Answer:
a.27
Step-by-step explanation:
ayudenmee plis
El sueldo de los trabajadores de una multinacional sigue una distribución normal con media µ=$2000 y una desviación estándar σ=$600. Si se tomó una muestra de 64 trabajadores, calcular el intervalo de confianza para estimar el sueldo medio poblacional de los trabajadores, con un nivel de confianza del 99%.
Answer:
El intervalo, con un nivel de confianza de 99%, para estimar el sueldo medio poblacional de los trabajadores es de ($1807, $2193).
Step-by-step explanation:
El primero paso es el encuentro de lo [tex]\alpha[/tex], que es la subtracion de 1 por lo nivel de confianza e divididos por 2. Entonces:
[tex]\alpha = \frac{1 - 0.99}{2} = 0.005[/tex]
Ahora, buscamos a z en la tabela Z de manera que z tienga uno p-value de [tex]1 - \alpha[/tex].
Entonces, z con uno p-value de [tex]1 - 0.005 = 0.995[/tex], o sea, z = 2.575.
La margen de error es:
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
En que [tex]\sigma[/tex] es la desviación estándar y n es el tamaño de la muestra.
σ=$600. Si se tomó una muestra de 64 trabajadores
Entonces [tex]\sigma = 600, n = 64[/tex]
Margen de error:
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
[tex]M = 2.575\frac{600}{\sqrt{64}}[/tex]
[tex]M = 193[/tex]
El limite inferior es la subtración de la media de la muestra por la margen de error. Entonces 2000 - 193 = $1807.
El limite inferior es la suma de la media de la muestra con la margen de error. Entonces 2000 + 193 = $2193.
El intervalo, con un nivel de confianza de 99%, para estimar el sueldo medio poblacional de los trabajadores es de ($1807, $2193).
7 has been subtracted from the product of x and 7=
Answer:
7x - 7
Step-by-step explanation:
Product of x and 7 = 7x
7 minus 7x
7x - 7
Hence the expression is :
7x - 7
Question # 3: Two-sixths of the kids attending a tennis camp are left-
handed. There were 48 total kids attending the camp. How many kids are
left handed?
Answer:
52
Step-by-step explanation:
34-56/93
390 + 86(90x89)
DONT LISTEN TO THIS
HELPPPPPPP ME PLSSSSSSS
Answer:
answer to your question is 200.96cm^2 but you can round off and write 201cm^2
Step-by-step explanation:
area of circle =pie*(radius)^2
=3.14*(8)^2
=3.14*64
=200.96^2
=201cm^2
Hope it helps u!!
You want to wrap a gift shaped like the regular triangle prism, how many square inches of wrapping paper do you need to completely cover the prism
Answer: 8.7 in
Step-by-step explanation:
Answer:
8.7inches
Step-by-step explanation:
Find the circumference of each circle. Round to the nearest tenth. Use 3.14 or 22/7
A. 1,078
B. 164
C. 154
d. 77
Answer:
Circumference of given circle = 154 cm² (Approx.)
Step-by-step explanation:
In given diagram:
Diameter of given radius = 49 cm
Value of π = 3.14
Find:
Circumference of given circle
Computation:
Radius of given circle = Diameter of given radius / 2
Radius of given circle = 49 / 2
Circumference of given circle = 2πr
Circumference of given circle = 2(3.14)(49/2)
Circumference of given circle = (6.28)(49/2)
Circumference of given circle = 153.86
Circumference of given circle = 154 cm² (Approx.)
Solve x^2-26=0
Answer: x=+-____
Answer:
x = ± √26
Solution
Step-by-step explanation:
Here is the Answer to your question.
Mr.Martinez asked his students to write a situation that could describe the relationship between all the values of x and y in the table.Whoch situation best describes the relationship between all the values of x and y in the table?
X goes left and right. Y goes up and down. Hope this help:)
Which of the following represents the ratio of the corresponding sides of ABC to DEF?
PLEASE HELP ME ASP !! ..
Answer:
Your answer is correct; 2:1
Step-by-step explanation:
1
A train trip took 4 hours. For the trip, the train traveled at 60 kilometers per hour. For the
2
rest of the trip, the train traveled at 100 kilometers per hour. How far did the train travel
in all?
Answer:
320 kilometers
Step-by-step explanation:
1/2 -- (60 * 2) = 120 km
rest pf the trip -- 100 km per hour -- 2 hours left -- (100 * 2) = 200 km
Therefore, 120 + 200 = 320 km
Thenks and mark me brainliest :)
1. Students were split in 2 groups for an activity. There are 16 students in group A and
15 students in group B. If 25% of group A and 20% of group B consisted of girls, identify
the group which has a lesser number of girls.
and I
Answer:
Group B
Step-by-step explanation:
sin W= 0.23
Please help!!!!
