Answer:
Number of students ; 60
Explanation:
Using the formula for p +- z * Sqrt ( pq/n )
Let us first calculate the Margin of Error
= 0.816 –0.7 = 0.116
•z* = 1.96
P = (0.584 + 0.116 ) = 0.7
Q = 1- p = 1 – 0.7 = 0.3
Now inserting the values in the formula; we get
0.116 = 1.96 x sqrt { ( 0.7 x 0.3) / n }
Solving the above equation
N = 60 (rounded off to nearest number)
Hence the number of students that were selected by the environmental teacher in the sample is 60
They could emphasize their contributions to the productivity of Congress in recent years, which is the statement that best identifies and improves the chances of winning reelection for congressional incumbents. Thus, the correct option is B.
<h3>What does the given graph signify?</h3>
The graph given below signifies the percentage of registered voters with respect to the percentage of voters favoring the reelection of congressional incumbents.
It also reveals the support get from voters to the most members of Congress and other US representatives of the district.
To improve the chances of winning reelection, it is required to emphasize the contribution, productivity, and manifesto based on recent years since 2000.
Therefore, the correct option for this question is B.
To learn more about congressional incumbents, refer to the link:
brainly.com/question/9560457
#SPJ1
Answer:
2y=8-x
y-2x=-1
y-2x=-1
y = 2x-1
Substitute for y in the 1st
2(2x-1)=8-x
4x-2=8-x
5x = 10
x = 2
y=2x-1
y = 3
Explanation:
2y=8-x
y-2x=-1
------------
Rearrange:
x = 8-2y
y = 2x-1
------------
Substitute to get:
y = 2(8-2y)-1
y = 16-4y-1
5y = 15
y = 3
-------------------
Substitute to solve for "x":
x = 8-2(3)
x = 2
