Answer: Addition Rule
Step-by-step explanation:This is the probability that either one or both events occur. a. If two events, say A and B, are mutually exclusive - that is A and B have no outcomes
17q you have to subtract to get the answer
Answer:
11
Step-by-step explanation:
h - f = 7 - (-4) = 7 + 4 = 11
Answer:
247.12 million
Step-by-step explanation:
Given:
In 1990, population=242 million
In 1999, population=244 million
estimated population in 2013=?
Estimated growth is calculated by:
P(t)= Po*e^(kt)
where Po is original population
k is growth rate
t is the time in year
Now putting the values of Po=242, P(t)=244, t=9 (t=1999-1990=9) we have:
244=242e^(9k)
(244/242)=e^(9k)
ln(244/242)=9k
k=1/9ln(244/242)
k=0.00091
Now Putting k=0.00091, Po=242, and t=23 (t=2013-1990=23) we have:
P(t)=242e^(23*0.00091)
P(t)=247.12 million
the population in 2013 estimated to be 247.12 million!
Triangle ABD and CBD are congruent by the SAS postulate
Step-by-step explanation:
Step 1 :
Given ,
Segment AC is perpendicular to BD
Segment BD bisects segment AC
To prove the given two triangles are congruent
Step 2 :
Since AC is perpendicular to BD , We have ∠BDA and ∠BDC to be equal to 90 degrees
Also we have AD = DC , because BD bisects AC
BD is a side common to both the triangles and hence is the same
So we have two sides and angle between them (included angle) to be same for both the triangles.
Hence Triangle ABD and CBD are congruent.
