Responder:
Teléfonos móviles :
Universo - -> {todos los teléfonos móviles} - unidad experimental
Población - -> {Samsung, tecno, LG, iPhone, Motorola, Huawei, .....} - -> valores variables de unidades experimentales
Muestra - - -> {Samsung, tecno, iPhone} - selección aleatoria de datos de población
Países europeos :
Universo - -> {todos europeos} - unidad experimental
Población - -> {Inglaterra, Noruega, Turquía, Italia, Francia, Holanda, .....} - -> valores variables de todos los países europeos
Muestra - - -> {España, Alemania, Polonia} - selección aleatoria a partir de datos de población
Explicación paso a paso:
Haciendo distinción entre universo, población y muestra. Univerae y la población se describen como sinónimos en algún texto. Sin embargo, otros textos estadísticos hicieron diferencias sutiles entre ambos; con el universo que se dice que contiene todas las unidades experimentales. ; siendo población el conjunto de valores de la variable. Sin embargo, podemos asumir de manera concluyente que ambos son sinónimos, ya que de ellos se extrae una muestra que es un subconjunto de un conjunto de datos más grande (población).
Which equation represents the total cost of a repair by an electrician after x hours?
An electrician charges $90 per hour plus a $50 travelling fee.
Answer:
y = 90x + 50
Step-by-step explanation:
In this situation, let's define the variable and the constant.
The variable is what changes, so in this case the wage ($90) changes with how many hours the electrician is hired for.
The constant is the number that stays the same, in this case it would be the $50 traveling fee because it remains the same every time.
The equation should be written in this form:
y = mx + b
m = slope (variable)
b = y-intercept (constant)
Therefore, you can write the equation like this:
y = 90x + 50
Hope this helps!!
- Kay :)
Calculate for Area. 5 cm
Answer: 25 cm
Step-by-step explanation:
solve the equation for x in simplest form
2 / 3x = 1/6
A x= 1/4
B x= 3/5
C x=1/2
D= x=4/5
Answer:
A x=1/4
Step-by-step explanation:
2/3x = 1/6
Divide by 2/3
so 1/6 ÷ 2/3
= 1/6 • 3/2
= 3/12
= 1/4
ANSWER ASAP GIVING BRAINLIEST FIVE STARS AND A HEART I ONLY NEED A FEW SENTENCES!
Please answer the following essay question:
An isosceles triangle has two congruent angles. Write an expression to represent the measure of the third angle of the triangle. Explain.
Answer:
third angle =180-two congruent angles. is expression.
Jonathan says that when you add 7 2 3 to 2 2 3 , you must add the whole numbers together first ( 7 + 2 = 9 ). Then you just add the numerators together ( 2 + 2 = 4 ), and you add the denominators together ( 3 + 3 = 6 ). So the answer is 9 4 6 . Unfortunately, Jonathan's strategy is incorrect. Solve this problem, and then briefly explain the flaw in Jonathan's reasoning.
Answer:
9 4/3
Step-by-step explanation:
Jonathan working:
Add 7 2/3 to 2 2/3
Step 1: you must add the whole numbers together first ( 7 + 2 = 9 ).
Step 2: Then you just add the numerators together ( 2 + 2 = 4 ),
Step 3: you add the denominators together ( 3 + 3 = 6 ).
Step 4: Answer is 9 4/6
Correct workings:
Add 7 2/3 to 2 2/3
Step 1: you must add the whole numbers together first ( 7 + 2 = 9 ).
Step 2: Then you just add the numerators together ( 2 + 2 = 4 ),
Step 3: you pick one of the denominators because they are the same (3)
Step 4: Answer is 9 4/3
Help me please!!!!!!
Answer:
(2,8)
Step-by-step explanation:
I'm not so sure but if I were answering I would have picked (2,8)
Please help:))))) AsAP
Answer:
10b-2b-8x+14
(the last one)
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
6x + 8b = x + 5x + 8b
Please help with this!?!?!?
Answer:
2$
Step-by-step explanation:
you can see that for every mile, the cost goes up 1.5 dollars, and if you tale the lowest amount, 2 miles, multiply by 1.5 = 3, and then subtract that from 5, you get 2
Plz answer
3x+5x=32.
Step-by-step explanation:
start by adding like terms which would gice us
3x+5x=8x so,
8x=32 divide by 8 on both sides so we leave x by itself giving us x=4
Which postulate or theorem proves that triangle JHG and
triangle EFG are congruent?
•HL Congruence Theorem
• ASA Congruence Postulate
•SAS Congruence Postulate
• AAS Congruence Theorem
Answer:
The answer is AS A Congruence Postulate.
Step-by-step explanation:
help please
4 − ( −12) + ( −7) =
............................................9
Write −(1/4⋅1/4⋅1/4⋅1/4) using exponents.
Answer:
-(1/4)^4
Step-by-step explanation:
Hope it helped!!!
solve for the missing side,x
Answer:
7.44
Step-by-step explanation:
With reference angle 28°
perpendicular (p) = x
base (b) = 14 cm
Now
Tan 28° = p / b
0.532 = x / 14
x = 7.44
Hope it will help :)
Answer:
Step-by-step explanation:
Hayden's checking account balance was $145.95. After two checks were cashed, each for the
same amount, his balance was - $4.05. This problem can be represented by the equation below.
