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Karolina [17]
3 years ago
10

What is the value of x in the equation-2/5x-2=18

Mathematics
2 answers:
Flura [38]3 years ago
5 0
First we have to isolate the varible

-2/5x-2=18
        +2   +2

-2/5x=20

then divide both sides by -2/5 to get x completely by itself

-2/5x=20
-------  ---
-2/5     -2/5

x=-50

i hope i've helped!
Helga [31]3 years ago
5 0
X=-50! hope i’ve helped
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Butyric acid is known as a weak acid, we need the concentration of [H+] formula of weak acid which is given by this equation :

[H^{+}]=\sqrt{Ka . Ma}

where [H+] is the concentration of ion H+, Ka is the weak acid ionization constant, and Ma is the acid concentration.

Since we know the concentration of H+, the pH can be calculated by using

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From question above, we know that :

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By using the equation, we can determine the concentration of [H+]

[H+] = √(Ka . Ma)

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Substituting the value of [H+] to get the pH

pH = -log[H+]

pH = -log(6.12 x 10¯⁴)

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Find more on pH at: brainly.com/question/14466719

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