graph the ordered pairs on the coordinate plane. use the point A(3,2) B(-5,2) C(-1,-4) D(4,3) E(-4,0) F(2,-4)
1 answer:
<h2>Explanation:</h2><h2></h2>
In this exercise we have the following points:
So we need to graph each point on the coordinate plane. Recall that the coordinate plane is formed by two perpendicular axes where the horizontal axis is called x-axis and the vertical axis is called the y-axis. So for each point, the first coordinate is called the x-coordinate and the second one is called the y-coordinate. By knowing this, we should use graphing tool in order to plot them. The graph is shown below.
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Answer:
0.3036 = 30.36% probability that at least 9 of the flashlights function properly.
Step-by-step explanation:
For each flashlight, there are only two possible outcomes. Either it works, or it does not. Flashlights are independent. This means that we use the binomial probability distribution to solve this question.
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.
Flashlight works correctly if both its batteries have acceptable voltages:
Each battery has an 88% = 0.88 probability of working correctly(having acceptable voltage), so the probability of the flashlight working correctly is given by:
10 flashlights.
This means that
What is the probability that at least 9 of the flashlights function properly?
This is
In which
0.3036 = 30.36% probability that at least 9 of the flashlights function properly.