Express this number in scientific notation 50000

5×10^4

Explanation:

scientific notation: a×10^b, where should be 0<a<10

Step 1. Count the zeros

There are in total 4 zeros in 50000, so we write the exponent as 10^4

Step 2. Look at the number left

The number left is 5, which technically should be the [a] in the expression. But first, we need to check whether or not is it in the proper range of [a].

0<5<10, is it true? YES

So the final expression should be 5×10^4

Hope this helps!! :)

Please let me know if you have any question

a sequence is a function whose domain is the set of natural numbers.

natural numbers are all the negative and positive integers

the answer is 303.15 or 303