Can somebody please get me the answer to this?
1 answer:
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Answer:
2.4
Step-by-step explanation:
We have to find the mean first
Now we have to find deviations.
Note that the deviations are calculated by subtracting the mean from the value. The distance is always positive so the deviations will be positive
Value Deviation
2 2-4.5 = |-2.5| = 2.5
4 4-4.5 = |-0.5| = 0.5
7 7-4.5 = 2.5
2 2-4.5 = |-2.5| = 2.5
3 3-4.5 = |-1.5| = 1.5
7 7-4.5 = 2.5
9 9-4.5 = 4.5
3 3-4.5 = |-1.5| = 1.5
1 1-4.5 = |-3.5| = 3.5
7 7-4.5 = 2.5
The last step is to find the mean of deviations.
The mean absolute deviation of given data set is 2.4 ..
Answer:
The area of rectangle is
Step-by-step explanation:
Let
A(2,7)
step 1
The point A is reflected across the x-axis
we know that
The rule of the reflection of a point across the x-axis is
(x,y) -----> (x,-y)
so
A(2,7) ----->B(2,-7)
step 2
The point B is reflected across the y-axis
we know that
The rule of the reflection of a point across the y-axis is
(x,y) -----> (-x,y)
B(2,-7) ----> C(-2,-7)
step 3
The point C is reflected across the x-axis
we know that
The rule of the reflection of a point across the x-axis is
(x,y) -----> (x,-y)
so
C(-2,-7) ----->D(-2,7)
step 4
Find the area of rectangle formed by
A(2,7),B(2,-7),C(-2,-7),D(-2,7)
using a graphing tool
see the attached figure
The area of rectangle is
