step explanation:
Answer:
10.56
Step-by-step explanation:
51°F − 32) × 5/9 = 10.56°C