Alexis sells season tickets to soccer games. The season tickets cost $225.75. She makes a commission of 16% on each sale. Last m
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Answer: The percent of red lights last between 2.5 and 3.5 minutes = 95.44% approx.
Step-by-step explanation:
Given: Mean time = 3 minutes
standard deviation = 0.25 minutes
The probability of red lights last between 2.5 and 3.5 minutes :-
The percent of red lights last between 2.5 and 3.5 minutes = 95.44% approx.
The expression is not defined at x= -2 & for all values of x less than -2 .
<u>Step-by-step explanation:</u>
We have , a given expression as : Basically we need to find domain for this function and see for which values of x the above function is undefined . Domain of a function is the set of values of x for which the function is defined . We have a rational expression,
it's a fractional function which means denominator can be 0 . Denominator =
⇒
⇒
⇒
So , . Also , Denominator is a square root expression so it can't be negative inside root ∴
⇒
i.e. x must be greater than -2.
Therefore, the expression is not defined at x= -2 & for all values of x less than -2 .