Select the proper placement for parentheses to speed up the addition for the expression 4 + 6 + 5 a. (5 + 4) + 6 b. (4 + 6) + 5 c. (5 + 6) + 4 d. 4 + (6 + 5)

The answer is B. (4+6)+5.

Step-by-step explanation:

To find the proper placement for a parentheses to speed up the addition, fisrt we have to look the expression:

We can place the parentheses for the first two terms and make it simple, this is:

It makes the sum easy because you can make the sum in two parts.

The answer is B. (4+6)+5.

answer: b

step-by-step explanation:

answer:

the position of equilibrium will shift to the left.

step-by-step explanation:

the general equation for the dissociation of a weak base is

b + h₂o   ⇌   bh⁺ + oh⁻

according to le châtelier's principle, when a stress is applied to a system at equilibrium, the system will respond in a way that tends to relieve the stress.

if you apply a stress by adding more bh⁺ or oh⁻,   the system will respond by moving in a direction that gets rid of the added ions.

the position of equilibrium will shift to the left, forming more of the undissociated base.