Answer:
Classification of groups as the population or the sample:
Population:
the 2386 business owners whose names were obtained
Sample:
the 800 business owners who were randomly chosen
Step-by-step explanation:
The population in research is the comprehensive group with common characteristics, which the researcher is interested in studying. The sample is a subset or a representative of the common group, which the researcher selects to study. The sample is, therefore, a part of the population.
Rectangle LMNO is reflected over the x-axis to create rectangle L'M'N'O'. If a line segment is drawn from point M to point M', which statement would best describe the relationship between segment M M prime and the x-axis? They are diameters of concentric circles. They share the same midpoints. They are perpendicular to each other. They share the same endpoints.
Answer:I am pretty sure the answer is
C. "They are perpendicular to each other."
Step-by-step explanation:
For a shape to be reflected, it must be reflected across a line.
The true statement about the relationship between segments M, M' and the x-axis is that (c) they are perpendicular to each other
Given that:
Shape: rectangle LMNOReflection line: x-axisWhen the shape is reflected across the x-axis, we have the following perpendicular and congruent lines
L x-axis and L' x-axis M x-axis and M' x-axis N x-axis and N' x-axis O x-axis and O' x-axisHence, the relationship between segments M, M' and the x-axis is that (c) they are perpendicular to each other
Read more about reflection at:
https://brainly.com/question/18549175
The Student Council sold the following items at the home football game. A B с D E F G H
Item Price Income Cost Per Expenses Profit Number Sold Item 2 lollipops 85 $21.25 $0.12 $10.20 $11.05 $8.16 3 Gummies 48 $16.80 $0.18 $0.25 $0.35 $0.45 $0.55 4 Bubble Gum 79 $35.55 $8.64 $17.38 $11.96 $0.22 $0.26 $18.17 5 Combos 46 $25.30 $13.34 $50.72 6 TOTAL: $50.72
i stands for income and e stands for expenses, what is the formula for p, profits?
A: p = i/e
B: p = e/i
C: p = e-i
D: p = i-e
Answer:
[tex]p = i - e[/tex]
Step-by-step explanation:
Given
[tex]i = income[/tex]
[tex]e = expenses[/tex]
Required
Determine the profit (p)
Profit (p) is the difference between income (i) and expenses (e)
.
Mathematically:
[tex]Profit = Income - Expenses[/tex]
i.e.
[tex]p = i -e[/tex]
Option D is correct.
Answer:
d
Step-by-step explanation:
Guys please help me its really important i only have a bit of time
Answer:
B
A
Step-by-step explanation:
Use the graph to find the amplitude and period.
Notice amplitude is the absolute value of the number in front of either sin or cos
please give a heart for thanks :)
Find the measure of angle A.
Answer:
I had this question and i got it right it is the measure is four
Step-by-step explanation:
QUICK PLS HELP
The mean number of typhoon hitting US follows a Poisson distribution with
variance 0.5 per month. Find the probability that
(a) 4 typhoons will hit US in a year.
(b) at least 2 typhoons will hit US in a given half-year.
Answer:
A) 0.1339
B) 0.8078
Step-by-step explanation:
The Poisson Distribution formula is given by;
P(x; μ) = (e^(-μ) × (μ^(x))/x!
We are given;
Variance = 0.5 per month
Now, in Poisson distribution, variance = mean.. Thus, mean μ = 0.5 per month
A) We want to find the probability that 4 typhoons will hit US in a year.
Thus, x = 4
But since it's for a year, then μ = 0.5 × 12 = 6
So;
P(x = 4) = (e^(-6) × (6^(4))/4!
P(x = 4) = 0.00247875 × 1296/24
P(X = 4) = 0.1339
B) probability that at least 2 typhoons will hit US in a given half-year is;
P(X ≥ 2) = 1 - P(X < 2)
P(X < 2) = P(X = 0) + P(X = 1)
In a half given year, μ = 0.5 × 6 = 3
P(X = 0) = (e^(-3) × (6^(0))/0!
P(X = 0) = 0.0498
P(X = 1) = (e^(-3) × (6^(1))/1!
