IM CONFUSED.
Are u supposed to solve it or leave it as an expression. 4/8r - 3 1/2
It should be D. You can multiply both numbers by 10 in order to make it in proportion to the graph. Hope this helps:)
The range of the means is 0.5
<h3>How to find the mean</h3>
Mean of S1
= 5 + 6+ 6+ 2
= 19/4
= 4.75
Mean of S2
= 4 + 8 + 4 + 3
= 19/4
= 4.75
Mean of s3
= 4 + 2 + 6+ 5
= 17/4
= 4.25
Range of sample means = 4.75 - 4.25
= 0.5
c. the true statements here is that
- The closer the range of the sample means is to 0, the more confident they can be in their estimate.
- The mean of the sample means will tend to be a better estimate than a single sample mean.
Read more on mean here:
brainly.com/question/6281520
#SPJ1
Answer:
When we have a rectangle of length L and width W, the area is calculated as:
A = W*L
In this case, W = x, and the area is:
A = 2*x
Then we must have L = 2.
We know that the area of the window and the frame (together) is:
a = 2*x^2 + 12*x + 16
The area of the frame alone, will be equal to the difference between the area of both objects (a) and the area of the window alone (A)
area of the frame = a - A
= (2*x^2 + 12*x + 16) - (2*x) = (2*x^2 + 10*x + 16)
This is the area of the frame