Answer:
0.02 or 2%
Step-by-step explanation:
The probability that test A is negative if the illegal drug has been used (P(A|N)) is 0.1 while the probability that test B is negative if the illegal drug has been used (P(B|N)) is 0.2.
Therefore, the probability that neither test is positive if the illegal drug has been used is:
There is a 0.02 or 2% probability that neither test is positive if the illegal drug has been used.
There are 5 couples are sitting in the row
<h3>How many couples are sitting in the row?.</h3>
The given parameters are
Maximum = 6 couples
In the hall, we have the following arrangements
<u>First couple</u>
Right = 2 couples
Left = 1 couple
<u>Another couple</u>
Left = 3 couple
Right = 1 couples
The left of the other couple is the right of the first couple
So, we have the following arrangements:
<u>First couple (1)</u>
Right = 2 couples
Left = 1 couple
<u>Another couple</u>
Right = 1 couples
The total number of couples is
Total = 1 + 2 + 1 + 1
Evaluate the sum
Total = 5
Hence, there are 5 couples are sitting in the row
Read more about combination at:
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Noreen made 8 and 2/3 cups which after solving becomes 8.666
now the guest ate 3/4 which means 3/4 of 8.66 which is 6.50 which means the guest ate 6 1/2 cups
Answer:1 donut=$0.75 and 1 cookie=$0.6
let c be the cookie and d be the dougnut
2d +3c = 3.30 ---eq 1
5d+ 2c = 4.95 ---eq 2
