The idea that one cannot forget something they’ve never learned is called
a.
pseudoforgetting
b.
repression
c.
amnesia
d.
dementia

Option (A) is the correct answer.

Explanation:

When we learn something initially without noticing the information and this information retains in our long term memory. Then this type of learning is known as pseudoforgetting.  

When we control a group of people by applying a force then it is known as repression.

When a person totally forgets everything then it is known as amnesia.

When there occurs severe decline in the mental ability of a person in his daily life then it is known as dementia.

Thus, we can conclude that out of the given options idea that one cannot forget something they’ve never learned is called  pseudoforgetting.

nah.   i'm just sleepy.

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

where is unknown. because the position is parabolic, there is symmetry about the midpoint at , and we know that

so that the position function is

which means the velocity is

then the total distance traveled is

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at and ends at , so its displacement is 0.