The correct answer is option 4! you have a good day as well
Answer:
<h2>Neither Gustavo nor Yuki</h2>
Step-by-step explanation:
It's an arithmetic sequence.
![0-19=-19\\-19-0=-19\\-38-(-19)=-38+19=-19](https://tex.z-dn.net/?f=0-19%3D-19%5C%5C-19-0%3D-19%5C%5C-38-%28-19%29%3D-38%2B19%3D-19)
The difference is constant.
The explicit formula of an arithmetic sequence:
![a_n=a_1+(n-1)d](https://tex.z-dn.net/?f=a_n%3Da_1%2B%28n-1%29d)
Substitute:
![a_1=19,\ d=-19](https://tex.z-dn.net/?f=a_1%3D19%2C%5C%20d%3D-19)
<em>use distributive property</em>
![a_n=19-19n+19\\\\a_n=(19+19)-19n\\\\a_n=38-19n](https://tex.z-dn.net/?f=a_n%3D19-19n%2B19%5C%5C%5C%5Ca_n%3D%2819%2B19%29-19n%5C%5C%5C%5Ca_n%3D38-19n)
Answer:
11
Step-by-step explanation:
Constant of proportionality, k, is the ratio of the quantity of variable y to the quantity of variable x.
Using a point on the line, (4, 44),
Constant of proportionality, k =
.
Constant of proportionality of the graph is 11.
Answer:
I think that the answer is -12/47
Answer:
The percentage of the students scored higher than 89% is 15.87%
Step-by-step explanation:
we are given
The average test scores for a particular test in algebra was 84
so, mean is 84
![\mu=84](https://tex.z-dn.net/?f=%5Cmu%3D84)
a standard deviation of 5
so,
![\sigma=5](https://tex.z-dn.net/?f=%5Csigma%3D5)
we have
x=89
now, we can use z-score formula
![z=\frac{x-\mu}{\sigma}](https://tex.z-dn.net/?f=z%3D%5Cfrac%7Bx-%5Cmu%7D%7B%5Csigma%7D)
now, we can plug values
![z=\frac{89-84}{5}](https://tex.z-dn.net/?f=z%3D%5Cfrac%7B89-84%7D%7B5%7D)
![z=1](https://tex.z-dn.net/?f=z%3D1)
now, we can use calculator
and we get
![p(z>1)=0.1587](https://tex.z-dn.net/?f=p%28z%3E1%29%3D0.1587)
So,
The percentage of the students scored higher than 89% is 15.87%