Your answer should be 12,500,000
Answer: 
Step-by-step explanation:
By definition, the "Difference" is the result of a subtraction.
It is important to remember that Scientific Notation is in the following form:

Where "a" is a number between 1 and 10 ( but not including 10) and "b" is an Integer.
In this case, according to the information given in the exercise, you know that the Petronas towers are 1,483 feet tall and the Key tower is 947 feet tall.
Then, the diffrence between the heights of those towers can be find by subtracting them. So, this is:

In order to write the difference calculated above in Scientific notation, the Decimal point must be after the first digit; then you must move the Decimal point two places to the left. Therefore, you get that this is:

Answer:
answer below
Step-by-step explanation:
C. i) y = 23,000(1 - 0.15)^t
ii) y = 23,000(1 - 0.15)^t
y = 23,000 x 0.85^4
y = 23,000 x 0.52200625
y = $12,006.14
y = $12,006. when rounded to the nearest dollar
This is what I got
The number of seconds in a year are 31,557,600 seconds, which gives;
There are approximately Pi times 10,000,000 seconds in one <u>year</u>.
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<h3>How can the given statement be completed?</h3>
The number of seconds in one day = 86,400
The number of seconds in one week = 604,800
The number of seconds in a year = 31,557,600
Therefore;

Which gives;
The number of seconds in a year ≈ π × 10,000,000
The completed statement is therefore;
- There are approximately Pi times 10,000,000 seconds in one <u>year</u>
Learn more about conversion of units here:
brainly.com/question/599249