Linda randomly surveyed 20 teachers at her school about whether they prefer chalkboards or dry erase boards. She repeated the survey three times with three different sets of teachers.

A 3-column table with 3 rows. Column 1 has entries Sample 1, Sample 2, Sample 3. Column 2 is labeled Chalk with entries 12, 9, 1. Column 3 is labeled Dry Erase with entries 8, 11, 19.

Which pair of Linda’s samples seems to have the lowest variability and, therefore, are representative samples?


samples 1 and 2
samples 1 and 3
samples 2 and 3
none of the samples

Answers

Answer 1

Answer:

sample 1 and 2

Step-by-step explanation:

i got it right in edgeunity

Answer 2

Answer:

1 and 2

Step-by-step explanation:


Related Questions

write y=-2x^2-20x-52 in vertex form then find the axis of symmetry. show your work!

Answers

Answer:

Simplifying

y = 2x2 + 20x + 52

Reorder the terms:

y = 52 + 20x + 2x2

Solving

y = 52 + 20x + 2x2

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Simplifying

y = 52 + 20x + 2x2

Hope it helps =D

It will be Y=50+20x+2x2

Help WILL GIVE BRAINLIEST

Answers

Answer: oooo i know this one its 4 hopefully i helped

Step-by-step explanation:

I believe it’s 4 (20 letterssssssssss)

(6x - 3) - (4x -5)
need help

Answers

Answer:

2x+2

Step-by-step explanation:

6x - 4x = 2x

-3 -(-5) = 2

-3 +5 = 2

PLZ MARK BRAINLIEST! :)

Answer:

2x+2

Step-by-step explanation:

combine like terms

I can't figure this out!

Answers

The line is 180 degrees in total so your equation would be-
X-6 + 8x + 24 = 180
9x + 18 = 180
9x = 162
Answer is: x = 18
The correct answer is X=18

Help meeee!



Write your own real-world scenario where the Pythagorean Theorem can be applied to find a missing piece. You may choose to write a problem that is two- or three-dimensional in nature. Be sure that you will be able to draw a diagram of your scenario.

Write out your problem and submit it for Part 1. Be sure to end your scenario with a question.

Answers

Answer:

Supposed that you needed to know the diagonal distance from opposite corners of a rectangular prism.

d^2=x^2+y^2+z^2  where x, y, and z are the dimensions of the prism, or rectangular "box"

If the box has a width of 10, depth of 20, and a height of 30 then you have:

d^2=100+400+900

d^2=1400

d^2=100*14

d=√(100*14)

d=10√14 units

d≈37.42 units  (to nearest hundredth of a unit)

You might need this information to determine the most amount of space necessary to allow this box to pass through in any orientation...as the diagonal is the maximum dimension of the box.

I did a three-dimensional problem as the Pythagorean Theorem is often used only for two-dimensional problems in early mathematics.

Basic geometry episode 5
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( • . •)
/>❤

Answers

Answer:

A

Step-by-step explanation:

Answer:

D.

Step-by-step explanation:

square root of n^2, if n 0

Answers

The answer will be 0 because zero cannot be divided by itself or any number
The answer is 0. Since 0 divided by or multiplied by anything just equals 0.

PLZ HELP :(

find the length of of a 100-yard football field in meters. Use 1 yard = 3 feet
and 1 meters ≈ 3.28 feet round to the nerest tenth.

(≈ means about)

Answers

Answer: 91.46m

Step-by-step explanation: The length of 100 yard football field in meters. From the dimension given, 1 yard = 3 feet Therefore, 100 yard = x feet 1 yard = 3 feet 100 yard = x feet X = (100 × 3) / 1 X = 300 feet. But, 1 meter = 3.28feet X meter = 300 feet X = (300 × 1)  3.28X  = 91.46m Therefore, 100 yard football field is equal to 91.46m

answer: The football field would be 91.46 meters.

Please help!
The illustration below shows the graph of y as a function of x.
Complete the following sentences based on the graph of the function.
- As x increases, y _______ (increases/decreases).
- The rate of change for y as a function of x is not __________ (constant/constant), therefore the function is ________ (linear/nonlinear).
- For all values of x, the function value y ___ (≤/≥/=) 0.
- The y-intercept of the graph is the function value y = ____.
- When x = 1, the function value y = ___.