Answer:
[tex]W = 13.29^\circ[/tex]
Step-by-step explanation:
Given
[tex]\sin(W) = 0.23[/tex]
Required
Find W
Take arc sin of both sides
[tex]W = \sin^{-1}(0.23)[/tex]
Using a calculator
[tex]W = 13.29^\circ[/tex]
Circle O and circle P are congruent. What can you conclude from the diagram?
Answer:
We can only infer that OA=OB=PD=DE.
Step-by-step explanation:
Since, if two circles are congruent then their radius must be equal.
And, here A and B are the points in the circumference of circle O therefore, the distance of these points from the center O of the circle is the radius of the circle.
So, OA=OB. ( if we join the points O and C then OA=OB=OC)
Similarly, In Circle P, PE= PD. ( if we join the points P and CF then PD=PE=PF).
------------------------------------------------------
Credits to: parmesanchilliwack
The high school is 3.6 inches from the middle school on a map. Each half inch on the map represents 0.4 mile. What is the actual distance between the two schools?
2.88 miles
4.5 miles
7.2 miles
9 miles
Answer:
2.88 miles
Step-by-step explanation:
because 3.6/.5 = 7.2
then 7.2 × .4 = 2.88
Let A be the set of all lines in the plane. Define a relation R on A as follows. For every l1 and l2 in A, l1 R l2 ⇔ l1 is parallel to l2. (Assume that a line is parallel to itself). Which of the following is true for R?
A. R is reflexive.
B. R is symmetric.
C. R is transitive.
D. R is neither reflexive, symmetric, nor transitive.
Answer:
Hence, the relation R is a reflexive, symmetric and transitive relation.
Given :
A be the set of all lines in the plane and R is a relation on set A.
[tex]R=\{l_1,l_2\in A|l_1 \;\text{is parallel to}\; l_2\}[/tex]
To find :
Which type of relation R on set A.
Explanation :
A relation R on a set A is called reflexive relation if every [tex]a\in A[/tex] then [tex](a,a)\in R[/tex].
So, the relation R is a reflexive relation because a line always parallels to itself.
A relation R on a set A is called Symmetric relation if [tex](a,b)\in R[/tex] then [tex](b,a)\in R[/tex] for all [tex]a,b\in A[/tex].
So, the relation R is a symmetric relation because if a line [tex]l_1[/tex] is parallel to the line [tex]l_2[/tex] the always the line [tex]l_2[/tex] is parallel to the line [tex]l_1[/tex].
A relation R on a set A is called transitive relation if [tex](a,b)\in R[/tex] and [tex](b,c)\in R[/tex] then [tex](a,c)\in R[/tex] for all [tex]a,b,c\in A[/tex].
So, the relation R is a transitive relation because if a line [tex]l_1[/tex] s parallel to the line [tex]l_2[/tex] and the line [tex]l_2[/tex] is parallel to the line [tex]l_3[/tex] then the always line [tex]l_1[/tex] is parallel to the line [tex]l_3[/tex].
Therefore the relation R is a reflexive, symmetric and transitive relation.
Based on the pattern shown, what is 46?
41 = 4
42 = 16
43 - 64
Answer: 44 equals 128
Step-by-step explanation: This is because you do 16 times 4 to get 64, then you double that to 8, so you do 16 times 8 and get your answer 128
HOPE IM RIGHT!
I WILL GIVE BRAINLY!! HELP!! ASAP!! Links WILL be reported... thank you.
Answer:
my answer would be c. y=lX+7l
6×3a
please help me
Answer:
18a
Step-by-step explanation:
Amanda was 48 inches tall. She grew n inches last year and is now 56.5 inches. Which expression represents the number of inches Amanda grew?
56.5 + n = 48
48 + n = 56.5
48 - n = 56.5
48n = 56.5
Answer:
It should be 48+n=56.5
Step-by-step explanation:
Answer: Choice B
48 + n = 56.5
============================================================
Work Shown:
48 = height last year, in inches
n = number of inches she grew last year
48+n = current height right now, in inches
48+n = 56.5 since her current height is 56.5 inches
Side notes:
48 inches = 4 feet56.5 inches = 4.71 feet (approximate) = 4 ft, 8.5 inches (exact)To convert from inches to feet, you divide by 12. The equation in bold solves to n = 8.5, meaning she grew 8.5 inches over the last year.Which of the following is not a combination?
