Question

Which of the following expressions is 0.00012 written in scientific notation?



1.2 × 10 ^-4

.12 × 10 ^-3

1.2 × 10^4

12 × 10^ -5

Answer 1

what do you think it is?

Answer 2

c

Answer 3

why do you think that?

Answer 4

If you move the decimal point to the right, the exponent of your x 10 is positive.

Answer 5

idk i just guessed

Answer 6

@kliedako just explained to you how to find/check your answer... If you move the decimal back 4 times to the right, you get?

Answer 7

it would 4 spaces

Answer 8

scientific notation is expressed in n x 10^k

where

10<n<1
and k is the number of times the decimal point is moved
if moved to the left, the sign of k would be negative, if moved right, the sign of k would be positive.