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ludmilkaskok [199]
3 years ago
13

Two sevenths of the crowd cheered Wiley. The rest of the crowd stood quietly. What fraction of the crowd stood quietly.

Mathematics
2 answers:
Aleonysh [2.5K]3 years ago
7 0
2/7 - 7/7 = 5/7

5/7 of the crowd stood quietly
viva [34]3 years ago
6 0
I am thinking 5/7 because if there is 7/7 crowd, and 2/7 is cheering, then 7/7 - 2/7 = 5/7
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Laney is ordering books while she is on summer vacation. Reader's Book Club charges $4.00 per book and requires a one-time membe
bonufazy [111]

Answer:

12 + 4b < 7.50b

Step-by-step explanation:

Given

Reader' Book Club

Membership = \$12

Book = \$4.00 per book

Perfect Page

Book = \$7.50 per book

Required

Write an inequality to represent the situation

<em>Represent the number of books with b</em>

First, we need to write an expression for Reader's book

This is:

= Membership + Books Read

12 + 4b

For Perfect Page

This is

= Books Read

7.50b

For Reader's club to be less than Perfect Page, we have:

12 + 4b < 7.50b

8 0
2 years ago
. An official for the department of transportation counted the number of vehicles that passed through a busy intersection. He co
gayaneshka [121]
When dealing with a pool of data, the field of study is called statistics. This refers to the study of sample data and how they correlate it with the overall trend of the population. By doing this, they use terms that can best represent the sample data. These three are the most common:

1. Mean - this is the arithmetic average of the data

Mean = (<span>8+41+25+9+22+36+24+13+25+28)/10 = 23.1

2. Mode - this is the most frequent data point that can occur. In this case, the mode is 25 because it occurred twice.

3. Median - this is the middle of the sample data arranging it from least to greatest. In this case: 8, 9, 13, 22, 24, 25, 25, 28, 36, 41. The middle number is 25. Thus, the median is 25.</span>
7 0
3 years ago
I need help pleaseee!!
solong [7]

Answer:

y=60^\circ

Step-by-step explanation:

m\angle y\:=\:\frac{1}{2}\:m \angle {120^\circ}\\\\=60^\circ

Best Regards!

8 0
2 years ago
Evaluate the expression when, m=-2<br><br> m²-6m-5<br><br> (Thank you for your help!)
Darina [25.2K]

Answer:

11

Step-by-step explanation:

m=-2\\m^2-6m-5\\=(-2)^2-6(-2)-5\\=4-(-12)-5\\=4+12-5\\=16-5\\=11

7 0
2 years ago
According to a Pew Research Center, in May 2011, 35% of all American adults had a smart phone (one which the user can use to rea
Veronika [31]

Answer:

p_v =P(z>1.82)=0.034  

Assuming a standard significance level of \alpha=0.05 the best conclusion for this case would be:

4. There is not enough evidence to show that more than 35% of community college students own a smart phone (P-value = 0.034).

Because p_v

If we select a significance level lower than 0.034 then the conclusion would change.

Step-by-step explanation:

Data given

n=300 represent the random sample taken

X=120 represent the people who have a smart phone

\hat p=\frac{120}{300}=0.4 estimated proportion of people who have a smart phone

p_o=0.35 is the value that we want to test

z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

System of hypothesis

We need to conduct a hypothesis in order to test the claim that the true proportion of people who have a smart phone is higher than 0.35, the system of hypothesis are.:  

Null hypothesis:p\leq 0.35  

Alternative hypothesis:p > 0.35  

The statistic is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Calculate the statistic  

Since we have all the info requires we can replace in formula (1) like this:  

z=\frac{0.4 -0.35}{\sqrt{\frac{0.35(1-0.35)}{300}}}=1.82  

Statistical decision  

Since is a right tailed test the p value would be:  

p_v =P(z>1.82)=0.034  

Assuming a standard significance level of \alpha=0.05 the best conclusion for this case would be:

4. There is not enough evidence to show that more than 35% of community college students own a smart phone (P-value = 0.034).

Because p_v

If we select a significance level lower than 0.034 then the conclusion would change.

4 0
2 years ago
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