P(X = 1) = 0.1494
P(X < 2) = 0.0498 + 0.1494
P(X < 2) = 0.1922
P(X ≥ 2) = 1 - 0.1922
P(X ≥ 2) = 0.8078
PLEASE TAKE A PIC OF YOU WORK ON A PECIE OF PAPER WITH THE AWNSER ON IT!!!! Hey! I need help with this! I’m bad at math and have a 55% in it rn it would mean a lot if you could take this seriously. Only 5 questions.
Answer:
Step-by-step explanation:
Hey if you give me your email i ca email you the aswer it wot let me link a photo lol
Complete the congruence statement by naming the corresponding angle or side.
50 points
Step-by-step explanation:
Triangles RQP and RBC are congruent.
Letters R and P are the 1st and 3rd letters in RQP.
Letters R and C are the 1st and 3rd letters in RBC.
Hence line RP = line RC = line CR (D).
D) CR
ΔRQP ≅ ΔRBC
They are congruent so if you highlight the line PR and find the similar one,
ΔRQP ≅ ΔRBC
The line would be line CR.
This year Rachel watched 65 movies she thought that 26 of them were very good of the movies she watched what percentage did she think we’re very good
Answer:
40%
Step-by-step explanation:
26×100=2600÷65=40
40%×65=26
Reilly, Maria, and Tamara figured out that the ratio of the times they spent painting a deck is 3:5:1. They are going to use this ratio to share the $36.90 they earned. How much will Maria get?
WHAT IS 5/6 TIMES 15
Answer:
12.5
Step-by-step explanation:
it's the awnser. I need to explain why
evaluate this expression c^2 + d^3
Answer:
The expression is not factorable.
Step-by-step explanation:
Graph f(x) = 4[x] +5.
Answer:
See image for reference
Step-by-step explanation:
Answer:
Its b
Step-by-step explanation:
You run around the perimeter of a baseball field at a rate of at most 12 feet per second. Which of the following are possible amounts of time that it takes you to run around the baseball field?
Answer: 79 seconds.
Step-by-step explanation:1) we have to calculate the lenght of the baseball field.
perimeter of the baseball field=2(radius)+lenght of a semicircle.
2(radius)=2(175 ft)=350 ft
lenght of a semicircle=40% of a circumference=(40/100)(2πr)
Perimeter of the baseball field=2(175 ft) + (40/100)(2π175 ft)=
=350 ft + 140π ft=350 ft + 439.82 ft=789.82 ft,
2)Now, we calculate the amounts of time that it takes you to ruan arount the baseball field.
10 ft------------------------1 second
789,82 ft----------------- x
x=(789.82 ft * 1 second) / 10 ft=78.98 s≈79 s
4.
IF AABD
ACBE, find the value of x.
27 cm
12 cm
SE
E
23.4 cm
Answer:
[tex] x = 10.4 [/tex]
Step-by-step explanation:
Since ∆ABD is similar to ∆CBE, therefore, the ratio of their corresponding side lengths would be equal to each other. Thus:
[tex] \frac{BD}{BE} = \frac{AD}{CE} [/tex]
BD = 12 cm
BE = x
AD = 27 cm
CE = 23.4 cm
Plug in the values
[tex] \frac{12}{x} = \frac{27}{23.4} [/tex]
Cross multiply
[tex] x \times 27 = 23.4 \times 12 [/tex]
[tex] 27x = 280.8 [/tex]
Divide both sides by 27
[tex] x = 10.4 [/tex]
Joselyn saw an alligator that was 5 feet long. How many inches is 5 feet.
Answer:
The alligator is 60 Inches long.
Step-by-step explanation:
5 feet is 60 inches.
hope it helps!
Answer:
60 inches
Step-by-step explanation:
There are 12 inches in 1 foot, therefore the ratio of inches to feet is 12:1.
If the alligator is 5 feet than the amount of inches increase.
