Quick IM timed!!
A researcher is comparing three new formulas for grass killer. To conduct the experiment, the researcher purchases 30 pieces of sod from various vendors to use in the study. The 30 pieces of sod are laid out in three different areas. The researcher places three slips of paper in a bowl labeled formula 1, formula 2, and formula 3 and randomly picks a piece of paper to apply that formula to the sod in the first area. Then the researcher picks again and applies that formula to the second area. Finally, the last formula is used on the last area.

Which component is missing from the researcher’s process?

A The researcher should not have laid out the pieces of sod in different areas.
B The researcher did not randomly assign the pieces of sod to the treatment groups.
C The researcher did not randomly pick the vendors when purchasing the pieces of sod.
D The researcher did not use randomization when selecting the pieces of sod from the vendors.

Answers

Answer 1

Answer:

The researcher did not randomly assign the pieces of sod to the treatment groups.

Step-by-step explanation:

Edge 2020/2021

Answer 2

Answer:

The researcher did not assign the chosen pieces of sod to treatment groups.

Step-by-step explanation:

The researcher needs to create three treatment groups, each containing 10 pieces of sod, and assign the chosen pieces of sod to these groups. Without this step, it is not clear how the three formulas will be applied to the pieces of sod.


Related Questions

lindsey made 400 tarts. she sold 3/5 of them in morning and 1/4 of the remainder in the afternoon. how many tarts did she sell in the afternoon?

Answers

Answer:

40 tarts

Step-by-step explanation:

Lindsey had 400 tarts to start with, then she sold off 3/5 of them. Hence find the number of tarts left (2/5 of the original amount). Then she sold 1/4 of the remaining tarts. Therefore, find 1/4 or 2/5 of 400. The equation would be;

[tex](\frac{1}{4})(\frac{2}{5})(400)[/tex]

Now one just has to solve the equation;

[tex]\frac{1}{10}(400)[/tex]

40

She sold 60 tarts in the after noon.

Find the volume, in cubic feet, of the composite solid below, which consists of a pyramid sitting on top of a cube. The pyramid has the same base as the cube.

Answers

Answer:

2,112 ft³

Step-by-step explanation:

Volume of composite solid = volume of pyramid + volume of cube

✔️Volume of square pyramid = ⅓(a²)*h

Where,

a = 12 ft

h = 8 ft

Plug in the values

Volume of pyramid = ⅓(12²)*8 = 384 ft³

✔️Volume of cube = a³

Where,

a = 12 ft

Plug in the value

Volume of cube = 1728 ft³

✔️Volume of composite solid = 384 + 1728 = 2,112 ft³

what is the triangles congruence theorem could you use to prove the triangle ADE is congruent to Triangle CDE



A) side angle side triangle congruence
B) angle side angle triangle congruence
C) side side side triangle congruence
D) side side angle triangle congruences ​

Answers

Answer:

I belive its A

Step-by-step explanation:

because it cant be b c nor d

Answer:

B

Step-by-step explanation:

A and C are congruent and so is AE and CE and E has congruent angles AKA angle side angle

A = (-7,-2) and B = [-3,-2)
A u B =

Answers

Answer:

Step-by-step explanation:

https://web.gccaz.edu/~johwd63181/MAT142/chapter_1/solutions/section%201.4%20solutions.pdf

Convert each part of the ratio 2:3 to percentage​

Answers

66.66666666........%

WILL GIVE BEAINLIEST!!! Read the paragraph from a narrative. What is the purpose for using descriptive language in the paragraph? Entering the hallway, I inched by the hurling, squawking mass of kids. The sound was deafening as everyone reconnected from their summer apart. A million eyes on my back looked right through me. I was invisible. O It provides a picture of the hallway that reflects the character's mood. O It uses a simile to make the point that the hallway is crowded. O It offers sensory details that create a sense of anticipation. It shows how alone the character feels in the crowded hallway.​

Answers

Answer:

d

Step-by-step explanation:

got itt right

Answer:

D

Step-by-step explanation:

445.76×9.634 is approximately equal to

Answers

Answer:

Step-by-step explanation:

It sounds like you are asked to estimate it. That's a very valuable skill.

