ESP, answer: at least 5002
Answer:
P(X = 12) = 0.0064.
Step-by-step explanation:
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
In which is the number of different combinations of x objects from a set of n elements, given by the following formula.
And p is the probability of X happening.
In this problem we have that:
We want P(X = 12). So
P(X = 12) = 0.0064.
The probability of any event is between 0 and 1. 0 means impossible and 1 means certain.
It could also be written with the percents: 0% and 100%.
Answer:
x=3 x=-3
Step-by-step explanation:
x^2-2x-4=-2x+5
Add 2x to each side
x^2-2x+2x-4=-2x+2x+5
x^2 -4 =5
Subtract 5 from each side
x^2 -4-5 = 5-5
x^2 -9 =0
This is the difference of squares
(x-3) (x+3) =0
Using the zero product property
x-3 =0 x+3 =0
x=3 x=-3
I know the answer but I do not step by step it is c