Question

which answer shows \\(9 \times 10^{-5}\\) written in standard form?

-0.000009
-0.00009
0.0009
0.00009

Explanation:

Identify the given scientific notation expression

$$ 9 \times 10^{-5} $$

Convert the negative exponent to a decimal value

$$ 10^{-5} = 0.00001 $$

Multiply the coefficient by the decimal value

$$ 9 \times 0.00001 = 0.00009 $$

Answer:

• (A) \(-0.000009\)
• (B) \(-0.000009\)
• (C) \(0.0009\)
• (D) \(0.00009\) (Correct answer)