Question

Write 105,000 in scientific notation.

(A) 10.5 x 104
(B) 105 x 105
(©) 1.05 x 105
(D) 1.05 x 10-5

Answer 1

The answer will be C

Answer 2

(©) 1.05 x 10^5

Explanation:

105,000.

Scientific notation is of the for a * 10^b

where a is a number between 1 and less than 10

move the decimal to make a be correct

1.05000

we moved it 5 places to the left, so b is 5

It is positive since we moved it to the left

1.05*10^5

We drop the zeros to the right of the 5