145.95 - 2x = -4.05
What does x represent?
A. amount of each cashed check
B. total amount of both cashed checks
C. beginning checking account balance
D. final checking account balance
Answer: A. Amount of each cashed check.
Step-by-step explanation:
145.95 - 2x = -4.05
2x=150
X=75
Which of the followers scatter plots could have a trend line with an equation of 2x+5
Answer:
answer is c because of the y intercept . . so the y intercept is postive and goes through the orgin
Step-by-step explanation:
6(5 - q) ?
This is distributive property of multiplication.
Answer:
30-6q
Step-by-step explanation:
6*5-6*q
30-6q
eliminate the parameter in the equations x=5cos(t) -7 and y=5sin(t)+9. how can the rectangular equation be described?
circle
ellipse
parabola
hyperbola
Answer:
the answer is A
Step-by-step explanation:
The parameters represent a circle with a radius of 5 units, centered at (-7,9) and the equation of the circle is (x + 7)² + (y - 9)² = 5².
Deducing the figure from the parameters:The given equations are:
x = 5cos(t) - 7, and
y = 5sin(t) + 9
if we rearrange the above equations we get:
(x + 7) = 5cos(t), and
(y - 9) = 5sin(t)
Taking square of both equation we get:
(x + 7)² = 25cos²(t), and
(y - 9)² = 25sin²(t)
Now, adding the equations we get:
(x + 7)² + (y - 9)² = 25cos²(t) + 25sin²(t)
(x + 7)² + (y - 9)² = 25
(x + 7)² + (y - 9)² = 5²
This is an equation of a circle with a radius of 5 units and the center at (-7,9)
since, the equation of a circle with radius R units and centered at (a,b) is given by:
(x -a)² + (y - b)² = R²
Learn more about equation of a circle:
https://brainly.com/question/10618691?referrer=searchResults
Which of the following is the solution to the compound inequality below?
3x +5>_ -1 or - 2x - 7>_5
A. x>_2 or x >_-6
B. X>_-2 or X<_-6
c. x>_5/3 or x<_-7/2
D. x>_-5/3 or x>_7/2
Answer:
The answer of the question is b
The solution to 6x = 48 is x = ___.
A. 5
B. 6
C. 7
D. 8
Expand: f(x)= x^4- x^3+x^2+x-
Choose the correct description of the graph of the compound
inequality (1 point)
x -3 <-11 or x + 5 2 14,
• A number line with a closed circle on 8, shading to the left, and
an open circle on 9, shading to the right
A number line with an open circle on
8, a closed circle on 9, and
shading in between
O A number line with an open circle on -8, shading to the left, and
a closed circle on 9, shading to the right
A number line with a closed circle on -8, an open circle on 9, and
shading in between
Answer:
A number line with a closed circle on -8, an open circle on 9, and shading in between
Triangle ABCis rotated 90° clockwise around the origin to get
triangle A'B'C. Find the length of the line segment, AC
A. 2.23
OB. 4.47
O c. 2.44
D.2
Answer:
The distance A’C’ is 4.47 units
Step-by-step explanation:
Before we go on, we need to get the appropriate transformation
Mathematically, we have a 90 degrees clockwise rotation yielding the following;
(x,y) to (-y,x)
A is (-4,1)
C is (-2,5)
By transforming, we have
A’( -1,-4)
C’ (-5,-2)
To get the magnitude of the line segment, we are going to use the distance formula between points
We have this as;
D = √(x2-x1)^2 + (y2-y1)^2
D = √(-5-(-1))^2 + (-2-(-4))^2
D = √(-4)^2 + (2)^2
D = √(16 + 4)
D = √20
D = 4.47 units
WILL MARK AS BRAINLIEST Write a complete Spanish sentence to indicate what the following people
eat/drink each day. Make sure to capitalize the first word of the sentence, end
with a period and include the correct article (el, la, los, las)! If there is more
than one of an item, you need to make that food/beverage plural. Follow the
model.
Answer:
can we see the model
Step-by-step explanation:
Help plssssssssssssss?
Answer:
2
Step-by-step explanation:
because when x, the input, is -3, the y, the output, is 3
Every year Ethan ears 38,428. Every year he spends 21,728 on expenses. How much money should Ethan have leftover?
Answer:
16,700
Step-by-step explanation:
38,428
_
21,728
=
16,700
If g(x) = 2x – 9, determine g(4) – g(1)
Step-by-step explanation:
g(x) = 2x - 9
g(4) = 2* 4 - 9
= 8 - 9
= - 1
g(1) = 2 * 1 - 9
= 2 - 9
= - 7
Now
g(4) - g(1)
= - 1 - ( -7)
= - 1 + 7
= 6
Hope it will help :)
what is the equation?
Answer:
y=22x
Step-by-step explanation:
If x=1 and y=22 then y=22x
merhaba adim omer takip edermisiniz
Answer:
evet ama takip etmekle ne demek istiyorsun? ve ben Kaiden!
Step-by-step explanation:
PLEASE HELP ONLY IF YOUR FOR SURE!! <3 What is the value of x in the figure?
Enter your answer in the box.
x =
Answer:
68. We just subtract 22 from 90
What is this answer
Answer:
t = ≥ 0.1
Step-by-step explanation:
Hope that helps!
