4 – 3(x – y) = –8x + 2
Apply distributive property to left side.
4 - 3x + 3y = -8x + 2
Add 8x to both sides.
4 + 5x + 3y = 2
Subtract 4 from both sides.
5x + 3y = -2
<h3><u>The correct answer is C.</u></h3>
Answer:
Step-by-step explanation:
From the information given,
Number of personnel sampled, n = 85
Mean or average = 6.5
Standard deviation of the sample = 1.7
We want to determine the confidence interval for the mean number of years that personnel spent in a particular job before being promoted.
For a 95% confidence interval, the confidence level is 1.96. This is the z value and it is determined from the normal distribution table. We will apply the following formula to determine the confidence interval.
z×standard deviation/√n
= 1.96 × 6.5/√85
= 1.38
The confidence interval for the mean number of years spent before promotion is
The lower end of the interval is 6.5 - 1.38 = 5.12 years
The upper end is 6.5 + 1.38 = 7.88 years
Therefore, with 95% confidence interval, the mean number of years spent before being promoted is between 5.12 years and 7.88 years
Answer:
The answer is y = -3x - 2.
Step-by-step explanation:
Given that in slope-form equation, m represents gradient and c is y-intercept. So you have to sbustitute the values into the equation :
![y = mx + c](https://tex.z-dn.net/?f=y%20%3D%20mx%20%2B%20c)
![let \: m = - 3 \\ let \: c = - 2](https://tex.z-dn.net/?f=let%20%5C%3A%20m%20%3D%20%20-%203%20%5C%5C%20let%20%5C%3A%20c%20%3D%20%20-%202)
![y = - 3x - 2](https://tex.z-dn.net/?f=y%20%3D%20%20-%203x%20-%202)
Answer:
.3
Step-by-step explanation:
A|B (A given b)= (A and b)/b
so
Sore throat|Fever= sore throatand fever/fever
.21/.7= .3