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.
6+9=15 is a related addition fact for 15-6=9
ANSWER:
We'll first find the increase in CO2 level, between 1959 and 2005.
Now, Percent of increase.
<u>Increase carbon-dioxide levels</u>:— 50.
<u>Percent increase</u>:— 13.62%
575 / 5 = 115
Dora has saved $115 per month.