A class of fourth graders decides to split into groups based on the first letter of their last names.then,they choose students from each group.what type of sampling is used?

A.Quota sampling

B.Volunteer sampling

C.Purposive sampling

D.Convenience sampling

Answers

Answer 1

Answer:

Volunteers sampling is correct answer


Related Questions

Evaluate 2^5/2^2 i need some help lol

Answers

2^5/2^2 = 2^(5-2)
= 2^3
= 8

A movie theater has been charging $10.00 per person and selling about 500 tickets on a typical weeknight. After surveying their customers, the theater management estimates that for every 50 cents that they lower the price, the number of moviegoers will increase by 50 per night. Find the demand function. (Let x represent the number of tickets sold and p represent the price.)

Answers

Answer:

[tex]p(x) = -0.01x + 15[/tex]

Step-by-step explanation:

Given

Let x represent the number of tickets, and p the charges

[tex](x_1,p_1) = (500,10)[/tex]

A reduction of 50c gives an increment of 50 tickets.

This gives:

[tex](x_2,p_2) = (500+50,10-0,5)[/tex] ---- [tex]50c = \$0.5[/tex]

[tex](x_2,p_2) = (550,9.5)[/tex]

Required

Determine the demand function

First, calculate the slope:

[tex]m = \frac{p_2 - p_1}{x_2 - x_1}[/tex]

[tex]m = \frac{9.5 - 10}{550-500}[/tex]

[tex]m = \frac{-0.5}{50}[/tex]

[tex]m = -0.01[/tex]

So, the equation is:

[tex]p = m(x - x_1) + y_1[/tex]

[tex]p = -0.01(x - 500) +10[/tex]

[tex]p = -0.01x + 5 +10[/tex]

[tex]p = -0.01x + 15[/tex]

Hence, the function is:

[tex]p(x) = -0.01x + 15[/tex]

8. A pyramid has a volume of 8 cubic feet. The height is 2 feet. The base is rectangular. Give possible dimensions for the length and width of the base.​

Answers

Answer:

base = 12 ft²

The base could be 3 ft x 4 ft, 6 ft x 2 ft, etc.    (any numbers multiplied together = 12)

Step-by-step explanation:

volume = 1/3bh

8 = 1/3b(2)

multiply both sides of the equation by 3:

24 = 2b

b = 12 ft²

PLease help good afternoon

Answers

Answer: 75

Step-by-step explanation:

[tex]\frac{a}{15}=\frac{5}{1}[/tex]

a*1= 15*5

a= 75

What is the minimum value of h(x)?
h(x) = (x - 5)^2 + 6

Answers

Answer:

see in pdf the solution is there.

Step-by-step explanation:

What is the answer to this question? Twice r is 20

Answers

Answer:

2r = 20

So, r = 10

Step-by-step explanation:

hiiiiiiiiiiiiii there

Answers

Answer:

D. 18.18

Step-by-step explanation:

Based on the information given we would set up the ratio

[tex] \frac{27.5}{25} = \frac{20}{x} [/tex]We then cross multiply to get 20x25=27.5x

multiply

500=27.5x

divide to solve for x

x=18.18

width = 18.18

Tell the slope and y-intercept of the graph.

Answers

To find the slope, you can use the formula: [tex]\frac{rise}{run}[/tex]. Start at where the graph intersects at the y-axis, which is -4. So, it rises up 2 units and goes left 3 units, which makes the slope [tex]\frac{2}{3}[/tex].

To find the y-intercept, you would start at where the graph intersects at the y-axis, which is -4 and this would be the y-intercept.

To find the equation, you can use the formula: y = mx + b. m is slope and b is the y-intercept. Plug the slope and y-intercept you found earlier. Thus, your final answer should be: [tex]y = \frac{2}{3}x-4[/tex]

Please reach out to me if you are still confused. Hope this helps :)

Pls help
Kari and Julie are practicing for basketball tryouts. Kari makes 3 less than twice as many baskets as Julie.
Part A
Write an expression with two terms for the number of baskets that Kari makes. Explain how you found your expression.

Answers

Answer:

Step-by-step explanation:

K=2J-3

Answer:

2x-3

Step-by-step explanation:

Twice as much as Julie: 2 x ? = 2x

3 less than: -3

If one pair of supplementary angles is a right angle, the other angle must also be a right angle true or false?

Answers

Answer: True

Step-by-step explanation:

A supplementary angle refers to the angles that has a sum of 180° when they're added together.

We should note that a right angle equals to 90°, therefore the other angle in the supplementary angle will be:

= 180° - 90°

= 90°

Since a right angle equals 90°, then the other angle must be a right angle.

Therefore, the answer is TRUE.

HELP!!! DUE IN 8 MINS!! ​

Answers

Answer:

Step-by-step B. is your answer

explanation:

factor the expression 6+27

Answers

Answer:

1, 2, 3, and 6 are factors of 6 while 1, 3, 9, and 27 are factors of 27.  Notice that the product of the outer elements equal what your factoring as well as the inners.

1x6=6, 2x3=6, 1x27=27, and 3x9=27.  Notice the GCF in this case is 3, so factor that out of your initial expression.

Therefore 3(2+9) = 6 +

Step-by-step explanation:

Help please! Thanks to anyone who answers. I’ll give brainiest!

Answers

Answer:

A

Step-by-step explanation:

Please help I will mark Brainlest

Answers

Answer:

Step-by-step explanation:

ES 100 CHAOOOOOOOOOOOOOOOOOOOOOOOO

answer : 75
good luck

Which answer best describes the shape of this distribution? skewed left skewed right uniform bell-shaped

Answers

Answer:

Skewed right

Step-by-step explanation:

Most of the data is to the right, so it's not skewed left.

