Theo recorded the means and mean absolute deviations of his language arts and Biology scores. He found the difference in the mea
2 answers:
Answer:
Option: a is the correct answer.
a. 2
Step-by-step explanation:
We are given a table for the mean and mean absolute deviations as:
Language Arts Biology
Mean 98 90
Mean Absolute Deviation 3.5 5
Hence, the difference in the mean is:
98-90=8
Now we calculate the ratio of difference in mean with each of the mean absolute deviation score.
1)
which is approximately equal to 2.
2)
which is also approximately equal to 2.
Hence, the approximate ratio of the difference in the means to each of the mean absolute deviations is: 2
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Answer:
Step-by-step explanation:
The vertex form of a parabola is given as
If this parabola opens downward, then a<0.
This means for a function opening downward not to have a solution, the k value must also be negative and taking a square root of a negative number will not give real solution.
From the given options, examples of such functions are:
and
To draw a graph of any linear function you need two points only. We usually use x and y intercepts because these are easiest to work with.
To find x-intercept we set y to be 0. This is also called zero of a function. Let us find x-intercepts for those two functions:
Now we simply set y=0 and solve for x:
Now we need to find y-intercepts. To do this we simply set x to be zero.
Graphs of our functions are not defined by these two points.
To draw a graph you simply draw a line through these two points.
To find intersection we can use a fact that at the point of intersection both functions have the same value. We can write that down mathematically this way:
-1.3x+4.4=1.2x+0.9
Now we need to solve for x. This will give us an x coordinate of the intersection point.
Now we simply plug in these value of x in any function to obtain y coordinate of the interception point.
Our intersection point the following coordinates (1.4,2.6).
I have attached the graph with all the points that we calculated highlighted.
To find x-intercept we set y to be 0. This is also called zero of a function. Let us find x-intercepts for those two functions:
Now we simply set y=0 and solve for x:
Now we need to find y-intercepts. To do this we simply set x to be zero.
Graphs of our functions are not defined by these two points.
To draw a graph you simply draw a line through these two points.
To find intersection we can use a fact that at the point of intersection both functions have the same value. We can write that down mathematically this way:
-1.3x+4.4=1.2x+0.9
Now we need to solve for x. This will give us an x coordinate of the intersection point.
Now we simply plug in these value of x in any function to obtain y coordinate of the interception point.
Our intersection point the following coordinates (1.4,2.6).
I have attached the graph with all the points that we calculated highlighted.
Explanation:
For reasons unknown, Brainly gets bent by the use of "f(x)". So, an appropriate answer cannot be posted as text. I have posted it as attached pictures.