9.634 is about 10

445.76 is about 446

So an approximate answer is 446 * 10 = 4460

How close is that to the actual answer? Let's find out.4294.45

On a test, if you get an answer like 4460 in your head, and your calculator says 4294.45, you are pretty certain that you have done the question correctly.

Solve the problem by entering and solving the equation.
Jenny earned 100 of a possible 132 points on a test. She lost 4 points for each incorrect answer. How many
incorrect answers did she have?


What’s the equation? Pls help

Look at the picture above to see the question

Answers

Answer:

132-4x=100 there are 8 incorrects

Similar triangles ABC and DEF are shown on the coordinate plane line t passes through points B, E, F, and C

Answers

Slope of BC = AB/AC, and Slope of EF = DE/DF

BC and EF both lie on the same line t, therefore the slope of BC equals the slope of EF.

What are Similar Triangles?

Similar triangles are two triangles having the same shape but different sizes, however, the ratio of their corresponding sides are equal.

How to Find the Slope of a LineSlope = change in y / change in xSlope between any two points on the same line are the same.

Given:

ΔABC ~ ΔDEF

Slope of BC = AB/AC

Slope of EF = DE/DF

BC and EF both lie on the same line t, therefore the slope of BC equals the slope of EF.

Learn more about similar triangles on:

https://brainly.com/question/2644832

Samantha is trying to determine the volume of a soda can for her science project which of the following statement describes as a mentor to calculate the correct volume of the soda can?

Answers

Answer:

it would be the 2nd option

Step-by-step explanation:

the volume of a soda can is like finding the volume of a cylinder. (The volume of a cylinder is  (π r^2 x h) 3.14 times the radius squared, times the height.)

Which is an irrational number between -9 and -10?

Answers

Answer:

maybe -9.1666 top second one?

Answer:

-sqrt85

Step-by-step explanation:

An irrational number is a number that cannot be written as fraction a/b where and b are integers

sqrt85 is simplified, and cannot be written as a/b with integers a and b, therefore -sqrt85 is irrational.

In △LUV, UV¯¯¯¯¯¯¯¯=UL¯¯¯¯¯¯¯ and the measure of ∠U=42.6°. The measure of ∠L=(3x+y)°and the measure of ∠V=(4x−3y−0.8)°. Find the value of x.


21.2

18.8


40.4


32.1

Answers

Answer:

x = 34.06

Step-by-step explanation:

The sum of angles in the triangle LUV is 180 degrees

Given

∠L=(3x+y)°

∠U=42.6°

∠V=(4x−3y−0.8)°

Since ∠L+∠U + ∠V = 180 degrees

Substitute:

3x+y + 42.6 + 4x - 3y - 0.8 = 180

7x - 2y - 41.8 = 180

7x - 2y = 221.8 ... 1

Since UV = UL, hence the triangle is isosceles and <V = <L

3x+y = 4x-3y - 0.8

-x +4y = -0.8

x  - 4y = 0.8 ....2

From 2: x = 0.8+4y

Substitute into 1:

7x - 2y = 221.8

7(0.8+4y) - 2y = 221.8

5.6 + 28y-2y = 221.8

26y = 221.8-5.6

26y = 216.2

y = 8.32

Get x

x = 0.8+4y

x = 0.8+4(8.32)

x = 0.8 + 33.26

x = 34.06

Note that it was assumed that <V = <l since the question is not clear

Which is the best estimate for the percent equivalent of
7/15?
0 21%
022%
O 46%
O 47%

Answers

I think too is 22

I hope it is

In the figure below, ma = 7x + 5 and mb = 28x. The angles are
supplementary
Find the ma
b
a
40 degrees
140 degrees
35 degrees
5 degrees

Answers

Step-by-step explanation:

Since the 2 angles are supplementary,

(7x + 5°) + 28x = 180°.

