Answer:
the y-coordinate of a point where a line, curve, or surface intersects the y-axis
Answer:
29.2
Step-by-step explanation:
Mean = 21.4
Standard deviation = 5.9%
The minimum score required for the scholarship which is the scores of the top 9% is calculated using the Z - Score Formula.
The Z- score formula is given as:
z = x - μ /σ
Z score ( z) is determined by checking the z score percentile of the normal distribution
In the question we are told that it is the students who scores are in the top 9%
The top 9% is determined by finding the z score of the 91st percentile on the normal distribution
z score of the 91st percentile = 1.341
Using the formula
z = x - μ /σ
Where
z = z score of the 91st percentile = 1.341
μ = mean = 21.4
σ = Standard deviation = 5.9
1.341= x - 21.4 / 5.9
Cross multiply
1.341 × 5.9 = x - 21.4
7.7526 = x -21.4
x = 7.7526 + 21.4
x = 29.1526
The 91st percentile is at the score of 29.1526.
We were asked in the question to round up to the nearest tenth.
Approximately, = 29.2
The minimum score required for the scholarship to the nearest tenth is 29.2 .
Answer:
E = number of Ella's stories
A = number of Anna's stories
E = A + 8
if A = 10, then
E = 10 + 8
E = 18
<em>x = 1</em>
<em><u>Here is why:</u></em>
![-x-1=3x-5](https://tex.z-dn.net/?f=-x-1%3D3x-5)
Add x to both sides.
![-1=4x-5](https://tex.z-dn.net/?f=-1%3D4x-5)
Add 5 to both sides.
![4=4x](https://tex.z-dn.net/?f=4%3D4x)
Divide.
x = 1
The quantitative relation between two amounts showing the number of times one value contains or is contained within the other.