Question

Convert the number 5.2216 x 10^-9 into decimal notation. Which of the following is the correct decimal representation?

A) 0.00000052216
B) 0.0000000052216

Answer 1

The number 5.2216 x 10⁻⁹ in decimal notation is 0.0000000052216, which means the decimal point is moved 9 places to the left.

Step-by-step explanation:

To convert the number 5.2216 x 10⁻⁹ into decimal notation, we need to move the decimal point 9 places to the left, because the exponent is negative. This implies adding zeros where needed.

Here's a step-by-step explanation:

1. Start with the number: 5.2216
2. The exponent is -9, which tells us to move the decimal to the left 9 places.
3. Add zeros to fill in the gaps: 0.0000000052216

Therefore, the correct decimal representation is option B) 0.0000000052216.