=> 35x + 5° = 180°

=> 35x = 175°

=> x = 5°.

Hence Angle A = 7(5°) + 5° = 40°.

I think 40 degrees ....

-1/4 + -3/8

show your work

Answers

Answer:

1 3/4, or 1.75

Step-by-step explanation: -0.25 + - 1.5 = 1.75

-1*2/4*8+-3/8
-2/8+-3/8
(-2+-3)/8=-5/8

i GUIVEEREEEE BRAINLILSTTT

Answers

Answer:

The answer is 26cm

Step-by-step explanation:

what I did was that I divide 130/5 which gave me 26

Answer:

F: 52 cm

Step By Step Answer:

130 divided by 5 equals 26

26 times 2 equals 52

Since last week, the change in value of Nicki’s favorite comic book was −$24. Which statement BEST describes the meaning of this change in value? The comic book is now worth $24.

Answers

Answer:

that the priced dropped 24 dollars or decreased

plz solve for brain thing.
surry. im new

Answers

Answer:

1. 1/4 because rectangle B takes up 1/2 of the space and the two triangles together take up 1/4.

2. 1/2, because it is twice as big as C, which takes up 1/4 of the space.

3. 1/8, because both A and D together take up 1/4 of the space, and they are both the same size

4. 1/3, because the triangles around it each take up 1/6 of the space

5. 1/6, because it is half as large as square J, which takes up 1/3 of the space

Step-by-step explanation:

(hope this helps!)

The answers to each part is mentioned below.

What is trapezoid?     A trapezoid, also known as a trapezium, is a flat closed shape having 4 straight sides, with one pair of parallel sides. The parallel sides of a trapezium are known as the bases, and its non-parallel sides are called legs.

       

Given is a trapezoid as shown in the image.

[A] -

The fraction is given by the ratio of square area and the trapezoidal area as -

{A(Square)/A(Trapezoid)} = A(C)/A(X)

[B] -

The fraction is given by the ratio of rectangle area and the trapezoidal area as -

{A(Rectangle)/A(Trapezoid)} = A(R)/A(X)

[C] -

The fraction is given by the ratio of triangle area and the trapezoidal area as -

{A(Triangle)/A(Trapezoid)} = A(T)/A(X)

[D] -

Total area of the figure [Z] → A{Z} = 4 x (1/2) x a x a = 2a².

Area of a square [J] → A{J} =

The fraction is given by the ratio of square area and the area of the image -

{A(square)/A(Z)} = a²/3a² = 1/3

[E] -

The fraction is given by the ratio of a triangle area and the area of the image -

{A(triangle)/A(Z)} = {a²/2}/3a² = 1/6

Therefore, the answers to each part is mentioned above.

To solve more questions on fractions, visit the link below -

https://brainly.com/question/8520205

#SPJ2

evaluate 4+8 divide by 2 x(6-3)

Answers

Answer:

2

Step-by-step explanation:

= 4+8/2×(6-3)

= 12/2×6-2×3

= 12/12-6

= 12/6

= 2

where is the point ( 0,-4) located on the coordinate plane

A. on the y-axis

B. in Quadrant 3

c. on the x-axis

d. in quadrant 4

Answers

Answer:

A

Step-by-step explanation:

If you plot the point on a cartesian plane you see it is on the y axis

Answer:

D

Step-by-step explanation:

x + 3 = -x - 5 Solve

Answers

Answer:

x = -4

Step-by-step explanation:

x + 3 = -x - 5

subtract 3 from each side

x = -x - 8

add x to each side

2x = -8

divide 2 on each side

x = -4

What is the volume of the rectangular prism?

