how do you write $5.09 \\times 10^{-2}$ in standard form?

$how do you write $5.09 \\times 10^{-2}$ in standard form?$

how do you write $5.09 \times 10^{-2}$ in standard form?

A negative exponent means $\frac{1}{10^n}$, so $10^{-2} = \frac{1}{100}$

Calculate $5.09 \times \frac{1}{100}$
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$5.09 \times 0.01 = 0.0509$

0.0509