3x +12 = 18
-12 -12
---------------
3x 6
-- = --
3 3
x = 2
45 km at 54 km/hr
45 / 54 = 5/6
It took him 5/6 of an hour or 50 minutes I believe
61.4117 km per hr
The answer is D, x = +-1 and +-3i
PH is calculated by the negative logarithm of the hydrogen concentration in a solution. Therefore, the pH in this case is:
pH = -log (0.0000006)
pH = 6.22
Therefore the correct answer among the choices is the last option, pH of 6 with a color pink.
Can you make the a bit more clear