3 years ago

HELP PLZ IM IN A HURRY

Mathematics

2 answers:

Genrish500 [490]3 years ago

8 0

Answer:

34.5

Step-by-step explanation:

there are two sides of a box! you multiply everything by 2 !

olga nikolaevna [1]3 years ago

3 0

Answer:

sorry 17.25 inches is the correct anser sorry answered it the wrong way did the wrong math formula

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago

The equation for the pH of a substance is pH = –log[H+], where H+ is the concentration of hydrogen ions. Which equation models t

Elden [556K]

$\bf \textit{Logarithm Cancellation Rules}
\\\\
log_a a^x = x\qquad \qquad \boxed{a^{log_a x}=x}\\\\
-------------------------------\\\\
pH=-log(H+)\qquad \stackrel{pH}{7.2}=-log(H+)\implies -7.2=log_{10}(H+)
\\\\\\
10^{-7.2}=10^{log_{10}(H+)}\implies 10^{-7.2}=H+\implies \cfrac{1}{10^{7.2}}=H+$