4x-10=2 Solve and find the justification Help!! Hurry!!
2 answers:
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Answer:
Binomial
There is a 34.87% probability that you will encounter neither of the defective copies among the 10 you examine.
Step-by-step explanation:
For each copy of the document, there are only two possible outcomes. Either it is defective, or it is not. This means that we can solve this problem using the binomial probability distribution.
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 combinatios 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
Of the 20 copies, 2 are defective, so .
What is the probability that you will encounter neither of the defective copies among the 10 you examine?
This is P(X = 0) when .
There is a 34.87% probability that you will encounter neither of the defective copies among the 10 you examine.
Answer:
(y equals start fraction two over three end fraction x)
Step-by-step explanation:
Lest's organize the table values of our function first:
x y
-6 -4
-3 -2
0 0
3 2
The simplest kind of of function is a linear function of the form where
is the slope and
is the y-intercept. Let's us check if our function is a linear one finding its equation and checking that all points are in the line.
The first step to find a linear equation is find the slope of the line; to do it, we are using the slope formula:
where
is the slope of the line
are the coordinates of the first point
are the coordinates of the second point
We know from our table that the first and second points are (-6, -4) and (-3, -2) respectively, so ,
,
, and
.
Replacing values:
Now that we have the slope of our line we can use the point slope formula to complete our linear function:
where
is the slope
are the coordinates of the first point
Replacing values:
Now, to check if our function is valid, we can either check if each point satisfies the rule , or we can graph it and check if each lies is in the graph.
Let's check both:
We already know that points (-6, -4) and (-3, -2) satisfy the rule (after all, those were the point we used to came out with the rule in the first place), so we just need to check the points (0, 0) and (3, 2)
- For (0, 0):
The point satisfies the rule.
- For (3, 2):
The point satisfies the rule.
Since all the points of our table satisfies the rule , we can conclude that the rule describing the function shown is
.