Uniform is mostly even, so not that either.

Bell shape is centered and vaguely triangular, so incorrect, hence the only remaining option is skewed right.

Hope this helps :)

Stay Cold,

Brook

help meh please I'm super stuck

Answers

Answer:

1. B

2. = 4,8,12,16,20

Step-by-step explanation:

Answer:

The First Answer is B.

-14 is less than or equal to x.

Question options:

-14 > x


-14 ≥ x


-14 ≤ x


-14 < x

Answers

Answer:

C

Step-by-step explanation:

This sign "≤" has both the less sign and the equal sign so it indicates that -14 is less than or equal to x.

The answer Is C!! Good luck

A bag contains eight batteries, all of which are the same size and are equally likely to be selected. Each battery is a different brand. If you select two batteries at random, use the counting principle to determine how many points will be in the sample space if the batteries are selected without replacement.

Answers

Answer:

7*6*5*4*3 = 7P5 = 2520

Step-by-step explanation:

There will be 56 points in the sample space when two batteries are selected without replacement from the bag.

To determine the number of points in the sample space when selecting two batteries without replacement, we can use the counting principle.

The counting principle states that if there are m ways to do one task and n ways to do another task, then there are m * n ways to do both tasks together.

In this case, the first battery can be selected in 8 ways (since there are 8 batteries in the bag).

After selecting the first battery, there are 7 remaining batteries in the bag. For the second battery, there are 7 ways to select it (one less than the previous selection).

Therefore, the number of points in the sample space is given by multiplying the number of possibilities for the first selection (8) by the number of possibilities for the second selection (7):

8 * 7 = 56

There will be 56 points in the sample space when two batteries are selected without replacement from the bag.

To know more about  "replacement."  here

https://brainly.com/question/13572039

#SPJ2

Can someone help me? I’ll reward points + brainalist

Answers

Step-by-step explanation:

the question of your answer is d

Answer:

Step-by-step explanation:

Describe the translation from the red figure to the blue figure

Answers

Answer:

whattt do I have to do translate what???

Answer:

The blue image is a translation to the red image

Step-by-step explanation:

Pls help no links pls pls pls

Answers

Answer:

x=20

it told me the answer is too short but that answer is right

Sally told Joe that if you are reducing an image, the scale factor is less than 1, and if you are enlarging an image, the scale factor is greater than 1. Is Sally correct? Explain.

Answers

Answer:

YES!

Step-by-step explanation:

if its less than 1, then ur reducing

ex. = 1 x 0.5 = 0.5

If its greater than 1, then ur increasing

1  1.5 = 1.5

Works with any number

i dont know how do i delete this

Tyrell buys a sandwich for $7 and some cookies that cost $0.75 each. To use his debit card, Tyrell must make a purchase at least $10. how many cookies does he buy

Answers

Tyrell needs to buy 4 cookies

The ratio of adults to children at a museum is 2:7 which table represents this ratio.
refer to pictures

Answers

Answer:

D

Step-by-step explanation:

Find the graph that has equivalent ratios to 2:7 make sure your order is right.

2:7 equals 6:21 for example; 2 x 3=6   7 x 3=21

D

D
Multiply both numbers by the same value to find your answer

Lisa mows her neighbor’s lawns to earn money. She charges $8.75 per hour. She mows 8 lawns per month, and each lawn takes her 3.5 hours to complete. How much does Lisa earn each month for her lawn mowing services?

Answers

So u multiply the hours and how much she charges. Then multiply what you got with how many times she mows the lawn. So the answer is 245. She makes $245

is a horizontal line a linear function

Answers

watch youtub video /watch?v=DLzxrzFCyOs

What type of number is 1/3?

Select each correct answer.

real
rational
natural
whole
integer
irrational

Answers

Answer:

1/3 is a rational number

Does the relation in the table represent direct variation, inverse variation, or neither? If it is director
inverse variation, write an equation to represent the relation. Explain your answer.

Answers

9514 1404 393

Answer:

  inverse

  y = 10/x

Step-by-step explanation:

Inverse variation is described by an equation of the form ...

  y = k/x

The value of k is a constant equal to ...

  k = xy = 5·2 = 10·1 = 15·2/3 = 20·1/2 = 10

__

Here, the products of the x- and y-values are all 10, so the inverse variation equation is ...

  y = 10/x

Brian buys 5 cookies and 1 bottle of water. The total cost is $8.75. If the bottle of water costs $1.25, which equation can be used to determine the cost of 1 cookie?

Answers

You have to subtract $1.25 from $8.75 to get $7.50. Since he bought 5 cookies, you need to divide $7.50/5 to get $1.50. So, the cost of each cookie is $1.50

The segment show below could form a triangle?

True or False

Answers

false (i need more characters so yeah ansnanakjananajsjsmsmsmsnsnkskzk?

Answer:

False

Step-by-step explanation:

RULE 1 :ANY SIDE OF THE TRIANGLE MUST BE LESS THAN THE SUM OF THE OTHER TWO SIDES

6< 12+5

5<6+12

12<5+6 (this is wrong number 1)

RULE 2: ANY SIDE MUST BE LESS THAN THE SUBTRACTION OF THE SMALLER SIDE AND THE BIGGER SIDE

6>12-5(wrong number 2)

5>12-6(wrong number 3)

12> 6-5

IT ONLY TAKES ONE WRONG TPO PROVE THIS IS NOT CORRECT

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