clara384
28.07.2019 •
Mathematics
The rate of change of y with respect to t is proportional to 50 - y
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Ответ:
dy/dt = k(50-t)
∫dy = ∫ k(50-t)dt
= ∫ (50k - kt) dt
therefore;
y = 50kt - k/2(t²) + C
Alternatively, can be written as
y = - k/2 (50-t)² + C)
Ответ:
5.44 gallons
Step-by-step explanation:
Each wall has a area 102 square feet. There are 4 walls. 4 times 102 is 408. One gallon of paint covers 75 feet. To find out how many gallons it takes to paint 408 feet, i divided 408 by 75 and the answer was 5.44 gallons.