Answers

Answer:

V=whl

Step-by-step explanation:

Answer:63yd

Step-by-step explanation:

You have to count the first row of blocks which is 7 then side blocks which is 3

3x7 is 21

Then how many are in the top row going down which is 21x3 =63

I GIVE BRAINLILSTTTT

Answers

Answer:

The answer is H please brainleist :) have a good day!

Step-by-step explanation:

Convert 14 pounds to ounces in standard algorithm​

Answers

Answer:

244

Step-by-step explanation:

14 x 12 = 244

14 lb 224 oz

hope it helped i just looked it up and this is what i got

Time is 5.3 hours in rate is 35.0 mph what is the distance

Answers

Answer:

185.5 miles

Step-by-step explanation:

Use the formula d=rt

distance = rate x time

d = 35(5.03)

d = 185.5 miles

Answer:

185.5

Step-by-step explanation:

he incomplete table above summarizes the number of left-handed students and right-handed students by gender for the eighth grade students at Keisel Middle School. There are 5 times as many right-handed female students as there are left-handed female students, and there are 9 times as many right-handed male students as there are left-handed male students. if there is a total of 18 left-handed students and 122 right-handed students in the school, which of the following is closest to the probability that a right-handed student selected at random is female? (Note: Assume that none of the eighth-grade students are both right-handed and left-handed.)

A) 0.410
B) 0.357
C) 0.333
D) 0.250

Answers

Answer: A

Step-by-step explanation:

When you solve this system of equations, you get x=10 and y=8. Thus, 5*10, or 50, of the 122 right-handed students are female. . The data in the table above were ... The incomplete table above summarizes the number of left-handed students ... students by gender for the eighth-grade students at Keisel Middle School. There are 5 times as many right-handed female students as there are left-handed female ...

Answer:*stalks* thank u fo the free points daddy pig AY MAMI TURN AROUND lol i needa stop *T POSE* I AM THE T POSE  BIS

Step-by-step explanation:

Make x the subject of the formula w − y x = z

Answers

Answer:

hmm ..

just transfer the X at the right side and others on left side

Step-by-step explanation:

so you get

w-z = yx

so later

(w-z)/y = x

The required value of x for the equation w - yx = z  is (w - z)/y.

What is an equation?

An equation is a combination of different variables, in which two mathematical expressions are equal to each other.

The given equation is,

w - yx = z

Solve to determine the value of x,

Subtract w from both the sides,

w - yx - w = z - w

-yx = z - w

Multiply with -1 both the sides,

yx = w - z

⇒x = (w - z)/y

The value of x for the given equation is (w - z)/y.

To know more about Equation on:

https://brainly.com/question/187506

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What is the formula for slope?

Will give brainliest for first correct.

Answers

Answer:

To solve the problems in this lesson, students use the slope formula, which states that m = (y2 -- y1) / (x2 -- x1). The slope formula can be read as "slope equals the second y coordinate minus the first y-coordinate over the second x-coordinate minus the first x-coordinate".

Hope helps

The formula for slope is rise over run!

Have a great day!

Which of the following statements are NOT true?

Answers

It’s the third option

Answer:

3.the slope of AB is different than the slope of BC

Step-by-step explanation:

It's not true because both of the slopes of the lines are equal which is 2/3

Dan makes several smoothies using 3 4/5 cups blueberries for every 2 2/3 cups of strawberries. Using these ratios, how many cups of blueberries will he need for 5 1/3 cups of strawberries?

Answers

Answer:7 3/5

Step-by-step explanation: 3 4/5 blueberries = 2 2/3 strawberries

                                               ? blueberries    =5 1/3 strawberries

do 3 4/5 times 5 1/3 which gives you 20 4/15.Now divide 20 4/15 by 2 2/3 which gives you 7 72/120 and you can simplify to 7 3/5.

Hope it helps  . :)

Answer:

I made this so you can give the other guy brainlyeist.

Step-by-step explanation:

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