What’s the value of DCB?<br> Pls help

Help!!!!!!!!!!!!!!!!!!!

brilliants [131]

Answer: -14

Step-by-step explanation: This is right bro. 100%

4 0

2 years ago

Read 2 more answers

Karen is typing a report.she typed 3/8of the pages in the report in the morning and 2/5 of the pages in the afternoon.what fract

Karolina [17]

Simple...

you have $\frac{3}{8}$ and $\frac{2}{5}$

Just subtract...but first find a common denominator...

Use 40 as the common denominator...

$\frac{3}{8} * \frac{5}{5} = \frac{15}{40}$
and
$\frac{2}{5} * \frac{8}{8} = \frac{16}{40}$

So, subtract,

$\frac{15}{40}
-
 \frac{16}{40}$

= $- \frac{1}{40}$

Thus, your answer.

4 0

3 years ago

A political scientist wants to know how college students feel about the Social Security system. She obtains a list of the 3456 u

Marina CMI [18]

Answer:

For this case the population is described as:

All the college students

And the political have a list of 3456 undergraduates at her college for the sampling frame.

The sample would be the 104 students who return the survey.

Is important to notice that since he know the information about her college she can apply inference about the parameter of interest just at her college and not about all the possible students of college.

Step-by-step explanation:

For this case the population is described as:

All the college students

And the political have a list of 3456 undergraduates at her college for the sampling frame.

The sample would be the 104 students who return the survey.

Is important to notice that since he know the information about her college she can apply inference about the parameter of interest just at her college and not about all the possible students of college.

For this case we can also find the non reponse rate since we know that the total of questionnaires are 250 and she got back just 104 answered

$Non-resp. = \frac{250-104}{250} = \frac{146}{250}= 0.584$