In 2012, the total population of Florida was 3,158,697 people. What was the population in scientific notation, approximately?
2 answers:
Answer:
.
Step-by-step explanation:
Given : In 2012, the total population of Florida was 3,158,697 people.
To find : What was the population in scientific notation,
Solution : We have given
3,158,697
Steps to write in scientific notation :
Step 1 : If a number has n digit we move decimal point ( n-1) place to left
and to balance , multiply by .
We can see there are n = 7 in 3,158,697
So, we move decimal point 6 place to the left .
Then .
Therefore, .
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First, note that x is undefined at 5. / x ≠ 5
Second, replace the inequality sign with an equal sign so that we can solve it like a normal equation. / Your problem should look like:
Third, multiply both sides by x - 5. / Your problem should look like: 3x - 5 = 0
Forth, add 5 to both sides. / Your problem should look like: 3x = 5
Fifth, divide both sides by 3. / Your problem should look like: x =
Sixth, from the values of x above, we have these 3 intervals to test:
x <
x > 5
Seventh, pick a test point for each interval.
1. For the interval x <
Let's pick x - 0. Then,
After simplifying, we get 1 > 0 which is true.
Keep this interval.
2. For the interval
Let's pick x = 2. Then,
After simplifying, we get -0.3333 > 0, which is false.
Drop this interval.
3. For the interval x > 5:
Let's pick x = 6. Then,
After simplifying, we get 13 > 0, which is ture.
Keep this interval.
Eighth, therefore, x <
Answer: x <