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twistedhyperboles
29.10.2019 •
Mathematics
Which equation implies that a and b are independent events?
p(a b) = p(a)
p(b)
p(a) = p(b)
p(b|a) = p(a)
p(a b) = p(a) p (b)
p(a|b) = p(b|a)
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Ответ:
Ответ:
First option is correct.
Step-by-step explanation:
Since we have given that A and B are two events then,
According to "Probability rule":
But we have also given that event A and B are two independent events .
independent events are those events if occurrence of one has no effect on the other.
so,
Hence, First option is correct.
Ответ:
Year 2,590
Step-by-step explanation:
In this question, we are asked to calculate the year at which the population of a country will be a certain amount given the exponential equation through which the equation proceeds.
Let’s rewrite the exponential function;
A = 429e^0.024t
Now here, our A is 559,000,000
t is unknown
Let’s substitute this value of A in the exponential equation;
559,000,000 = 429 * e^0.024t
559,000,000/429 = e^0.024t
1,303,030.303030303 = e^0.024t
Let’s take the logarithm of both sides to base e, we have;
ln(1,303,030.303030303) = ln(e^0.024t)
14.08 = 0.024t
t = 14.08/0.024
t = 587 years
Now, we add this to year 2003 and this gives year 2590