What is simplify-log_{10}(1.9*10^{-9}) ?

The solution to simplify-log_{10}(1.9*10^{-9}) is -log_{10}(1.9)+9

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simplify-log_{10}(1.9*10^{-9})

simplify

- lo g_{10} (1.9 \cdot 1 0^{- 9})

- lo g_{10} (1.9) + 9

Decimal Notation

8.72124 \dots

Solution steps

- lo g_{10} (1.9 \cdot 1 0^{- 9})

Apply log rule:

lo g_{c} (ab) = lo g_{c} (a) + lo g_{c} (b)

lo g_{10} (1.9 \cdot 1 0^{- 9}) = lo g_{10} (1.9) + lo g_{10} (1 0^{- 9})

= - (lo g_{10} (1.9) + lo g_{10} (1 0^{- 9}))

Apply log rule:

lo g_{a} (x^{b}) = b \cdot lo g_{a} (x)

lo g_{10} (1 0^{- 9}) = - 9 lo g_{10} (10)

= - (lo g_{10} (1.9) - 9 lo g_{10} (10))

9 lo g_{10} (10) = 9

= - (lo g_{10} (1.9) - 9)

Distribute parentheses

= - (lo g_{10} (1.9)) - (- 9)

Apply minus-plus rules

- (- a) = a, - (a) = - a

= - lo g_{10} (1.9) + 9

ln (5.1 \cdot 1 0^{- 4}) + 0.94

3.74 + lo g_{10} (\frac{2.475}{0.025})

ln (2 x^{2} + x^{2}) - ln (x)

- 0.64 lo g_{2} (0.64) - 0.36 lo g_{2} (0.36)

ln (\frac{e ^{- 10 θ} θ ^{20}}{207360})

What is simplify-log_{10}(1.9*10^{-9}) ?
The solution to simplify-log_{10}(1.9*10^{-9}) is -log_{10}(1.9)+9