Decide if each sample is random. Explain why or why not.
a. Asking every 15th person on the school roster if they buy lunch in the cafeteria or bring lunch from
home.
b. Measuring the height of all the sunflowers to find the mean height of all the flowers in a garden.​

Answers

Answer 1

Answer:

a- no they are polling

b-yes there is no point

Step-by-step explanation:


Related Questions

You have inherited land that was purchased for $30,000 in 1960. The value of the land increased by approximately 5% per year. What is the approximate value of the land in the year 2011?​

Answers

Answer:

  $361,223

Step-by-step explanation:

Each year, the value is multiplied by 1+5% = 1.05. After 51 years, it has been multiplied by that factor 51 times, so is now ...

  $30,000×1.05^51 ≈ $361,223

Final answer:

To find the approximate value of land purchased for $30,000 in 1960 with a 5% annual increase by 2011, we use the compound interest formula which results in an approximate value of $447,187.25.

Explanation:

To determine the approximate value of land in the year 2011, which was purchased for $30,000 in 1960 with an average annual increase of 5%, we will use the formula for compound interest. This situation can be treated as a compound interest problem where the initial principal is the initial land value, the rate is the annual increase, and the time is the number of years the land has appreciated.

The compound interest formula is [tex]A = P(1 + r/n)^(nt),[/tex] where A is the future value of the investment/loan, including interest, P is the principal investment amount (initial value of land), r is the annual interest rate (annual increase in value), n is the number of times that interest is compounded per year, and t is the time the money is invested or borrowed for, in years.

In this scenario, P is $30,000, r is 0.05 (5% expressed as a decimal), n is 1 since we are compounding annually, and t is 51 (2011 - 1960).

Therefore,

[tex]A = 30,000(1 + 0.05/1)^(1*51).[/tex]

Carrying out the calculation gives us the approximate value of the land in 2011.

[tex]A = 30,000(1.05)^51[/tex]
Approximate value of the land in 2011 = $447,187.25

How tall would the building be if it had 15 floors?

Answers

Answer:

it depends on how big the floors are.

Step-by-step explanation:

WILL GIVE BRAINLIEST The total cost f(x), in dollars, for renting a bowling lane for x hours is shown:
f(x) = 2x + 12
What does f(14) represent?
The number of dollars it costs to rent the bowling lane for 14 hours
The number of games you can bowl for a cost of $14
The number of games you can bowl in 14 hours
The number of hours the bowling lane can be rented for a cost of $14

Answers

Answer:

A

Step-by-step explanation:

it is the cost  in dollars to rent the bowling lane for 14 hrs.

The function f(14) represents that the number of dollars it costs to rent the bowling lane for 14 hours and this can be determined by using the given data.

Given :

The total cost f(x), in dollars, for renting a bowling lane for x hours is shown:  f(x) = 2x + 12.

The following steps can be used in order to determine the correct statement:

Step 1 - The arithmetic operations can be used in order to determine the value of f(14).

Step 2 - Write the given function.

f(x) = 2x + 12

Step 3 - Substitute the value of 'x' in the above function.

f(14) = 2(14) + 12

f(14) = 40

Therefore, the correct option is A) The number of dollars it costs to rent the bowling lane for 14 hours.

For more information, refer to the link given below:

https://brainly.com/question/5245372

1. Solve the inequality for x
Show each step of the solution
16x > 2x - 3

Answers

Answer:

x > -3/14

Step-by-step explanation:

Step 1:  Subtract 2x from both sides

16x - 2x > 2x - 3 - 2x

14x > -3

Step 2:  Divide both sides by 14

14x / 14 > -3 / 14

x > -3/14

Answer:  x > -3/14

please help me again

Answers

Answer:

AC=96 units

Step-by-step explanation:

x^2 - 16 = 6x

x^2 - 6x - 16 = 0

(x - 8)(x + 2) = 0

x - 8 + 8 = 0 + 8

x = 8 WORKS

x + 2 - 2 = 0 - 2

x = -2 CANT WORK BECAUSE IS NEG

CE = 6(8)

48

AC = AE + CE

AC = 48 + 48

AC = 96

Answer:  AC = 96


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Karen buys a water heater during the sale.
If Karen pays $350 , what was the original price?​

Answers

Answer:

