A college dormitory houses 200 students. Those who watch an hour or more of television on any day always watch for less than an hour the next day. One-fourth of those who watch television for less than an hour one day will watch an hour or more the next day. Half of the students watched television for an hour or more today. How many will watch television for an hour or more tomorrow, in 2 days, and in 40 days

Answers

Answer 1

Answer:

Tomorrow = 25 students

In 2 days = 44 students

In 40 days = 40 students

Step-by-step explanation:

Let A =  watch more than an hour

     B = watch less than an hour

First of all we need to make a transition matrix

[tex]P = \begin{bmatrix}0 & 1\\ 0.25 & 0.75\end{bmatrix} \binom{A}{B}[/tex]

Also we are given,

X = [100, 100]

       A       B

Therefore,

[tex]XP=\begin{bmatrix}100 & 100\end{bmatrix} \times \begin{bmatrix}0 & 1\\ 0.25 & 0.75\end{bmatrix}[/tex]

     = [25, 175]

Thus, 25 students will watch television for an hour or more tomorrow.

Now for 2 days,

[tex]XP^2=\begin{bmatrix}100 & 100\end{bmatrix} \times \begin{bmatrix}0 & 1\\ 0.25 & 0.75\end{bmatrix} \times \begin{bmatrix}0 & 1\\ 0.25 & 0.75\end{bmatrix}[/tex]

       = [43.75, 156.25]

Hence, 44 students will watch television for an hour or more in 2 days.

Now in 40 days,

[tex]XP^40=\begin{bmatrix}100 & 100\end{bmatrix} \times \begin{bmatrix}0 & 1\\ 0.25 & 0.75\end{bmatrix}^{40}[/tex]

But instead of multiplying the above matrix 40 times, we can we can find the long term division method.

Let

x =  long term distribution of students watching television >1 hour

y =   long term distribution of students watching television <1 hour

Therefore,

[tex]\begin{bmatrix}x & y\end{bmatrix} \times \begin{bmatrix}0 & 1\\ 0.25 & 0.75\end{bmatrix} = \begin{bmatrix}x & y\end{bmatrix}[/tex]

⇒ 0.25 y = x

And we know that x + y = 200

∴ 0.25 y + y = 200

∴ y = 160

And x = 40 ( ∵ x + y = 200)

Thus 40 students will watch televisions in the 40 days for an hour or more.


Related Questions

what is -20 and 3/4 as a decimal.

Answers

Answer:

20.75

Explanation:

20+3/4

= 20.75

= 2075

A survey conducted with 50 people on the ice cream flavor they like.It was found out that 28 like chocolate,15 like mango,and 20 likes strawberry.Futhermore,8 like chocolate and strawberry,11 like mango and strawberry,7 like chocolate and mango,and 4 people like all the 3 flavors.

Find the number of people who like.

A.Chocolate Only
B.Mango only
C.Strawberry Only
D.Chocolate and strawberry
E.None of the flavors​

Answers

Answer:

A. Chocolate Only = 17

B. Mango only = 1

C.Strawberry Only = 5

D.Chocolate and strawberry = 4

E.None of the flavors​ = 9

Step-by-step explanation:

Kindly check attached picture for detailed explanation

A set is a group of related item.

17 like chocolate only1 likes mango only5 like strawberry only4 like chocolate and strawberry only4 like  none

Let:

[tex]C \to Chocolate[/tex]

[tex]M \to Mango[/tex]

[tex]S \to Strawberry[/tex]

So, we have:

[tex]C = 28[/tex]

[tex]M = 15[/tex]

[tex]S = 20[/tex]

[tex]n(C\ n\ S) = 8[/tex]

[tex]n(M\ n\ S) = 11[/tex]

[tex]n(C\ n\ M) = 7[/tex]

[tex]All = 4[/tex]

[tex]n(U) = 50[/tex] -- the population

(a) Chocolate only.

This is calculated as:

[tex]C\ only = C - n(C\ n\ S) - n(C\ n\ M) + All[/tex]

So, we have:

[tex]C\ only = 28 - 8 - 7 + 4[/tex]

[tex]C\ only = 17[/tex]

(b) Mango Only

This is calculated as:

[tex]M\ only = M - n(M\ n\ S) - n(C\ n\ M) + All[/tex]

So, we have:

[tex]M\ only = 15 - 11 - 7 + 4[/tex]

[tex]M\ only = 1[/tex]

(c) Strawberry only

This is calculated as:

[tex]S\ only = S - n(M\ n\ S) - n(C\ n\ S) + All[/tex]

So, we have:

[tex]S\ only = 20 - 11 - 8 + 4[/tex]

[tex]S\ only = 5[/tex]

(d) Chocolate and strawberry

This has already been given as:

[tex]n(C\ n\ S)\ only=n(C\ n\ S) - All[/tex]

[tex]n(C\ n\ S)\ only=8 - 4[/tex]

[tex]n(C\ n\ S)\ only = 4[/tex]

(e) None

See attachment for the Venn diagram that represents the set

Subtract the sum of all the numbers in the Venn diagram from the total (50)

[tex]None = 50 - (17 + 1 + 5 + 4 + 4 + 7 + 3)[/tex]

[tex]None = 9[/tex]

Read more about sets at:

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simplify the following expression: -10x + 15 - 3x + 2 *

Answers

= -10x+15-3x+2
= -13x+17

yesterdays world cup final had a viewing figures of 138,695,157. what is the value of the 3?​

Answers

Answer:

The number is 138,695,157.

If you want to know the value of a particular number, then follow the steps:

1) Start at the decimal point (in the right) and count the places until you reach the desired number.

For example, the 3 is in the 8th position, so here we take n = 8.

2) Now that you find n, multiply your number by 10^(n-1)

in this case we have:

3*10^(8 - 1) = 3*10^7 → (this means that you add 7 zeros at the right of the 3)

                     3*10^7 = 30,000,000

So that is the value of the 3 in the given number. (3 ten-millions)

246/35 simplified to a whole number

Answers

Answer:

About 7

Step-by-step explanation:

245/35 = 7

So, 246/35 = 7.02, which is about 7.

Hope this helps!

Plz name brainliest if possible!

The heights of four students are 148.5 centimeters, 146.9 centimeters, 148.2 centimeters, and 148.75 centimeters. Kylie is the tallest. Elly is taller than Jessica, but shorter than Elizabeth. Jessica is the shortest. What is Elizabeth’s height?

Answers

Elizabeth’s height is 148.5 centimeters.

If Kylie is the tallest, she would be 148.75.
That leaves the other three heights.
Elly is taller than Jessica, which means that she could either be the second or third tallest. Then it is revealed that Elly is also shorter than Elizabeth, meaning that she must be the third tallest, meaning Ellys height would be 148.2.
Jessica is the shortest, at 146.9.

That leaves one height, 148.5, which is Elizabeth’s.

Lcm of 12,16,24,32,36

Answers

Answer:

288

Step-by-step explanation:

24 is a multiple of 12, and 36 is a multiple of 12, so the LCM of 24, 32, and 36 will also be the LCM for 12 and 16.

24 = 2^2 * 3

32 = 2^5

36 = 2^2 * 3^2

LCM = 2^5 * 3^2

LCM = 288

Picture should be uploaded

Answers

Answer:

5/8

Step-by-step explanation:

There are 4 possible outcomes on the first spinner and 4 outcomes on the second spinner for 4*4 = 16 outcomes

We want 5 or more

1+4

2+3

2+4

3+2

3+3

3+4

4+1

4+2

4+3

4+4

These are the positive outcomes  10

10/16 = 5/8

Find the quotient (-6) divided by (-7)

Answers

Answer:

I got a decimal

Step-by-step explanation:

0.857142857

Answer:

Step-by-step explanation:

Complete the sentence to make it true statements 6 is 100 times

Answers

Answer:

6 is 100 times 0.06

Step-by-step explanation:

0.06 times 100 = 6

The answer would be 6

Point C is located at (2,8). If it is reflected across the x axis, where will C be located?

Answers

Answer:

(2, -8)

Step-by-step explanation:

The answer is (2, -8) because when you reflect a point across the x-axis, the x-coordinate always remains the same, but the y-coordinate will change. In other words, the y-coordinate becomes the opposite (signs change). In this case, since the y-coordinate was positive 8, when you reflect the point across the x-axis, the y-coordinate will change to -8

This answer is 2, -7


I think
Good luck :)

Help me out 25 points

Answers

Answer: Can you give more details

Step-by-step explanation:

PLEASE SEND HELP!!! I need to finish this test in 20 minutes.

Answers

Answer:

b

Step-by-step explanation:

this is the answer

15 Points!!! Which system of inequalities is shown?

a. y < x
y > 2

b. y < x
y < 2

c. y > x
y < 2

d. y > x
y > 2

Answers

Answer:

they are equal so what one shows that they rise 2 run 2

Step-by-step explanation:

The correct option is Option A: The system of inequalities that are shown within the graph are in y < x and y > 2.

What is inequality?

Inequality means the relation that creates a non-equal comparison between two numbers or other expressions. It is the condition of unequalness. A system of inequalities is a set of two or more inequalities in one or more than one variables.

According to the question,

For the given condition,

The graph basically shows the inequality relationship between x and y.

The correct system of inequality is found by plotting all the choices within the graph.

The graph below shows the system of inequalities as shown for the expression,

Therefore, the system of inequalities that are shown within the graph is in option (a) i.e y < x and y > 2.

To learn more about the System of inequalities click here

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The midpoint of GH are M(4,3) and D(5,-6). The coordinates of the endpoint are?

Answers

Answer:

The endpoint coordinates are (3,12)

Step-by-step explanation:[tex]\frac{5+x^{2} }{2} =4[/tex] [tex]\frac{-6+y^{2} }{2} = 3[/tex]

You multiply 4 by 2 which gives you 8 and write the equation[tex]5+x^{2} =8[/tex] then you subtract 5 from 8 to get 3 for the x coordinate.

You multiply 3 by 2 which gives 6 and writhe the equation[tex]-6+y^{2}=6[/tex] then you substitute the -6 for +6 and add +6 and 6 to get 12 for the y coordinate.

To check use the midpoint formula with coordinates D and your endpoint coordinates[tex]\frac{5+3}{2}=\frac{8}{2} =4 \\[/tex]  [tex]\frac{-6+12}{2} =\frac{6}{2} =3[/tex] and you get the answer for the midpoint which is (4,3)

Rearrange the equation to isolate a . (a+bc)(d−e)=f

Answers

Answer:

a =  cf - b(d-e)

        c(d-e)

Step-by-step explanation:

Kindly check correct question as attached!

Solution

(a+b/c)(d-e) = f

a + b/c = f/d-e

a = [f/d-e] - [b/c]

Lcm = c(d-e)

a =  cf - b(d-e)

        c(d-e)

The equivalent value of the expression is a = [ f / ( d - e ) ] - ( b/c )

Given data ,

Let the equation be represented as A

Now , the value of A is

( a + b/c ) ( d - e ) = f

On simplifying the equation , we get

( a + b/c ) ( d - e ) = f

So , the left hand side of the equation is equated to the right hand side by the value of f

Divide by ( d - e ) on both sides , we get

a + b/c = f / ( d - e )

Subtracting b/c on both sides , we get

a = [ f / ( d - e ) ] - ( b/c )

a = [ f / ( d - e ) ] - ( b/c )

Therefore , the value of a = [ f / ( d - e ) ] - ( b/c )

Hence , the expression is a = [ f / ( d - e ) ] - ( b/c )

To learn more about equations click :

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While hiking Sam ate 2/3 cup of nuts, Jordan ate 1/10 of a cup. How much more did Sam eat than Jordan.

Answers

Answer:

17/30

Step-by-step explanation:

2/3-1/10=

20/30-3/30=

17/30

Last year a restaurant chain spent 3.3 X 106 dollars
opening new restaurants. This year the restaurant will
spend 9.9 X 105 dollars. Which statement is true?

А The restaurant spent $330,000 dollars last year.

B This year the restaurant will spend $9,900,000.

C The restaurant spent 6.6 X 106 dollars more this
year than last year.

D This year the restaurant will spend about 0.3 times
the amount it did last year.

