Somebody, please help a brother out :))
2 answers:
Answer:
Step-by-step explanation:
When a point is rotated 90 degrees counterclockwise, there is a change in coordinates. The coordinates will change thus:
What is means is that after rotation, the vertical component becomes the new horizontal component and the new vertical component is the additive inverse of the old horizontal component.
We will now establish the coordinates of our point and apply the transformation.
Let us call the vertices of the triangle ABC:
Transforming by interchanging (x, y) to (y, -x), we get:
The graph is drawn below:
(The answer belongs to the tutor IfeanyiNnoluka)
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Answer:
The 90% confidence interval for the population proportion who knew about the incentives is (0.28, 0.44).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
For this problem, we have that:
90% confidence level
So , z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:
The upper limit of this interval is:
The 90% confidence interval for the population proportion who knew about the incentives is (0.28, 0.44).
Answer: C, E, F
Step-by-step explanation:
- Plug in the "x" and "y" values from the ordered pairs into the equation.
- For A: 3 =
→ 3 ≠ 1 → A is eliminated.
- For B: 5 =
→ 5 ≠
→ B is eliminated.
- For C: 2 =
→ 2 = 2 → C satisfies the equation.
- For D: 10 =
→ 10 ≠
→ D is eliminated.
- For E: -1 =
→ -1 = -1 → E satisfies the equation.
- For F: 3 =
→ 3 = 3 → F satisfies the equation.
- Therefore, C, E, and F are the answers.