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zysi [14]
3 years ago
12

as part of a probablity experiment Elliot is to answer 4 multiple choice questions. For each question there are 3 possible answe

rs only 1 of which is correct. If elliott radomly and independently answers each question. What is the probablity that he will answer 4 questions correctly? Please show your work. Thank you
Mathematics
1 answer:
DedPeter [7]3 years ago
5 0
1/3*1/3*1/3*/13=1/81
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A large mixing tank initially contains 1000 gallons of water in which 40 pounds of salt have been dissolved. Another brine solut
sergey [27]

Answer:

If A(t) represents the amount of salt in the tank at time t, the correct differential equation for A is is dA/dt =  15 - 0.005A

Option C) dA/dt =  15 - 0.005A is the correction Answer

Step-by-step explanation:

Given the data in the question;

If A(t) represents the amount of salt in the tank at time t, the correct differential equation for A is?

dA/dt = rate in - rate out

first we determine the rate in and rate out;

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dA/dt = rate in - rate out

dA/dt =  15 - 0.005A

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Option C) dA/dt =  15 - 0.005A is the correction Answer

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