Help me pleaseeee this is due at 8 am
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Answer:
Mean of resulting data = 7 times mean of original data=7a
Step-by-step explanation:
Given that all values in a data set are multiplied by 7. to find the mean of the new set.
Let {x1,x2....xn} be the original data set.
The mean of this data set a=
Now multiply all values by 7
New data set
= {7x1, 7x2...7xn}
Sum of these = 7(x1+x2+..+xn) = 7 times sum of original data set
No of element = n for both the sets
Hence new mean = 7 * mean of original set.=7a
in other words, if the mean of the values in a data set is a. If each of the values in the data set were multiplied by 7, new mean would be 7a.
Given:
The figure of a trapezoid.
Length of mid-segment = 5.5
Height of the trapezoid =
To find:
The area of the trapezoid.
Solution:
The area of a trapezoid is:
...(i)
Where, a,b are bases and h is the vertical height.
We know that is the length of the mid-segment.
Putting M=5.5 and in (i), we get
Therefore, the area of the trapezoid is units squared.