Answer:
answer b is correct answer
HELP PLEASE !!! IXL GEOMETRY
Answer:
WZ = 8.9
Area = 426 cm²
Step-by-step explanation:
sin 25° = x/21
0.4226 x 21 = x
x = 8.87
area = 8.87 x 48 = 426 cm²
You and 3 friends are going to the County Fair.
You have a coupon that will save your group
$20. If the total bill to get into the fair was
$100, how much does one regular price ticket
to the fair cost?
Answer:
$120
Step-by-step explanation:
Since after $20 coupon, the price become $100, then before it was
(20 + 100) = $120
Thenks and mark me brainliest :)
Answer:
One regular price ticket cost $40
Step-by-step explanation:
First yo would have to add back the $20 that they saved to the total which would be $120 total and then since that was the total for all 3 of them you would do $120 divided by 3 which would be $40 for each ticket regularly.
2+2 brain time yessir
Answer:
Step-by-step explanation:
4 is the correct answer
Find the value of k, such that x² - 4x2 + kx + 4 will leave a remainder of 4 when divided by (x - 1).
A -3
B 8.4
C 0,3
D -4
Can someone help me with this one ASAP
Answer:
k=4
Explanation:f(x)=x3+4x2−kx+1By the remainder theorem, the remainder when dividing a polynomial f(x)by (x−a)
is f(a)In our case, we have a=−1 and we need:0=f(−1)=(−1)3+4(−1)2−k(−1)+10=f(−1)=−1+4+k+10=f(−1)=k+4
Hence k=−4
might have gotten it wrong sorry if so.
18
61°
Find missing side round to nearest tenth
Answer:
x = 9.9 or 10
Step-by-step explanation:
to find missing angle -->
90 + 61 + z = 180
151 + z = 180 *subtract 151 from both sides*
z = 29
to find x -->
tan (29) = x/18 *put tan(29) over 1 then cross multiply*
x = 18 (tan(29))
x = 9.97 --> round up to 10
You want to open a checking account at your local bank which offers two options. A standard checking account charges $6 each month plus $.25 for each check written. A select checking account charges $4.50 each month plus $.50 for each check written. Which system of equations can be used to determine the number x of checks that must be written in a month in order for the total charges y for the two checking accounts to be the same?
Answer:
The total charges for the two checking accounts will be the same after 6 checks written.
Step-by-step explanation:
Since I want to open a checking account at my local bank which offers two options, a standard checking account that charges $ 6 each month plus $ 0.25 for each check written, and a select checking account that charges $ 4.50 each month plus $ 0.50 for each check written, to determine which system of equations can be used to determine the number X of checks that must be written in a month in order for the total charges Y for the two checking accounts to be the same, the following calculation must be performed:
6 + 0.25X = Y
4.5 + 0.5X = Y
6 + 0.25x5 = Y
4.5 + 0.5x5 = Y
6 + 1.25 = Y = 7.25
4.5 + 2.50 = 7
6 + 0.25x6 = Y
4.5 + 0.5x6 = Y
6 + 1.50 = Y = 7.50
4.5 + 3 = 7.50
Therefore, the total charges for the two checking accounts will be the same after 6 checks written.
3. Penny's family decided to go to the Splash Park.
They purchased two adult tickets and two child
tickets. The adult tickets were 1į times the price
of the child tickets and the total cost for all four
tickets was $85. What was the cost of each type
of ticket?
Answer:
21.25
Step-by-step explanation:
because 85$ divided by the 4 tickets is 21.25
Please help will give brainliest
The point C (-3,-1) is rotated 180 clockwise around the origin.
What are the coordinates of the resulting point, C'?
Answer: [tex](3,1)[/tex]
Step-by-step explanation:
Given
The point C [tex](-3,-1)[/tex] is rotated [tex]180^{\circ}[/tex] clockwise about the origin
If a point is rotated [tex]180^{\circ}[/tex] about the origin, then the sign of the co-ordinates changes without changing the order of coordinates.
So,C [tex](-3,-1)[/tex] becomes C' [tex](3,1)[/tex] after the rotation.
Which prism has a greater volume?
O Prism Ahas 17 more cubic units volume than prism B.
O Prism A has 7 more cubic units of volume than prism B.
O Prism B has 3 more cubic units of volume than prism A.
O Prism B has 8 more cubic units of volume than prism A.
Answer:
It may be A. or C.
Step-by-step explanation:
A. 5 = 20 4 = 16 4 = 16 20 + 16 = 36 + 16 = 52
B. 3 = 12 3 = 12 7 = 27 + 12 = 39 + 12 = 51
i uhhh don't know this is confusing
im very sorry if im incorrect
Answer:
not c
sorry its not exact
I need help on this
Answer:50
Step-by-step explanation: