Answer:
The answer is option 3.
Step-by-step explanation:
You have to substitute H+=2×10^(-9) into the equation of pH :
pH = -log[H+]
H+ = 2×10^(-9)
pH = -log[2×10^-9]
= 8.70 (3s.f)
You can ise repeated reasonings
One such line is y = -8/7x + 3 (The perpendicular slope will be the negative reciprocal of the given slope. You can graph it to make sure.)
Hope this helps!
Brainliest Please!
Answer:
the answer is 0
Step-by-step explanation:
just count from -6 all the way to 8 then you will find out that the there are 15 numbers from point a to point b then count from both sides the center