Answers

Answer: As "x" increases "y" *decreases*

y as a function of x is not *constant*

Therefore the function is *nonlinear*

For all values of x, the function value y *≥* 0.

The y intercept of the graph is *8*

x=1 function value of y is *5*

The given function is an exponential function and its qualities are explained below.

What is a logarithmic function?

The opposite of an exponential function is a logarithmic function. A log function and an exponential function both use the same base. An exponent is a logarithm. f(x) = bx is how the exponential function is expressed. The formula for the logarithmic function is f(x) = log base b of x.

As we can observe in the graph.

The illustration below shows the graph of y as a function of x.

Complete the following sentences based on the graph of the function.

- As x increases, y decreases.

- The rate of change for y as a function of x is not constant, therefore the function is nonlinear.

- For all values of x, the function value y > 0.

- The y-intercept of the graph is the function value y = 8.

- When x = 1, the function value y = 5.

Learn more about logarithmic functions here:

https://brainly.com/question/3181916

#SPJ2

Jack is running on a treadmill at a speed of 7.2 miles per hour. Assume y = total distance and x = number of hours. Please help quickly!!!

Answers

Answer:

Running pace per mile is 8:20

Treadmill running pace per mile calculated with percent incline is 6:56

Step-by-step explanation:

Running pace per mile is 8.20

Pls help it is due today

Answers

It’s the 4th bubble that is so ez lol

please help me on this i will give you brainliest

Answers

Answer:

option c. 21+3=y+11

............

Answer:
C!!!! 21+3=y+11

Dilation with a scale of 0.75.

Answers

Answer:

0.75 into a fraction is 3/4 3/4 is rise/run

Step-by-step explanation:for each coordinate go Up 3 times and right 4 times so your new coordinates should be (-1,7), (-1,6), (5,3), (5,4), and (6,4).  Can I have brainliest

0.75 in a fraction is 3/4 rise sun

what is the lest comen demomator of 1/8 1/12 and 7/18
A. 216
B. 108
C. 72
D. 48
plz hury i am on a test

Answers

Answer:

72

Step-by-step explanation:

18*4

12*6

8*9

Answer: LCD = 72

Step-by-step explanation:

Rewriting input as fractions if necessary:

1/8, 1/12, 7/18

For the denominators (8, 12, 18) the least common multiple (LCM) is 72.

LCM(8, 12, 18)

Therefore, the least common denominator (LCD) is 72.

Calculations to rewrite the original inputs as equivalent fractions with the LCD:

1/8 = 1/8 × 9/9 = 9/72

1/12 = 1/12 × 6/6 = 6/72

7/18 = 7/18 × 4/4 = 28/72

help meh plzzz buddy UwU

Answers

Answer:

10. 16 cubic cm

11. 5 and 1/3 cubic cm

Step-by-step explanation:

4 · 4 · 2 = 32

32 times 1/2 = 16

2 · 2 · 4 = 16

16 times 1/3

Answer:

10: The volume is 2[tex]cm^{3}[/tex]

11: The volume is [tex]\frac{8}{27}[/tex][tex]cm^{3}[/tex]

Step-by-step explanation:

Question 10: ([tex]\frac{1}{2}[/tex] * 4)([tex]\frac{1}{2}[/tex] * 2)([tex]\frac{1}{2}[/tex] * 2) = 2 * 1 * 1 = 2[tex]cm^{3}[/tex]

Question 11: ([tex]\frac{1}{3}[/tex] * 4)([tex]\frac{1}{3}[/tex] * 2)([tex]\frac{1}{3}[/tex] * 1) = [tex]\frac{4}{3}[/tex] * [tex]\frac{2}{3}[/tex] * [tex]\frac{1}{3}[/tex] = [tex]\frac{8}{27}[/tex][tex]cm^{3}[/tex]

8 dived 300 times 46

Answers

Answer:

1.22

Step-by-step explanation:

HELPPPPPPPPPPPPPPPPPPPP PLEASEEEEEEEEEEEEEEEEEE



(on both of them please))))

Answers

The first one is a triangle because: The two smaller sides of a triangle must add up to be larger than the longest side.
14 + 12 = 26 > 19

Answer:

14.4 inches

Step-by-step explanation:

Using the Pythagorean Theorem ([tex]a^2+b^2=c^2\\[/tex])

[tex]12^2+8^2=c^2\\144+64=c^2\\208=c^2\\c=\sqrt{208} = 14.4[/tex]

Hope this helps you out!

