Answer:

Step-by-step explanation:
Since the sample size is quite large, we can use the z-distribution.
The margin of error is given by

Where n is the sample size, s is the sample standard deviation and
is the z-score corresponding to a 90% confidence level.
The z-score corresponding to a 90% confidence level is
Significance level = α = 1 - 0.90= 0.10/2 = 0.05
From the z-table at α = 0.05
z-score = 1.645

Therefore, the margin of error is 0.776.
Answer:
Step-by-step explanation:
A=1
B=41
C=3
Answer:
-100
Step-by-step explanation:
(-13-8)2^2
-25*4=-100
Answer:
16.) second choice: (5,-6)
17.) third choice: (-10) (-8) (-5) (0) (1)
18.) fourth choice: (.18) (0.4) (1/4) (227)
The standard form: Ax + By = C.
The point-slope form:

7. We have the points (4, -7) and (2, -3). Substitute:

8. We have the points (1, 5) and (-10, -6). Substitute:
