Question

Kailey wrote 8,912,000 in scientific notation as 89.12 times 10 Superscript 5. Which statement best describes Kailey's work? Kailey is correct: 89.12 times 10 Superscript 5 equals 8,912,000. Kailey is not correct: the exponent of ten should be negative. Kailey is correct: it is written as a decimal number multiplied by a power of ten. Kailey is not correct: 89.12 times 10 Superscript 5 is not written in scientific notation.

Answer 1

d

Explanation:

Answer 2

D. Kailey is not correct:
`89.12 * 10^5` is not written in scientific notation.

Explanation:

We have been given that Kailey wrote 8,912,000 in scientific notation as
`89.12 * 10^5`. We are asked to choose the statement that best describes Kailey's work.

We know that to convert a number into scientific notation, we write the given number as product of two numbers. One factor is a number between 1 and 10, while the 2nd factor is power of 10.

Upon looking at
`89.12 * 10^5` , we can see that 1st factor is 89.10, which is greater than 10. This means that Kailey did not write 8,912,000 in scientific notation.

Therefore, option D is correct choice.