What is simplify-log_{10}(1.8*10^{-9}) ?

The solution to simplify-log_{10}(1.8*10^{-9}) is -log_{10}(1.8)+9

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simplify-log_{10}(1.8*10^{-9})

simplify

- lo g_{10} (1.8 \cdot 1 0^{- 9})

- lo g_{10} (1.8) + 9

Decimal Notation

8.74472 \dots

Solution steps

- lo g_{10} (1.8 \cdot 1 0^{- 9})

Apply log rule:

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

lo g_{10} (1.8 \cdot 1 0^{- 9}) = lo g_{10} (1.8) + lo g_{10} (1 0^{- 9})

= - (lo g_{10} (1.8) + 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} (1.8) - 9 lo g_{10} (10))

9 lo g_{10} (10) = 9

= - (lo g_{10} (1.8) - 9)

Distribute parentheses

= - (lo g_{10} (1.8)) - (- 9)

Apply minus-plus rules

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

= - lo g_{10} (1.8) + 9

- lo g_{10} (5.29 \cdot 1 0^{- 6})

- lo g_{10} (4.2 \cdot 1 0^{- 5})

lo g_{10} (1000 y)

ln (\frac{2.6}{3.2})

- 4 (\frac{1}{2} ln (3) - ln (2))

What is simplify-log_{10}(1.8*10^{-9}) ?
The solution to simplify-log_{10}(1.8*10^{-9}) is -log_{10}(1.8)+9