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

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

Answer: 75

Step-by-step explanation:

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

a*1= 15*5

a= 75

watch youtub video /watch?v=DLzxrzFCyOs

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

Answer:

1. B

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

Step-by-step explanation:

Answer:

The First Answer is B.

Answer:

x=20

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

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:

Step-by-step explanation:

the question of your answer is d

Answer:

Step-by-step explanation:

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 :)

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

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.

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]

Answer:

2r = 20

So, r = 10

Step-by-step explanation:

Answer:

see in pdf the solution is there.

Step-by-step explanation:

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

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.

Answer:

1/3 is a rational number

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

Answer:

whattt do I have to do translate what???

Answer:

The blue image is a translation to the red image

Step-by-step explanation:

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

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

Answer:

Step-by-step explanation:

ES 100 CHAOOOOOOOOOOOOOOOOOOOOOOOO

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

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

Answer:

A

Step-by-step explanation:

Answer:

Step-by-step B. is your answer

explanation: