Answer:
1hr 30mins
Step-by-step explanation:
if u do
3:30-4:30 its 1 hr
4:40-5:00 is half an hour (30mins)
1. Si las notas de Esteban en una asignatura son: 3, 4, 6, 3, 5, 5, 6, 3, 4 y de estas notas se cambia un 6 por un 7, ¿cuál(es) de las siguientes medidas de tendencia central cambia(n)? I. La moda. II. La mediana. III. La media aritmética (promedio).
Responder:
Media
Explicación paso a paso:
Primero debemos saber que cambiar el valor de 6 a 7 no puede cambiar la mediana y la moda de los datos, ya que la moda es el valor que más ocurre, que es 3, mientras que la mediana es el valor tq en el medio después del reordenamiento.
La única medida de tendencia que cambiará es la media (datos promedio)
Vamos a revisar
Encuentra la media de dos datos originales
Media = 3, + 4, + 6 + 3, + 5 + 5 + 6 + 3 + 4/9
Tamaño de muestra = 9
Media = 39/9
Media = 4,33
Si uno de los 6 se reemplaza por 7, la media se convierte en
Media = 3, + 4, + 6 + 3, + 5 + 5 + 7 + 3 + 4/9
Tamaño de muestra = 9
Media = 40/9
Media = 4,44
Podemos ver que cambió el valor medio. Por tanto, la respuesta correcta es la media.
Teniendo en cuenta la definición de media, mediana y moda, la media aritmética es la única medida de tendencia central que cambia.
Media aritméticaLa media (también llamada promedio o media aritmética) de un conjunto de datos es una medida de posición central cuyo valor se obtiene al dividir la suma de todos los números entre la cantidad de ellos. Entonces, en este caso, el promedio de las notas obtenidas por Esteban se calcula como:
[tex]media=\frac{3+4+6+3+5+5+6+3+4}{9}[/tex]
Resolviendo:
media= 4,33
La media aritmética de las notas de Esteban es 4,33.
Si de las notas de Esteban se cambia un 6 por un 7, se obtiene la serie de notas:
3, 4, 7, 3, 5, 5, 6, 3, 4
Entonces, la media aritmética de las notas obtenidas por Esteban se calcula como:
[tex]media=\frac{3+4+7+3+5+5+6+3+4}{9}[/tex]
Resolviendo:
media= 4,44
La media aritmética de las notas de Esteban si se cambia un 6 por un 7 es 4,44. Por lo que la media aritmética (promedio) cambia.
ModaPor otro lado, la moda de un conjunto de números es el número que aparece más a menudo dentro del grupo de datos.
En este caso, podes observar que la cantidad de veces que aparece cada número es:
3: 3 veces
4: 2 veces
5: 2 veces
6: 2 veces
Debido a que el 3 es el número con mayor cantidad de repeticiones, la nota que más se repite es 3.
Si de las notas de Esteban se cambia un 6 por un 7, se obtiene la serie de notas:
3, 4, 7, 3, 5, 5, 6, 3, 4
a cantidad de veces que aparece cada número es:
3: 3 veces
4: 2 veces
5: 2 veces
6: 1 vez
7: 1 vez
Debido a que el 3 es el número con mayor cantidad de repeticiones, la nota que más se repite es 3.
Entonces, podes observar que la moda es 3 y no varia si de las notas se cambia un 6 por un 7.
MedianaPor último, la mediana es valor que se encuentra en la mitad justa entre los valores máximo y mínimo de los datos con los que se está trabajando; es decir, que al ordenar los número de menor a mayor, éste se encuentra justamente en medio de los valores.
En este caso, ordenando de menor a mayor las notas de Esteban:
3,3,3,4,4,5,5,6,6
Se observa que el valor intermedio, es decir la mediana, de todas las notas de Esteban es 4.
Si de las notas de Esteban se cambia un 6 por un 7, se obtiene la serie de notas:
3, 4, 7, 3, 5, 5, 6, 3, 4
En este caso, ordenando de menor a mayor las notas de Esteban:
3,3,3,4,4,5,5,6,7
Se observa que el valor intermedio, es decir la mediana, de todas las notas de Esteban es 4. Por lo que la mediana no varia si de las notas se cambia un 6 por un 7.
En resumenEn resumen, la media aritmética es la única medida de tendencia central que cambia.
Aprende más con estos ejemplos:
brainly.com/question/24086990?referrer=searchResults brainly.com/question/15969676?referrer=searchResults brainly.com/question/17010976?referrer=searchResultsWhich describes the difference between the two sequences?
