Steps
8x−7y=−5
Add 7y to both sides
8x−7y+7y=−5+7y
Simplify
8x=−5+7y
Divide both sides by 8
8x
8 =−
5
8 +
7y
8
Simplify
x=
−5+7y
8
Sum = 20(1-(1/4)^5) / (1-1/4) = 26.64
The hydronium ion is H₃O⁺ and its concentration is equivalent to the H⁺ ion concentration. The H⁺ ion concentration is given by:
pH = -log[H⁺]
[H⁺] = 10^(-8.2)
[H⁺] = 6.31 x 10⁻⁹ mole/dm³
The hydronium ion concentration is 6.31 x 10⁻⁹ mole/dm³
Answer:
20 por ciento de probabilidad de que elijas una de esas cartas
Step-by-step explanation:
20 por ciento de probabilidad de que elijas una de esas cartas
So F(6) means 6 on the x axis then look to see where the graph is on the Y axis,
in this case on x 6 y=4
