Question

Express in scientific notation. Choose the answer with the proper number of significant figures. 69,000,000,000 = _____

Answer 1

The answer is 6.9 times 10 to the power of 10 (6.6E10). By moving a decimal point in 69,000,000,000 to where there is only one non-zero digit to the left of the decimal, the number becomes 6.9. Scientific notation is all about times 10 to the power of something, so in order to get the power of number, simply count back from where the decimal point was entered to the end of the original number, which would amount to 10 spaces, therefore giving an answer of 6.9 times 10 to the power of 10.

Answer 2

Answer:

69,000,000,000 = $6.9*10^{10}$

Explanation:

Hello! Let's solve this!

To express a number in scientific notation, we must first choose the number between 0 and 9. In this case the number chosen is 6.9.

Then we multiply * 10 and the exponent of 10 we assign it as follows:

If the point was run to the left, the exponent is positive. If the point was run to the right, the exponent is negative.

In this case the point was run 10 places to the left. The scientific notation is:

69,000,000,000 = $6.9*10^{10}$