In order to find how long the alligator is in inches, multiply 5 by 12
5 x 12 = 60
Automobiles arrive at the drive-through window at a post office at the rate of 7 every 10 minutes. The average service time is 7 minutes. The Poisson distribution is appropriate for the arrival rate and service times are exponentially distributed. (Note: the given equations are NOT necessarily in the correct order.) What is the average time a car is in the system?Formulas for 13.17 What is the average number of cars in the system? What is the average time cars spend waiting to receive service? What is the average number of cars in line behind the customer receiving service? What is the probability that there are no cars at the window? What percentage of the time is the postal clerk busy? What is the probability that there are exactly two cars in the system?
Answer:
1) the average time a car is in the system is 0.1587 min
2) the average number of cars in the system 0.1111
3) the average time cars spend waiting to receive service is 0.01587 min
4) the average number of cars in line behind the customer receiving service is 0.01111
5) the probability that there are no cars at the window is 0.9
6) the percentage of time that the postal clerk is busy is 10%
7) the probability that there are exactly two cars in the system is 0.1217
Step-by-step explanation:
Given that;
Arrival rate λ = the rate of 7 every 10 minutes = 7/10 = 0.7
Average service time μ = 7 minutes
The Poisson distribution is appropriate for the arrival rate and service times are exponentially distributed.
1) What is the average time a car is in the system?
Average in the system W = 1 / (μ - λ)
= 1 / (7 - 0.7) = 1 / 6.3 = 0.1587 min
therefore the average time a car is in the system is 0.1587 min
2) What is the average number of cars in the system?
Average number of cars L = λ / (μ - λ)
= 0.7 / (7 - 0.7) = 0.7/6.3 = 0.1111
Therefore the average number of cars in the system 0.1111
3) What is the average time cars spend waiting to receive service?
Average time spend waiting for services Wq = λ / μ(μ - λ)
= 0.7 / 7(7 - 0.7) = 0.7/44.1 = 0.01587 min
Therefore the average time cars spend waiting to receive service is 0.01587 min
4) What is the average number of cars in line behind the customer receiving service?
average number of cars in line behind the customer receiving service
Lq = λ² / μ(μ - λ) = (0.7)² / 7(7 - 0.7) = 0.49 / 44.1 = 0.01111
Therefore the average number of cars in line behind the customer receiving service is 0.01111
5) What is the probability that there are no cars at the window?
probability that there are no cars at the window = 1 - (λ / μ)
= 1 - (0.7 / 7) = 1 - 0.1 = 0.9
Therefore the probability that there are no cars at the window is 0.9
6) What percentage of the time is the postal clerk busy?
percentage of the time is the postal clerk busy = (λ / μ)
= (0.7 / 7) = 0.1 ≈ 10%
Therefore the percentage of time that the postal clerk is busy is 10%
7) What is the probability that there are exactly two cars in the system?
the probability that there are exactly two cars in the system = (λ²e^-λ) / 2!
= (0.7²e^-0.7) / 2! = 0.2433 / 2 = 0.1217
Therefore the probability that there are exactly two cars in the system is 0.1217
Determine which of the four postulates, if any, can be used to prove that the triangles are congruent.
50 points
The red lines mean the sides with the lines are the same. The red arc means those angles are the same.
Using that information you know the angle where the two same sides connect would also be the same.
So you have one side (S) and 2 angles (A) that are identical.
You can use B. ASA
Answer:
I think it is B.
Step-by-step explanation:
Hope this helped have an amazing day!
Evaluate if a = 6, b = 2, c = 9, & d = 3
Answer:
12
Step-by-step explanation:
a2 b
( )2 ( )
(–2)2 (3)
(4)(3)
x/x+2 -4/x-2=1 solve the equation
i will mark the brainliest plz help
Answer: x = -2/3
[tex]\frac{x}{x+2}- \frac{4}{x-2}=1\\\\<=>\frac{x(x-2)}{(x+2)(x-2)}-\frac{4(x+2)}{(x+2)(x-2)}=1\\\\\\<=>\frac{x(x-2)-4(x+2)}{(x-2)(x+2)}=1\\\\\\=>x(x-2)-4(x+2)=(x-2)(x+2)\\\\\\<=> x^{2} -2x-4x-8=x^{2} -4\\\\\\<=>-6x-8=-4\\\\\\<=>-6x=8-4\\\\\\<=>-6x=4\\\\\\<=>x=-4/6=-2/3[/tex]
Step-by-step explanation:
Which of the following is equal to 16.4 ?