350 *100 /50 = 700

Step-by-step explanation:

Basically 350 is 50 percent of the total. What u need to do is find the 100 percent. Just use this formula

Discounted price *100 / (what was the discount percentage when it was bought)

Answer:

original price is $525

Step-by-step explanation:

Find the distance between (1,0) and (9, 15).
Distance =

Answers

Answer:

d = 17

Step-by-step explanation:

d = √ (9 − 1) 2 + (15− 0)^2

d = √ (8) ^2 + (15) ^2

d = √ 64 + 225

d = √289

d = 17

Answer:

17

Step-by-step explanation:

i got it right on a quiz

claire spends 1/2 of her monthly salary on food, 1/4 on rent and 1/3 on power bills, she saves rest. what fraction of her monthly salary does she have?

Answers

Claire spends 1/2+1/4+1/3 on necessities, so we find a common denominator:

1/2=6/12

1/4=3/12

1/3=4/12

Then we add of these fractions together:
6/12+3/12+4/12=13/12

It looks like Claire is over-budget with her purchases.

(I’m not really sure if that is the problem)

Maybe it’s 1/2+1/8+1/24=12/24+3/24+1/24=16/24

This simplifies to 2/3 (dividing by 8).

So if Claire spends 1/2 on food, 1/4 of what’s left on rent, and 1/3 of that on power bills, then she will have 1/3 (1-2/3) left of her monthly salary.

I resaltó hope this helps!

A washer and dryer cost a total of $954. The cost of the washer is two times the cost of the dryer. Find the cost of each item.

Cost of washer : $ ____

Cost of dryer : $ ____

Answers

Answer:

The dryer would cost 318 and the washer would cost 636

Step-by-step explanation:

954 divided by 3 = 318  318x2=636     318+638=954

What is 5x+y=9 in slope-intercept form?

Answers

Answer:

y = -5x + 9

Step-by-step explanation:

Hello!

Here is a chart on the slope intercept.

Hope This Helps!

on a map, 1 inch equals 5 miles. Two cities are 5 inches apart on the map. What is the actual distance between the cites?

Answers

Answer:

25 in

Step-by-step explanation:

Answer:

25 miles

Step-by-step explanation:

If 1 inch equals 5 miles, which I wrote like 1in/5mi = 5in/x.

To find our answer we just multiply 5 miles by 5 inches to get 25 miles.

Select all the statements that correctly describe the solutions to this system of equations?
2x-y= 0
x+y=9

Answers

x + y = 9

x = 9 - y

2x - y = 0

2(9 - y) - y = 0

18 - 2y - y = 0

-3y = -18

y = 6

x = 9 - y

x = 9 - 6

x = 3

The value of x and y are 3 and 3 respectively in the given system of equations.

A system of equations is a set of two or further equations that own an identical set of unknowns. The thing of solving a system of equations is to determine the values for the unknowns that quench all of the equations in the system.

It is given that the system of equations is,

2x - y = 0

x + y = 9

Now, from the first equation, we get

y = 2x

On putting the above value of y in the second equation, we get

x + 2x = 9,

3x = 9,

x = [tex]\frac{9}{3}[/tex]

x = 3.

Now putting this value of x in the first equation, we get

2 [tex]\times[/tex] 3 + y = 9

6 + y = 9

y = 9 - 6

y = 3.

So, x = 3 and y = 3 in the above system of equations.

Learn more about the system of equations here:

https://brainly.com/question/21620502

#SPJ6

Can someone please help me? Pics included!!!

Answers

Answer:

I think the answer would be C.

Step-by-step explanation:

Square OSER, ER equals (2a+b) what is the area of square OSER

Answers

Answer:

4a² + 4ab + b² units²

Step-by-step explanation:

Area of a square = Length²

ER is a length of the square

ER = (2a + b)

Area of a square = (2a + b)² = (2a + b)(2a + b) = (2a)(2a) + (2a)(b) + (2a)(b) + (b)(b) = 4a² + 4ab + b²

The area of the square OSER = [tex]4a^{2}+4ab+b^{2}[/tex] sq unit

Step-by-step explanation:

Given,

Length of each side(ER) = (2a+b) unit

To find the area of the square OSER.