This is for Area, this would be appreciated.

Answers

The area for the triangle is 4.

Determine the commission using your equation
How much commission will the salesperson earn for selling a $25,000 car?

Answers

Answer:

It would be doubled so 50,000

Step-by-step explanation:

50,000 should be the answer

Martina is currently 12 years older than her cousin Joey. In 4 years she will be 3 times as old as Joey. Use this information to answer the following questions.


Step 1 out of 6:
Analyze Information
The goal is to find Martina's age and Joey's age.
Formulate a Plan
Use an equation to find Martina's age and Joey's age.
Solve
Write the equation 3(x + 4) = x + _____, where x is Joey's age.

Answers

Joey is 2 years old now and Martina is 16 years old now.

Explanation:

You are comparing the ages of two people and at two different periods of time - the present and in 5 years time.

Let the present age of the younger cousin (Joey) be

x

years.

Martina is 14 years older now. Her age is

(

x

+

14

)

years

In 5 years time , they will both be 5 years older than they are now:

Joey will be

x

+

5

  and  

Martina will be

(

x

+

14

)

+

5

=

x

+

19

Joey's age, times 3, will be equal to Martina's age....

3

×

(

x

+

5

)

=

x

+

19

   

solve the equation

3

x

+

15

=

x

+

19

2

x

=

19

15

2

x

=

4

x

=

2

     

Joey is 2 years old now

Check: Joey is 2 and Martina is 2+14 = 16

In 5 years time: Joey will be 7 and Martina will be 21.

3

×

7

=

21

Irene is 13 and
3
4
years old. Sheila is 1 and
1
2
years older than Irene, and Jane is 1 and
1
5
years older than Sheila. How old is Jane?

Answers

Answer: 12 years older

Step-by-step explanation:

please please help me

Answers

36 and 18 is the answer.
Let the balls be x

3x:4x:5x
If 4x=12 (green balls)
x=3

Now, Red balls = 3x3
= 9
Blue = 5x3
=15

Total=12+9+15
=36

2) total = 72 balls

Ratio=3x:4x:5x

3x+4x+5x=72
x=6

Red balls = 3x6
= 18

The property of taxes on a home varies directly with the value of the home. Jack currently lives in a home worth $172,000 and pays $13,760 on taxes.

Identify the constant.

Answers

Answer:

172,000

Step-by-step explanation:

it was kinda obvious

In a race, 41 out of the 50 bicyclists finished in less than 38 minutes. What percent of bicyclists finished the race in less than 38 minutes? Write an equivalent fraction to find the percent. ​

Answers

for left put 2 on each
On the box over 100 put 82, and put 82 in the box on the right
to find the percent, you will double everything because you only have 50 as the base and doubled its 100. 41 times 2 it’s equal to 82 so 82% of the bicyclists finished in less than 38 minutes. As a fraction it would be 41 over 50.

A school with 1,273 students has many after-school activities. One of these activities is gymnastics. If 47 students participate in the gymnastics program, what percent of the student population participates in gymnastics? Round your answer to the nearest tenth of a percent.

A.2.7 percent
B.4.2 percent
C.4.4 percent
D.3.7 percent

Answers

Answer:

D   3.7%

Step-by-step explanation:

Fill in the model to represent the percent.
20 ​%

Answers

Answer:

D

Explanation: The graph is split into 5 and therefore is split into 20 percent by piece

i think D, hope this helps!

Please help me! The questions are below! Thanks.

Answers

It’s d I’m pretty sure

Answer:

I think it would be B

Step-by-step explanation:

because it has to be exact and the height can be the same so it has to be 1.4 more so yeah

PLZ HELP!!!! what is the difference between 14 and $9.10

Answers

Answer:

Step-by-step explanation:

one is a whole number and the other mean the amount of money you have.

Answer:

$14.00 - $9.10 = $6.90

Step-by-step explanation:

I NEED HELLPP PLEASE

Answers

The answer would be A, vertex is 0.1

What is the equivalent ratio of 30

Answers

just 30 ? it needs to be a ratio and just 30 is not. like 30:60 would be 1:2
Answer: 1:2
Explanation:
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