HELP

Answers

i think the answer is d

GH =*
Help I’m trying to Gh, I need help bad

Answers

Answer:

11

Step-by-step explanation:

I just assumed D is the midpoint; and if D is the midpoint,

GD=DH, GD+DH=GH

5.5+5.5=11

Please help!!!!!
Turner treated his sister to lunch while visiting her in springdale. their lunch cost $400. and the sales tax in springdale is 11% if turner left an 18% tip on the $400, how much in total did he pay​

Answers

Answer:

$516

Step-by-step explanation:

Price of lunch: $400

Sales tax: 11% of $400

Tip: 18% of $400

The sales tax and tip combined were 29% of $400 since 11% of $400 + 18% of $400 = 29% of $400.

We calculate the combined sales tax and tip:

29% of $400 =

= 0.29 * $400

= $116

The combined sales tax and tip were $116.

Now we add the combined sales tax and tip to the $400 price of dinner.

total = $400 + $116

total = $516

You earn $106.25 for working 17 hours. What is
your hourly wage

Answers

Answer:YAY

Step-by-step explanation: :)

9. Hannah solved an equation as shown below.
4(x - 6) = 14
4x – 24 = 14
4x = 38
19
X=-
2
In her solution, Hannah applied three properties:
1. Division Property of Equality
II. Addition Property of Equality
III. Distributive Property
In which order did she use the properties?
a) I, II, III
c) III, II, I
b) II, III, I
d) III, I, II

Answers

the answer is c. distributive, addition, then division.

A pool player located at x wants to shoot the white ball off the top cushion and hit the red ball dead center. he knows from physics that the white ball will come off a cushion at the same angle as it hits a cushion. where on the top cushion should he hit the white​ ball?

Answers

Answer:

6ft

Step-by-step explanation:

Which option completes the explanation for conflict of interest in an organization?
The organization wants you to avoid situations that make you choose between its overall benefit and your _______

Answers

Answer:

personal gain

Step-by-step explanation:

it was on a quizlet flashcard

Carmen has taken out a loan for $800 to buy a car. She plans to pay back the loan at a rate of $40 per month. Ramona has borrowed $500 to buy a car, which she plans to pay back at a rate of $20 per month. How long will it take Carmen to pay back her loan?

Answers

Answer:

800 ÷ 40

=20

It will take Carmen 20 to pay back her loan

Answer:

20 Months

Step-by-step explanation:

800 / 40 = 20

Clint and Max worked out at the gym together today. Clint works out at the gym every 4 days. Max works out at the gym every 6 days. How many days until they both work out at the gym on the same day again?

Answers

Answer:

24 days

Step-by-step explanation:

To determine the number of days until they both work out at the gym on the same day again,

Find the lowest common multiples of 4 days and 6 days

Clint (4 days) = 8, 12, 16, 20, 24, 28, 32

Max (6 days) = 12, 18, 24, 30, 36, 42

The lowest common multiple of ,4 days and 6 days is 24 days

Therefore, the number of days until they both work out at the gym on the same day again is 24 days

Answer:

no its not 24 its 12

Step-by-step explanation:

6 plus 6 is12 and clint has to work 8 more days to get to 12

I need help simplifying -10x-x​

Answers

Answer and Step-by-step explanation:

-11x

You just combine all your like terms together and it should leave you with -11x

Hope you found this helpful! ^-^

Algebraic expression is what I NEED Your summer job pays $8.25 per hour and you must pay for a company shirt that costs $15. If your work x hours per week, how much will you make during the first week? NEEDED NOW!!!

Answers

Answer:

y=8.25x-15

Step-by-step explanation:

From the information provided, the algebraic expression will need to indicate that your earnings during the first week, y, would be equal to multiplying $8.25 for the number of hours, x, minus $15. According to that, the algebraic expression is:

y=8.25x-15

A taxi company states that a driver drives about 575 miles per day and that this amount can vary by as much as 45 miles. What are the maximum and minimum numbers of miles a driver will drive in a day?

Answers

Answer:

323

Step-by-step explanation:

You earn 5% commission on the first $2000 of sales and 8% commission on all sales over $2000. If you sold $7740, what is your total commission?

Answers

Answer:You earn 5% commission on the first $2000 of sales and 8% commission on all sales over $2000. If you sold $7740, what is your total ...

Step-by-step explanation:

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