Formula

The area of a square with each side a unit is [tex]a^{2}[/tex] sq unit

[tex](a+b)^{2}= a^{2} +b^{2} +2ab[/tex]

Now,

The area of the square OSER = [tex](2a+b)^{2}[/tex] sq unit

= [tex]4a^{2}+4ab+b^{2}[/tex] sq unit [ by using the formula of ([tex]a+b)^{2}[/tex]]

Giselle is building a small baseball infield for her brother. The infield should be in the shape of a square. Each side of the infield,
between bases, measures 30 feet. The distance between home plate and second base, as shown in the picture, is 45 feet.
Which best describes the shape of the baseball field?

Answers

Answer:

Step-by-step explanation:

B

for a square diagonal is found by using pythagoras theorem.

(30)²+30²=900+900=1800≠45²

The best describes the shape of the baseball field would be; B Not square (30)² + 30² ≠45².

What is Pythagoras' Theorem?

If ABC is a triangle with AC as the hypotenuse and angle B with 90 degrees then we have:

|AC|^2 = |AB|^2 + |BC|^2    

where |AB| = length of line segment AB. (AB and BC are rest of the two sides of that triangle ABC, AC being the hypotenuse).

Giselle is building a small baseball infield for her brother.

The infield should be in the shape of a square.

Each side of the infield, between bases, measures 30 feet.

The distance between home plate and second base, as shown in the picture, is 45 feet.

A square diagonal can be calculated by using the Pythagoras theorem.

|AC|^2 = |AB|^2 + |BC|^2    

= (30)² + 30²

= 900 + 900

= 1800

≠45²

Learn more about Pythagoras' theorem here:

https://brainly.com/question/12105522

#SPJ5

(I NEED THIS ANSWERED QUICKLY! I WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWER!)

The coordinates of the vertices of quadrilateral ABCD are (7, -7), (4, -10), (1.5, -2.5), and (6, -3), respectively.

If quadrilateral ABCD is rotated 180° counterclockwise about the origin, what are the coordinates of D’?

A. (6, 3)
B. (3, -6)
C. (-6, 3)
D. (-3, 6)

Answers

C. Coordinates of D' (-6,3)

Step-by-step explanation:

When any figure is rotated 180° in the counterclockwise direction, then the coordinates of the vertices is changed into its opposite sign.

(x, y) → (-x, -y)

The coordinates of the vertices of quadrilateral ABCD is changed when it is rotated 180 degrees counterclockwise about the origin as,

A (7,-7) → A'(-7,7)

B (4,-10) → B' (-4,10)

C (1.5, -2.5) → C' (-1.5, 2.5)

D (6, -3) → D'(-6,3)

So the coordinates of D' will be (-6,3)

A cone has a radius of 7 in and a volume of 512.87 in3.what is the height?

Answers

Height of the cone is 9.99 in

Step-by-step explanation:

Step 1: Volume of a cone = 1/3 πr²h. Given volume of the cone = 512.87 in³ and r = 7 in.  Find height, h.

512.87 = 1/3 × 22/7 × 7² × h

512.87 × 3 = 22 × 7 × h

1538.61 = 154h

∴ h = 1538.61/154 = 9.99 in

Lee got 77,67,99,79,100,65,79,89,58 and 67 on his English tests

What is the mean of Lee’s English tests

Answers

Answer:78

Step-by-step explanation:

77+67+99+79+100+65+79+89+58+67 = 780

Divide this number by the toal number of factor,which here is 10:

780/10 = 78

A community garden center hosts a plant giveaway every spring to help community members start their gardens. Last year, the giveaway
supported 50 families by giving away 150 plants. Based on this ratio, how
many plants will the center give away this year in order to support 65 families?

Answers

the ratio last year was (families:plants) 1:3 so multiply each by 65 because 65 families to get 65:195 so 195 plants

Answer:

195?

Step-by-step explanation:

How many cubed pieces of fudge that are 3 inches on an edge can be packed
into a Christmas tin that is 9 inches deep by 12 inches wide by 9 inches high with
the lid still being able to be closed?

1. 18
2. 24
3. 32
4. 36
5. 43

Answers

Answer:

36 cubed pieces of fudge

Step-by-step explanation:

9 x 12 = 108

108 ÷ 3 = 36

5. Stan has a good driver discount on his automobile insurance policy. He pays 86% of the regular
premium rate of $279. The actual premium Stan pays is
O a. $86.00
O b. $193.00
O c. $239.94
O d. $279.00
OOOO

Answers

The answer is c

You just multiply 279 by 0.89.

Hope this helps!
The answer is 239 dollars

Difference between an integer and a real number

Answers

Answer:

Real number is any number. This includes integers, rational, and irrational numbers.

While integers are just positive or negative whole numbers that also includes 0.

Hope this helps!

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Stephanie put $80 in her bank account when she was five years old. The bank gave her a simple interest rate of 2.1%.

Does she have enough money to buy a TV for $1,000 after leaving her money in the bank for 10 years?

Answers

Answer:

2000

Step-by-step explanation:

what is the distance between ( 1,0) and ( 9,15)​

Answers

Answer:

(8,15)

Step-by-step explanation:

17 is the answer hehe :)

Please help I don't understand this problem. I need to get this done by tonight.

Answers

Answer:

Step-by-step explanation:

24

(4k^2*2k*k^3)^3 simplify

Answers

Answer:

hope this helps you mate (♥ω♥*)(づ ̄ ³ ̄)づ(づ ̄ ³ ̄)づ(づ ̄ ³ ̄)づ(づ ̄ ³ ̄)づ(。’▽’。)♡(。’▽’。)♡(´ε` )♡(´ε` )♡(。’▽’。)♡(。’▽’。)♡(´ε` )♡(。’▽’。)♡

-(v + 7) -3 = -26 + v

Answers

Answer:

v = 8

Step-by-step explanation:

-v -7-3 = -26+v

2v = -10+26

2v = 16

v = 8

(100 POINTS) Can anyone solve this math equation for me? Thank you!

Answers

Answer:

Step-by-step explanation:

Given that,

x^8/x^a=x²

Applying indices

Division rule a^m ÷ a^n = a^(m-n)

Then,

x^8/x^a=x²

x^(8-a)=x²

For this to be equal means that, the power are equals since they have the same base

Then, 8-a=2

8+2=a

So, a=10

Taking the second equation

(x^6)^b=x¹²

Using indices again

x^(6b)=x¹²

Also, for this to be equal

6b=12

Then, b=12/6

b=2

Then, b=2 and =10

We need to find b-a.

b-a=2-10=-8

Then, the answer to b-a is -8

What is the midpoint of EC?

Answers

Answer:

The correct answer is first option

(t + p, r)

Step-by-step explanation:

Points to remember

midpoint formula

Length of a line segment with endpoints (x1, y1) and (x2, y2) is given by,

Midpoint= [(x2 + x1)/2 , (y2 + y1)/2]

To find the midpoint of EC

Let   (x1, y1) = E(2t, 0) and  (x2, y2) = C(2p, 2r)

Midpoint = [(2t + 2p)/2 , (0 + 2r)/2]

= (2(t + p)/2 , 2r/2)

= (t + p, r)

Therefore midpoint of EC = (t + p, r)

The correct answer is first option

The rectangle shown has a perimeter of 60 inches and a width of 12 inches. What is its length?

A.) 12 Inches
B.) 18 Inches
C.) 36 Inches
D.)48 Inches​

Answers

Answer:

it is 18

Step-by-step explanation:

that the ansewer if you divid

Final answer:

The length of the rectangle with a perimeter of 60 inches and a width of 12 inches is 18 inches, calculated using the perimeter formula for rectangles and solving for the length.

Explanation:

The question asks us to find the length of a rectangle given its perimeter and width. To solve this, we use the formula for the perimeter of a rectangle, which is P = 2l + 2w, where P is the perimeter, l is the length, and w is the width. In this case, we have P = 60 inches and w = 12 inches.

So, substituting the given values into the formula, we get:

60 = 2l + 2(12)

First, calculate the double of the width:

2(12) = 24 inches

Now, subtract this value from the total perimeter to find the double of the length:

60 - 24 = 36 inches

Finally, divide by 2 to find the length of the rectangle:

36 / 2 = 18 inches

Therefore, option B, 18 inches, is the correct answer for the length of the rectangle.

