Let's say that x is the number of days he tweets. Now, if he tweets any number of days, we can represent all of that with just x. So out expression will look like:
Hope this helps!
3.2-4d=2.3d+3 people were in my area but my dog was on a dog in a few weeks lol lol I was so sorry to say that this app has no r
1 answer:
You might be interested in
Answer:
We know that the total area under the normal curve is 100%. According to the empirical rule of Normal distribution:
Approximately, 68% of data lies within standard deviations of mean.
Approximately, 95% of data lies within standard deviations of mean.
Approximately, 99.7% of data lies with standard deviations of mean,
Therefore, in a normal curve, roughly 95% of all cases fall within plus or minus two standard deviations.
Given
consider substituting to get a proper quadratic equation,
Solve for ; we can factorize to get
Solve for :
The first equation has no real solution, since for all non-zero
. Proceeding with the second equation, we get
If we want to find all complex solutions, we take so that the first equation above would have led us to