Which of the following is 0.0000000708 written in scientific notation?

A.)7.08 x 10^–8
B.)7.8 x 10^–8
C.)708 x 10^–10
D.)70.08 x 10^–9

I think it is A.
Thank you.

I think it is A too if not it is D! Your Welcome(:

It is A.

To write a number in scientific notation, we need to express it in the form of "a × 10^b," where "a" is a number between 1 and 10, and "b" is an exponent representing the power of 10.

To determine which of the given options is the correct scientific notation for 0.0000000708, we can begin by expressing this number in the proper form. When we move the decimal point eight places to the right to make it a value between 1 and 10, we get 7.08. Additionally, the given number is multiplied by 10^(-8), indicating the decimal place we moved.

Now, let's compare the options with our derived value of 7.08 × 10^(-8):

A.) 7.08 × 10^(-8)
B.) 7.8 × 10^(-8)
C.) 708 × 10^(-10)
D.) 70.08 × 10^(-9)

The correct answer is indeed option A, as it matches our calculated value of 7.08 × 10^(-8).

Therefore, the correct scientific notation for 0.0000000708 is 7.08 × 10^(-8).

You're welcome!