O A. 32
O B. V16.4
O c.
D. 64
Answer:
b?
Step-by-step explanation:
b= v16.4
The lines represented by the equations 2y + 5x = –2 and y
- x + 3 are
parallel
Submit Answer
neither parallel nor perpendicular
perpendicular
the same line
Answer:
you should use desmos graphing. When you get there in the top left corner there are 3 lines. press that and scroll down. when you see sarcastic linear regression press that and put the coordinates points I hope this helped :))
What could be the approximate value of the
correlation coefficient for the accompanying scatter
plor?
-X
1) -0.85
2) -0.16
3) 0.21
4) 0.90
Answer:
Step-by-step explanation:
Mr. Chen is buying cookies for the teachers and staff at Liberty Middle School. Each box contains 10 chocolate chip, 6 peanut butter, and 4 oatmeal raisin cookies. If there were 30 total peanut butter cookies, how many chocolate chip cookies did he buy? chocolate chip cookles
Answer:
50 chocolate chip cookies
Step-by-step explanation:
30÷6=5
the following formula gives the area of a circle, A, dependent on its radius, r.
A = πr²
solve the equation for the variable r.
Answer:
sqrt(A/pi), -sqrt(A/pi)
Step-by-step explanation:
A=pi*r^2
r^2=A/pi
r=sqrt(A/pi), -sqrt(A/pi)
The following list gives the number of siblings for each of 11 students. 0, 8, 9, 6, 5, 7, 2, 4, 3, 1, 11 Find the modes of this data set. If there is more than one mode, write them separated by commas. If there is no mode, click on "No mode."
Answer:
[tex]0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11[/tex]
Step-by-step explanation:
Given
[tex]0, 8, 9, 6, 5, 7, 2, 4, 3, 1, 11[/tex]
Required
Determine the mode
Though, not necessary; it is a good practice to order the given data either in ascending or descending order.
In ascending order, the ordered data are:
[tex]0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11[/tex]
Mode implies that: the data that has the highest number of occurrence.
In the given data, each data has a frequency of 1.
Hence, the mode is:
[tex]0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11[/tex]
A parallelogram is a:
rectangle
square
quadrilateral
rhombus
Answer:
quadrilateral
Step-by-step explanation:
A quadrilateral that has two pairs of parallel sides.
please help. as soon as possible would be great thank you
Correctly identify the slope and y -intercept of the
slope intercept form equation:
y= mx + b
slope
intercept
The expression -25t+1250 represents the volume of liquid of a container after t seconds. The expression 50t+250 represents the volume of liquid of another container after t seconds. What does the equation -25t+1250=50t+250 mean in this situation?
Answer:
t = 13.33 second
Step-by-step explanation:
Given:
Equation first -25t+1250
Equation second 50t+250
Computation:
-25t+1250=50t+250
75 t = 1,000
t = 13.33 second
Means in t (13.33) second both container have same amount of liquid
Need help with this ASAP it’s due in 10 minutes
Answer:
Step-by-step explanation:
Formula to be used,
A = [tex]P(1+\frac{r}{n})^{nt}[/tex]
Here, A = Final amount
P = Principal amount
r = rate of interest
n = Number of compounding (In a year)
t = Duration of investment (In years)
Question (5)
P = $4250
r = 0.015
n = 4
t = 3 years
A = [tex]4250(1+\frac{0.015}{4})^{4\times 3}[/tex]
A = [tex]4250(1.00375)^{12}[/tex]
A = $4445.24
Part (C)
1). P = $6000
r = 0.03
n = 2
t = 10 years
A = [tex]6000(1+\frac{0.03}{2})^{2\times 10}[/tex]
= [tex]6000(1.015)^{20}[/tex]
= $8081.13
2). P = $9000
r = 0.05
n = 2
t = 8 years
A = [tex]9000(1+\frac{0.05}{2})^{2\times 8}[/tex]
= [tex]9000(1.025)^{16}[/tex]
= $13360.55