Evaluate the limit, or state that
limit does not exist.
4n-6n/10n

The limit converges to -1/5

Step-by-step explanation:

Plugging in infinity for n you will see that the limit will go to infinity/infinity so you have to apply L'Hopitals Rule

Doing so you find it will turn into the limit of (4-6)/10 as n goes to infinity. This then simplifies to -1/5

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

step-by-step explanation: