9d=h
Needs to be 20 characters
379x=89
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379 =379
x=0.21
We don’t know the value for the population, so we must estimate the standard error using the data from the sample. Standard error = sqrt(p(1 - p)/n), where p is the proportion of yes and n is sample size. Margin of error = z* * standard error, z* = 1.64, so margin of error is 0.053. A sample size less than 10% of the population is needed to make an inference, thus, d is the correct answer. If this was confusing, please don’t hesitate to comment, hope this helps!
Answer:
<u><em>x^2 + 8x + 12</em></u>
Step-by-step explanation:
The area is in 4 parts:
x * x,
x * 2,
6 * x, and
2 * 6
So it is x^2 + 2x + 6x + 12, or
x^2 + 8x + 12
Answer:
See the table attached for a list of the dilated coordinates.
Step-by-step explanation:
Each image point will be the midpoint* of the segment joining the center of dilation with the pre-image point. Since there are so many, it is convenient to use a spreadsheet to calculate them.
- A'(-1.5, 5)
- B'(1.5, 1.5)
- C'(-1.5, 4.5)
- D'(1.5, 6)
- E'(-1.5, 2.5)
- F'(2.5, 5)
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* The points are the midpoint because the scale factor is 1/2. That is, the distance from the center of dilation (COD) in the image is 1/2 the distance from the COD to a point in the pre-image. Any midpoint is the average of the two endpoints.
Here, that means the image point is half the sum of the coordinates of the pre-image point and (-4, 2). That is what the spreadsheet calculates.