Answer:
plz mark me as brainleist
Step-by-step explanation:
Answer: (c)
Step-by-step explanation:
Given
The function is ![y=-x^2+6x-4](https://tex.z-dn.net/?f=y%3D-x%5E2%2B6x-4)
Range of a function describes the values y can take
from the graph it is clear that the maximum value of y is 5
![\therefore y\leq5](https://tex.z-dn.net/?f=%5Ctherefore%20y%5Cleq5)
Hence. option (c) is correct.
We have been given that a set of art exam scores are normally distributed with a mean of 81 points and a standard deviation of 10 points. Kamil got a score of 78 points on the exam. We are asked to find the proportion of exam scores that are lower than Kamil's score.
First of all, we will find z-score corresponding to 78.
, where,
z = z-score,
x = Random sample score,
= Mean,
= Standard deviation.
![z=\frac{78-81}{10}](https://tex.z-dn.net/?f=z%3D%5Cfrac%7B78-81%7D%7B10%7D)
![z=\frac{-3}{10}](https://tex.z-dn.net/?f=z%3D%5Cfrac%7B-3%7D%7B10%7D)
![z=-0.3](https://tex.z-dn.net/?f=z%3D-0.3)
Now we will use normal distribution table to find the probability under a z-score of
that is
.
![P(z](https://tex.z-dn.net/?f=P%28z%3C-0.3%29%3D0.38209)
Upon rounding to 4 decimal places, we will get:
![P(z](https://tex.z-dn.net/?f=P%28z%3C-0.3%29%5Capprox%200.3821)
Therefore,
of exam scores are lower than Kamil's score.
Answer:
2.04 km
Step-by-step explanation:
there are 1,000 m in 1 km
she was 680 x 3 meters = 2,040 m
2,040 m = 2.04 km
How do you write a polynomial function in standard form with the given zeros. ( with steps please )