The answer is b because if you multiply 3 with m you get 3m and since -2 is a negative when you multiply it, it becomes -6
Answer:
Molly has to add 22.86 milliliters of 5% sulfuric acid.
Step-by-step explanation:
Molly has a mixture of 20 ml of 20% sulfuric acid solution.
She mixes this with 5% sulfuric acid solution and in the end she wants a 12% sulfuric acid solution.
We have to find how many milliliters of 5% sulfuric acid we have to add to make it 12% solution.
Let the volume we add be v milliliters.
We are going to equate sulfuric acid.
v = milliliters
v = 22.86 milliliters
Tan 2x = 2 tan x / (1-tan^2x)
hence, tan 2x = 1
2x = pi
x = pi/2.
Answer:
(f(x+h)-f(x))/h=(9(x+h)^2+8x+8h+2-9x^2-8x-2)/h=(9x^2+18xh+h^2+8h-9x^2)/h=18+8+h
Step-by-step explanation:
Answer:
35
Step-by-step explanation: