Question

Write 1.49 x 10^-7 in standard form

Answer 1

To write 1.49 x 10^-7 in standard form, move the decimal point 7 places to the left, resulting in 0.000000149.

Step-by-step explanation:

The student asked to write 1.49 x 10^-7 in standard form. To convert a number from scientific notation to standard form, we need to move the decimal point to the left or right depending on the exponent. Since the exponent is -7 in this expression, we move the decimal point 7 places to the left.

Step-by-step conversion:

1. Start with 1.49.
2. Move the decimal point 7 places to the left, adding zeros as needed: 0.000000149.

Therefore, 1.49 x 10^-7 written in standard form is 0.000000149.