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2 years ago

8

The top of a 25-foot ladder is sliding down a vertical wall at a constant rate of 3 feet per minute. When the top of the ladder

is 7 feet from the ground, what is the rate of change of the distance between the bottom of the ladder and the wall?.

1 answer:

zepelin [54]2 years ago

3 0

Answer:7/8 feet per minute

Explanation:

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There are 28 seats in the front row of a theater each successive row contains two more seats than th

Vinvika [58]

Answer:

74

Explanation:

28+2*(24-1)= 74

Given:- There are 28 seats in the front row of theater

Number of rows=24

To find:- The number of seats in the last row.

Use the formula to find the 24th term of this sequence.

Also each successive row has two more seats. This difference is same for the whole theater.

So, this forms an arithmetic sequence.

a1=21

D=2

We need to find number of seats in 24th row; which is given by a24

We use the formula for it

8 0

2 years ago

Select two symbols that represent a statistic.

Anna35 [415]

<h3>Answers: Choice B and Choice C</h3>

========================================================

Explanation:

The symbol $\mu$ or mu represents the population mean, which is a parameter.

The symbol $\sigma$ or sigma represents the population standard deviation, which is also a parameter. The same goes for the symbol p, without any hat on top, as it is the population proportion.

If something represents a population data item, then it's automatically a parameter. It might help to think both words "population" and "parameter" start with the letter P.

Based on those previous paragraphs, we can rule out choices A, D and E. Those three items are parameters. This leaves <u>choices B and C</u> as our final answers.

$\overline{x}$ or xbar is a sample statistic, and it represents an estimate of the population mean. Similarly, $\hat{p}$ or p-hat is the sample proportion and it represents an estimate of the population proportion. These are considered unbiased estimators.

Another example of an unbiased estimator is the variable s which represents the sample standard deviation and it estimates the value of sigma. All of these estimators have one thing in common: they are based on a sample, which in turn tries to predict what the corresponding population value is. In other words, the statistic's job is to estimate the parameter.

Below is a reference table for all of the items mentioned.

8 0

2 years ago

Ten year old madison was riding her brand new scooter

shutvik [7]

Answer:to get a new pair of shoes

Explanation:because she needs them for her mom to remind her of the marraige that her mom and her dad used to have now that her mom and her dad are going through things now she thinks that they are going to break up when they really arent

4 0

2 years ago

There are 23 countries in North America, 12 countries in South America, 47 countries in Europe, 44 countries in Asia, 54 countri

natta225 [31]

The probability for each event follows below:

P(A)= 0.23

P(E)= 0.24

P(F)= 0.28

P(N)= 0.12

P(O)= 0.07

P(S)= 0.06

<h3>Probability</h3>

Probability can be defined as the possibility that an event will occur. For an event, the probability can be found from the ratio between the number of favorable outcomes for the event and the total number of outcomes. Values of probability vary between 0 and 1.

A probability for an event is represented by P(A), P(B), etc. And exactly this that question asks for you.

1. Arrange the text of the question

North America=23 countries

South America= 12 countries

Europe= 47 countries

Asia= 44 countries

Africa =54 countries

Oceania= 14 countries

2. Find the total of countries

$N_{total}=23+12+47+44+54+14=194$

3. Find P(A)

A= the event that a country is in Asia= 44 countries. Therefore,

$P(A)=\frac{numberofcountries of Asia}{Total number of countries } \\ \\ P(A)=\frac{44}{194} =0.23\\ \\ P(A)=0.23$

4. Find P(E)

E= the event that a country is in Europe= 47 countries. Therefore,

$P(E)=\frac{numberofcountries of Europe}{Total number of countries } \\ \\ P(E)=\frac{47}{194} =0.24\\ \\ P(E)=0.24$

5. Find P(F)

F= the event that a country is in Africa= 54 countries. Therefore,

$P(F)=\frac{numberofcountries of Africa}{Total number of countries } \\ \\ P(F)=\frac{54}{194} =0.28\\ \\ P(F)=0.28$

6. Find P(N)

N= the event that a country is in North America= 23 countries. Therefore,

$P(N)=\frac{numberofcountries of North America}{Total number of countries } \\ \\ P(N)=\frac{23}{194} =0.12\\ \\ P(N)=0.12$

7. Find P(O)

O= the event that a country is in Oceania= 14 countries. Therefore,

$P(O)=\frac{numberofcountries of Oceania}{Total number of countries } \\ \\ P(O)=\frac{14}{194} =0.07\\ \\ P(O)=0.07$

8. Find P(S)

S= the event that a country is in South America= 12 countries. Therefore,

$P(S)=\frac{numberofcountries of South America}{Total number of countries } \\ \\ P(S)=\frac{12}{194} =0.06\\ \\ P(S)=0.06$

Learn more about probability here:

brainly.com/question/19916581

7 0

1 year ago

In which way was the issue of women's suffrage tied to industrialization.

Alexxandr [17]

Answer:Women were being left at home more frequently as men went off to factories.Explanation:Female suffrage or female vote refers to the right to vote exercised by women and therefore the political and constitutional right to vote for elected public office as well as to be voted. The suffrage therefore covers the asset, which determines who is entitled to exercise the vote as the so-called liability, which refers to who and under what conditions they have the right to be elected. The founding moment of Sufragismo was in 1848 with the Declaration of Feelings of Seneca Falls in the United States and culminated a hundred years later, in 1948, with the Universal Declaration of Human Rights that recognizes women's suffrage as a universal human right.

6 0

2 years ago