Other Questions
Some large hardware stores, such as Home Depot, boast of carrying as many as 20,000 different products in each store. This volume of goods is the result of a. The purchasing agents of Home Depot who have determined what goods producers have available. the purchasing agents of Home Depot who have b. Determined what goods consumers want. the choice of consumers regarding what to purchase to satisfy their wants and the choice of producers regarding c. What to produce to maximize profits. the choice of consumers regarding what to purchase to satisfy their wants and the choice of producers regarding what d. To produce to satisfy their wants. Dr. Jennings is doing a study on the experience of being a racial minority on a college campus. He goes to the Asian Student Association, Black Student Union, and Hispanic Student Group on his campus to recruit participants for his study. Dr. Jennings only includes Asians, African Americans, and Hispanic participants in his study. Which type of sampling is Dr. Jennings using?a. quota samplingb. cluster samplingc. systematic samplingd. purposive sampling What is the value of x? An excerpt from the Fourth Amendment reads: "The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized." Suspecting a Mr. Flammer of running an illegal gambling and loan sharking operation, the FBI obtained a federal search warrant. The FBI entered the residence of Mr. Flammer and searched through various records. Suspecting most of the records were contained on a personal computer, the FBI began attempting to access the computers various files. Unable to access the needed files because of password barriers, the FBI installed a system known as a key logger system (KLS). This system was able to determine the keystrokes made on a computer and thus allowed the FBI to discover the password needed to enter the incriminating files. The discovery led to the gathering of evidence linking Mr. Flammer to the suspected illegal operation Question: Were Mr. Flammers Fourth Amendment rights violated? 2. what value of b makes the following equation true 3. which statement is true about the value of A population of black bears depends on salmon from a stream for food. If a drought causes the stream to run dry one year, how will this likely impact the black bear population? A. The population's size will increase. B. The population will thrive on new species of fish. C. The population will be unaffected. D. The population's size will decrease. How many liters are in 8 quarts? Bad things that happened during the Japanese Tokugawa Era despite industries flourishing? How much work is required to turn an electric dipole 180 in a uniform electric field of magnitude E = 46.0 N/C if the dipole moment has a magnitude of p = 3.02 1025 Cm and the initial angle is 64? Which of the following directors staged A Midsummer Night's Dream with trapezes in 1970 and founded the Centre for International Theatre Research in Paris in 1971?a. Peter Brookb. Herbert Beerbohm Treec. Anne Bogartd. George C. Wolfe The hire a countrys economic development the? During Project 3: Week 1 the goal was to synthesize an artificial kidney stone. If you were producing barium phosphate tribasic, what would be the correct stoichiometric coefficients for the reaction depicted below? Ba(NO3)2 (aq) + Na3PO4 (aq) Ba3(PO4)2 (s) + NaNO3 (aq) the law of conservation of mass states that in achemical reaction,matter is not cratered or destroyed. is it True or False When you hit a .27 kg volleyball the contact time is 50 ms and the average force is 125 N. If you serve the volleyball (from rest) sending it up at 30 degrees above the horizontal, what is theA) vertical component of the momentum of the volleyball in kgm/s?B) horizontal component of the momentum of the volleyball in kgm/s? The current spot exchange rate is $1.55 = 1.00 and the three-month forward rate is $1.60 = 1.00. consider a three-month american call option on 62,500. for this option to be considered at-the-money, the strike price must be Two different wave groups with the same height travel together in the same direction. The wavelength of one group is twice as long as the wavelength of the other group. A combined wave of extra height will be produced _______. PLEASE HELP QUICK!!!!! WORTH 50 POINTS!!!!!!! Explain how to solve the equation. StartFraction c over 6 EndFraction = 9 A loading car is at rest on a track forming an angle of 25 with the vertical when a force is applied to the cable attached at C. The gross weight of the car and its load is 5500 lb, and it acts at point G. Knowing the tension in the cable connected at C is 5000 lb, determine (a) the acceleration of the car, (b) the distance the car moves in 20 s, (c) the time it takes for the car to return to its original position if the cable breaks after 20 s. Hope is desperate for the new designer purse that she saw while window shopping at her local mall. She knew every girl in school would covet her bag and wish to be like her. When she walked in, she whipped out her credit card, and purchased the $5,000 bag. This kind of purchasing is called: Conspicuous consumption Which words from the excerpt describe Morriss feelings about the absence of things? Steam Workshop Downloader