Answer:
2.4103
Step-by-step explanation:
The first step in evaluating the sample standard deviation of a data set involves the determination of the sample mean.
The sample mean is simply the average value of the data set;
sample mean =
The next step is to evaluate the sum of the squares of deviations from the mean;
sum of squares of deviation =
We then divide the sum of squares of deviation by (n-1) where n is the sample size to obtain the sample variance;
variance =
The standard deviation is simply the square-root of variance;
Answer:
50 square ft
Step-by-step explanation:
Answer: -4/3x +4=y
Step-by-step explanation:
y=mx+b
Measure of linear pair A and B are 86 and 38 respectively.
Let the measure of B = x
And measure of A = 3x – 28
As A and B are linear pair. Therefore their sum will be equal to 180
That is numerically,
A + B = 180
Putting the required values of A and B we will get
3x – 28 + x = 180
4x = 180-28
4x = 152
x = 38
Hence the measure of A = 3*38 – 28 = 86
And the measure of B = x = 38
Learn more about linear pair here : brainly.com/question/18944511
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Answer:
Step-by-step explanation:
-6x + y = 4
<u>6x - 2y = -2 </u>+
-y = 2
y = -2
.
Substitute the value of y to the one of equations
6x - 2y = -2
6x -2(-2) = -2
6x + 4 = -2
6x = -2 - 4
6x = -6
x = -1