Answer:
There are 15 quarters and 18 nickles
Step-by-step explanation:
The equations derived from this word problem are
5n + 25q = 465
and
3 + q = n
Fill (3 + q) into n in the first equation then solve. You get q = 15.
Then plug 15 into second equation (cause it's easier).
You get n = 18
Enter the equation of the line in slope-intercept form.
The line parallel to y = −x that passes through (7, 2.5).
The equation of the line that passes through (7, 2.5) is y = .
2. Enter the equation of the line in slope-intercept form.
The line parallel to y =
7
4
x + 4 that passes through (−8, 0).
The equation of the line that passes through (−8, 0) is y = .
Answer:
y = -x + 9.5
this is the answer to the line parallel to y=-x that passes through (7, 2.5)
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=searchResults8. How many 1/3 pound hamburger patties can be made out of 9 pounds
of ground beef?
Your answer
Answer:
27 or im dumb
Step-by-step explanation:
Answer:
27
Step-by-step explanation:
each pound can make 3 burgers, so 3 x 9 is 27
2. The angle measures of a triangle are shown in the diagram.
What is the value of X
Answer: The angles inside a triangle are called interior angles. ... The three interior angles in a triangle will always add up to 180°. At each corner the exterior and interior angles are on a straight line, so at each corner these two angles add up to 180°.
Step-by-step explanation:
Sal proves that the angles of an equilateral triangle are all congruent (and therefore they all measure 60°), and conversely, that triangles with all congruent angles are equilateral.
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
Which object is moving faster based in the graphs presented?
Answer:
A
Step-by-step explanation:
On the graph is shows a increase distance faster than B, when a is at 10 seconds its at 20 meters, and b is at 10 seconds its only at 10 meters, Its A is double the speed of B
you plan to open a lemonade stand near where you live. The cost to buy the wood is $60 and the cost to make the lemonade is $3 per cup. You plan to sell each cup pf lemonade for $5. Let x be the number of cups of lemonade sold. Write a function P(x) that represents the total profit you earned from selling x cups of lemonade
Answer:
P(x)=2x-60
Step-by-step explanation:
From the information provided, the function P(x) would indicate that the total profit you earned from selling x cups of lemonade is equal to the result of multiplying the price per cup for the number of cups minus the total cost. This cost is the result of adding up the cost of buying wood plus the cost per cup for the number of cups:
P(x)=5x-(60+3x)
P(x)=5x-60-3x
P(x)=2x-60
According to this, the function is: P(x)=2x-60.
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 ...
What percent represents the part of the model shaded yellow?
A)
33.3%
B)
35%
C)
40%
D)
42.5%
Answer:
a.)
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
There are five bars in total, and yellow takes up two bars.
Hence, the fraction is 2/5.
2/5 = 40%.
Hope this helped!
i dont need the work, just the answers
Answer:
64°
Step-by-step explanation:
There are vertically opposite angles and thus are equal.
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?
Which 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 :)
Is this true or false?
Answer:
False
Step-by-step explanation:
What is the solution to the inequality?
12 < 8 + x
A. x>4
B. x > 20
C. x < 4
D. x< 20
help me please???????
Answer:
Drag -1.6 in between -1.5 and -2 on the left/ negative side of the number line.
Hun Lee is skateboarding and using energy at a rate of 400 kilocalories per hour. At what rate is Hun Lee using energy in minutes per calorie?
Answer:6.66666 kilocalories per hour
Step-by-step explanation:
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
Two-thirds of the buses in the transit system run on natural gas, and the rest run on diesel. If 738 of the buses run on diesel, how many buses does the transit system have?
Answer:
2214 buses
Step-by-step explanation:
Answer:
there are 1479 bus running in diesel and there are 2214 buses
Solve this diamond problem to be awarded as brainliest
What unit is used to measure angles?
Answer:
Degrees.
The symbol looks like this.
°
How do you solve linear equations with substitutions?
Answer:
The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.
Step-by-step explanation:
Solve the following system by substitution.
2x – 3y = –2
4x + y = 24
The idea here is to solve one of the equations for one of the variables, and plug this into the other equation. It does not matter which equation or which variable you pick. There is no right or wrong choice; the answer will be the same, regardless. But — some choices may be better than others.
For instance, in this case, can you see that it would probably be simplest to solve the second equation for "y =", since there is already a y floating around loose in the middle there? I could solve the first equation for either variable, but I'd get fractions, and solving the second equation for x would also give me fractions. It wouldn't be "wrong" to make a different choice, but it would probably be more difficult. Being lazy, I'll solve the second equation for y:
4x + y = 24
y = –4x + 24
Now I'll plug this in ("substitute it") for "y" in the first equation, and solve for x:
2x – 3(–4x + 24) = –2
2x + 12x – 72 = –2
14x = 70
x = 5
Which of the following is the last step in problem solving? A. Understand the problem. B. Check your answers and present the solution. O C. Gather your resources. O D. Come to an answer.
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 someone help me with this?
Meal A has 170 calories in 3 servings. Meal B has 160 calories
in 4 servings. Which meal has more calories per serving?
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
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
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
In ΔNOP, p = 85 inches, ∠O=57° and ∠P=113°. Find the length of o, to the nearest 10th of an inch.
Answer:
77.4
Step-by-step explanation:
Answer:
1.2
Step-by-step explanation:
Delta math :)
Zoe owns a food truck that sells tacos and burritos. She only has enough supplies to
make 113 tacos or burritos. She sells each taco for $3 and each burrito for $6. Zoe
must sell at least $510 worth of tacos and burritos each day. If 53 tacos were sold,
determine all possible values for the number of burritos that Zoe must sell in order to
meet the requirements. Your answer should be a comma separated list of values. If
there are no possible solutions, submit an empty answer.
Answer:
58.5
Step-by-step explanation:
If you take 53 times 3 = 159
take 510 - 159 = 351
then take 351 divided by 6 = you get 58.5