Linda converted 0.0005 liters to milliliters using a calculator. The calculator displayed the number 5E-7. What is this number in scientific notation?

Question

A. 5+10^-7
B. 5×10^-7
C. 5×10^7
D. -7×10^5

Answer 1

The number displayed on the calculator, 5E-7, is already in scientific notation. In scientific notation, "E" is often used to indicate "times ten raised to the power of." Thus, 5E-7 can be interpreted as:

\[ 5 \times 10^{-7} \]

Therefore, the correct answer is:

B. 5×10^-7