Answer:
12 can u pls give me brainliest so i can lvl up
Step-by-step explanation:
Answer: 9^2 (81)+8^2(64)=12.04^2(144.97) which rounded/estimated is equal to 145
Answer:
The probability is 0.9211
Step-by-step explanation:
Let's call K the event that the student know the answer, G the event that the student guess the answer and C the event that the answer is correct.
So, the probability P(K/C) that a student knows the answer to a question, given that she answered it correctly is:
P(K/C)=P(K∩C)/P(C)
Where P(C) = P(K∩C) + P(G∩C)
Then, the probability P(K∩C) that the student know the answer and it is correct is:
P(K∩C) = 0.7
On the other hand, the probability P(G∩C) that the student guess the answer and it is correct is:
P(G∩C) = 0.3*0.2 = 0.06
Because, 0.3 is the probability that the student guess the answer and 0.2 is the probability that the answer is correct given that the student guess the answer.
Therefore, The probability P(C) that the answer is correct is:
P(C) = 0.7 + 0.06 = 0.76
Finally, P(K/C) is:
P(K/C) = 0.7/0.76 = 0.9211
Answer:
<h2>10</h2>
Step-by-step explanation:
"12 more than the quiotent of a number n of and two decreased by 4"
Simplify:
Put n = 4 to the expresssion:
Step-by-step explanation:
i really dont know tbh that confusing