First Sequence: One-fourth, one-half, 1, 2, ellipsis
Second Sequence: One-half, 2, 8, 32, ellipsis
The first sequence is geometric because there is a common ratio of 2
The second sequence is geometric because there is a common ratio of 4.
The first sequence is geometric because there is a common ratio of 4
The second sequence is geometric because there is a common ratio of 2.
The first sequence is arithmetic because there is a common ratio of 2
The second sequence is arithmetic because there is a common ratio of 4.
The first sequence is geometric because there is a common difference of 2
The second sequence is geometric because there is a common difference of 4.
Answer:
The first option
Step-by-step explanation:
Got it right :)
How do you graph y=-10x+200 ?
Answer:
your slope is -10, and the y-intercept is 200
Step-by-step explanation:
Start at (0,200), or just 200 on the y axis. your slope is -10, or -10/200 in rise over run form. you want to go to the right one, and down 10. So make a dot at (0,200), then (1,190), then (2,180) and so on. to go in the negatives it is the opposite. left one, then up 10, so (-1, 210), then (-2,220) and so on.
A student used the slope-intersept form to write the equation of a line that has a slope of -2 and passes through the point (-3/10, 5). The students work is shown on the left. One of the pickures has the answers.
Answer:
D. Step 6: student needed to add the b value
Explanation:
All the steps are correct and they get the b value of 4.4. Since it's positive, it should be added in the orignal equation. So, it should look like y = -2x + 4.4 instead of y = -2x - 4.4
Precalculus to wa
Please help Ik the language
Answer:
In mathematics education, precalculus or College algebra is a course, or a set of courses, that includes algebra and trigonometry at a level which is designed to prepare students for the study of calculus. Schools often distinguish between algebra and trigonometry as two separate parts of the coursework.
Step-by-step explanation:
Dude you can search this stuff up
The sum of Jason’s 5 quiz scores is 95. What is the
average of Jason’s quiz scores?
A.95
B.45
C.20
D.19
E.11
Answer:
A
Step-by-step explanation:
SIR HOPE THIS HELP :) MAY I GET BRAINLIST PLEASE
Using the average formular, the average value of Jason's quiz score will be 19
Using average formula:
(Sum of scores ÷ frequency)Given the Parameters :
Sum of scores = 95 Frequency = 5Hence,
Average = 95 / 5 = 19Hence, the average score is 19.
Learn more : https://brainly.com/question/25568773
Someone pls help me! I’m so confused!
9514 1404 393
Answer:
(5, -1)(3, 1)(0, 4)Step-by-step explanation:
Apparently, you are supposed to assume that ...
y = g(x)
y = 4 - x
For the one given value of x, the corresponding y value is ...
y = 4 - 3 = 1
So, for that x-value, the table entry is (x, y) = (3, 1).
__
To find the missing x-values, you can solve the equation for x.
y = 4 - x
x + y = 4 . . . . add x
x = 4 - y . . . . subtract y
Now, for the given y-values, we can find the corresponding x:
x = 4 -(-1) = 5 ⇒ (x, y) = (5, -1)
x = 4 -(4) = 0 ⇒ (x, y) = (0, 4)
So, your table will be ...
I need help on these three PLEASE!!
Answer:
Hi... You should do like this
What is the solution to the inequality?
12 < 8 + x
A. x>4
B. x > 20
C. x < 4
D. x< 20
3t – 2(t – 1) ≥ 5t – 4(2 + t) please help ill give the crown thingy to the first person who gives me an answer
Answer:
Infinite many solutions
Meaning there is more than one solution
Hope this helps!
Let me know if this is right.
Step-by-step explanation:
Remove the parentheses
3t-2t+2 > 5t-8+4t
t+2 > t-8
Cancel equal terms
2 > -8
The statement is true
PLEASE NOTE:That sign you are putting under this > I didn't put it so just remember to put it.
Find the geometric mean of
4/5 and 180.
Answer:
12
Step-by-step explanation:
multiply 4/5 and 180 then take the square root
sqrt(4/5*180) = sqrt(144) = 12
What’s the answer to this pls? Thanks!
Answer: SAS
Step-by-step explanation:
It is given that AC is congruent to CE - Sides are equal
Angle ACB is congruent to angle DCE because they are vertical angles, and vertical angles are congruent - Angles are equal
It is given that BC is congruent to CD - Sides are equal
solve the equation tan(x+pi/3)=square root3/3 over the interval [0,2pi]
a. pi/6 only
b. 11pi/6 only
c. pi/6 and 7pi/6
d. 5pi/6 and 11pi/6
Answer:
Answer D 5pi over 6 and 11pi over 6
Step-by-step explanation:
Got it wrong lol
What unit is used to measure angles?
Answer:
Degrees.
The symbol looks like this.
