Scientific notation always leaves one number to the left of the decimal
.62 x 10 ^2
move the decimal point 1 place to the right to get 6.2 and now the exponent becomes 1.
Please help me I don't understand what to do for this, as I haven't learned what to do if I need to find the average of something in Scientific Notation. I tried doing it using division, but I got 0.62 x 10^2, which isn't one of the choices. Could someone please explain to me how I do it?
In a recent year, the population of California was about 2.52 x 10^7 people. It's land area is about 4.95 x 10^5 km^2. What was the average number of people per square kilometer?
A. 0.62 x 10^5
B. 6.2 x 10^1
C. 0.62 x 10^14
D. 6.2 x 10^9
1 answer