Acceleration: 
Step-by-step explanation:
For an object in uniformly accelerated motion, we can use the so-called SUVAT equations.
One of them is:

where
s is the displacement
v is the final velocity
t is the time
a is the acceleration
Here we want to re-arrange the equation to find the acceleration. We start by adding
on both sides of the equation:

Now we change sign on both sides:

And finally we multiply by 2 and divide by
on both sides, so we get:

Learn more about accelerated motion:
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c/2-3+6/d
substitute c=14 and d=13:
14/2-3+6/13
simplify:
7-3+6/13
4+6/13
multiply 4 by 13/13 to group like terms (for a fraction):
52/13+6/13
combine:
58/13
Therefore, the answer is 58/13 or around 4.462
Answer: Please rewrite your question or send a pic. It is not clear what you are asking.
Step-by-step explanation:
-12 ÷ 3 ×(-8 + (-4)^2 -6)+2
Order of operations (PEMDAS)
= -4 × (-8 + 16 - 6) + 2
= -4 × 2 + 2
= -8 + 2
= -6
Answer
-6