°
answer this please.
Answer:
2. absolute value of p - q
Explanation:
Because when you calculate distance, you always use absolute value.
Can I get a thx and brainliest?
Solve for x: 2x/5 = 12/8
Halp ASAP.Thxxxx!
Answer:
x= 15/4
Step-by-step explanation:
cross multiply then divide both sides by 16
Answer:
x=15/4
Step-by-step explanation:
A line to purchase concert tickets is moving at a rate of 5 feet every 20 minutes. At this rate, how long will a group of friends have been in line if they moved 30 feet?
Answer:
1 hour
Step-by-step explanation:
Answer:
120 minutes or 2 hours
Step-by-step explanation:
Find the unit rate. Round to the nearest hundredth, if necessary.
$180 for 16 ft2
Answer: 11.20
Step-by-step explanation: i'm not good at rounding
solve for x and show work
-2(8x - 1) = 4(3x + 4)
Answer:
x = -1/2
Step-by-step explanation:
-2(8x - 1) = 4(3x + 4)
Simplify
-16x + 2 = 12x + 16
Subtract 12x from both sides
-28x + 2 = 16
subtract 2 from both sides
-28x = 14
divide both sides with -28
x = -14/28
simplify
x = -1/2
Answer:
x = -1/2
Step-by-step explanation:
-2(8x - 1) = 4(3x + 4)
-16x + 2 = 4(3x + 4)
Can anyone help with these questions?I really don’t understand them
Answer:
it is 7 i think
Step-by-step explanation:
What is the lateral surface area of the rectangular prism.
a 520
b 856
c 576
d 616
Answer:
c is the correct anser your welcome.
i dont need the work, just the answers
Answer:
64°
Step-by-step explanation:
There are vertically opposite angles and thus are equal.
There are 4 roses for every 7 carnations in a bouquet. Mr. Rodriguez buys a bouquet with 12 roses in it. How many carnations are in a bouquet Mr. Rodriguez bought?
The students in Roberto's school are painting a mural that will be 15 feet by 8 feet. First they make a scale drawing of the mural with a scale of 2 feet : 5 feet. Question 1 Part A Write an equation for the proportional relationship between the drawing's lengths x in feet and the actual mural's lengths y in feet.
Answer:
x = 2 * (y/5) feets
Step-by-step explanation:
Given that :
Actual dimension of mural = 15 feet by 8 feet
Scale drawing = 2 feet : 5 feet
2 feets on the scale drawing represents 5 feets of the actual drawing.
Drawing length (x)
Actual mural length (y)
x = 2 * (y/5) feets
Hence, dimension of scale drawing:
x = 2 * (15/5) ; x = 2 * (8/5)
x = 6 feets ; 3.2 feets
Terrance and Teresa both work for a book store. Terrance earns $450 per week. Teresa earns $300 per week plus a 6% commission on the total sales of books she sells. In one week, if Teresa sells $2000 worth of books, who will make more money and by how much?
Answer:
Terrence will make 30 more dollars than Teresa :-)
Step-by-step explanation:
gl! <33
A circular rug has a diameter of 3 feet. Part A What is the area in square feet, of the rug rounded to the nearest whole number? Enter your answer in the space provided
Answer:
7.069 ft²
Step-by-step explanation:
Given that:
Shape of rug = circular
Diameter of rug = 3 feets
The Area in square feet of the rug =?
Area of a circle :
πr²
r = Radius
r = diameter / 2 = 3 /2 = 1.5 feets
Area = π * 1.5^2
Area = 7.0685834
Area = 7.069 ft²
d + 3567 = 0
what does “d” equal?
Answer:
d= -3567
Step-by-step explanation:
d+3567=0
subtract 3567 from both sides
d= -3567
Answer:
d=−3567
Step-by-step explanation:
Add the inverse to it to get 0
Solve this diamond problem to be awarded as brainliest
You are 3 years less than twice the age of your sister. Let s be the age (in years) of your sister. Write an expression for your age in terms of your sister.
Answer:
2x-3=y
Step-by-step explanation:
let age of sister be x
my age be y
therefore 2x-3=y
1. The table and graph below show the amount of money Mi-Ling and Daniel
save each week. Who saves more each week? Explain. (Examples 1, 2, and 4)
Mi-Ling's Savings
Time (weeks)
Savings ($)
Daniel's Savings
50
ty
40
30
20
10
2
$30
Savings ($)
3
$45
4
$60
0 1 2 3 4 5
Number of Weeks
Answer:
Mi-Ling saves more money.
Step-by-step explanation:
At 3 weeks Mi-Ling has saved $45, whereas Daniel at 3 weeks has only saved $30