Soy bean type 1 yielded 125 bushels per acre last year at a research farm. This year, soy bean type 2, planted in the same location, yielded only 100 bushels per acre and there was a drought. The researchers do not know whether the difference is a result of the superiority of type 1 soy beans or the drought. What is this an example of?

Answers

Answer 1

Answer: confounding variables

Step-by-step explanation:

Confounding variables are outside influence that changes the effect of a dependent and independent variable. In this case the outside variable is the drought, which has changed the effects of the dependent and independent variables. This additional influence can be used to influence the outcome of an experimental result. Confounding variables can ruin an experiment and produce unwanted results.

Answer 2

Answer:

confounding

Step-by-step explanation:


Related Questions

If I have a package deal if $80 what is the shipping price? PLEASE HELP

Answers

17 dollar and 54 cents

On Rectangle QRST below, if Q is located at -6,-1 and S is located at 1, 5, find RT

Answers

Answer:

[tex]|RT|=\sqrt{85}$ units[/tex]

Step-by-step explanation:

On Rectangle QRST

QS is congruent to RT since they are opposite side of a rectangle.

If Q is located at (-6,-1) and S is located at (1, 5), we simply find the length of QS using the distance formula.

For points [tex](x_1,y_1)$ and (x_2,y_2)[/tex] on the coordinate axis,

Distance[tex]=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

In this case,[tex](x_1,y_1)=(-6,-1)$ and (x_2,y_2)=(1, 5)[/tex]

[tex]|QS|=\sqrt{(1-(-6))^2+(5-(-1))^2}\\=\sqrt{(1+6)^2+(5+1)^2}\\=\sqrt{(7)^2+(6)^2}\\|QS|=\sqrt{85}$ units[/tex]

Since

[tex]|QS| \cong |RT|\\ |RT|=\sqrt{85}$ units[/tex]

Lesson Check
Choose the correct answer.
5. Greg has 27 toy trucks. He divides them into
3 equal groups. How many toy trucks are in
each group?

Answers

There are 9 toy trucks in each group.

27 divided by 3 is 9. Therefore when you divide the trucks up in EQUAL groups the answer has to be 9.


Mark is 4 years older than his brother Mike. If the sum of their ages is 20 how old are they now?​

Answers

x + x + 4 = 20

x + x = 16

16 / 2 = 8

Mike is 8, and Mark is 12.

SERIOUS MATH HELP PLEAZE
SHOW WORK OR AN EXPLANATION
HELPPPPPPPPPPPP

Answers

Answer:

It's B.

Step-by-step explanation:

Z=-3, z=6

what is a unit rate?​

Answers

Answer:

A unit rate is like a calculator or price per unit. that you will have to divide the numerator by the denominator.

Step-by-step explanation:

Example: "A motorcycle travels 230 miles on 4 gallons of gasoline." basically you will have to find the average mileage per gallon of how much that motorcycle used.

I'm not sure if this helped. sorry

The coordinates for a quadrilateral are A(3, 5), B(7, 5), C(8, 3) and D(4, 3). Determine the type of quadrilateral.
Group of answer choices

Rectangle

Parallelogram

Square

Rhombus

Answers

Answer:

Rhombus

Step-by-step explanation:

Just graph on the coordinate grid.

Answer:

Parallelogram

Step-by-step explanation:

You have to put the coordinates in a Cartesian diagram and connecting the points you will find the figure

2/7 as a percent to the nearest whole number

Answers

29% (.285 is 29 percent rounded because u have to move two decimals to the right to get your percentage)

please help will give brainliest

Answers

Answer:

PLEASE GIVE BRAINLIEST IT IS 118

Step-by-step explanation:

(18x+28)+(7x+27) equals 180 degrees

25x+55= 180

25x=125

x=5

THIS MEANS THAT ANGLE ABC IS

18(5)+28.

90+28.

118 degrees. And since angle abc is equal to efg that is your answer.

Answer:

efg=abc

Step-by-step explanation:

18x+29+7x+27=180

25x+56=180

25x=124

x=124/25

18(124/25)+29= 118.28 or rounded 118

I want brainliest!!!

Which has a positive value in Quadrant III?
A) Cosine only
B) Sine only
C) Tangent only
D) Cosine and Sine

Answers

Answer:

C) Tangent only

Step-by-step explanation:

In quadrant III Tangent (& cotangent as well) only is positive.

Answer: Sine only (B)

Step-by-step explanation: i got it wrong and saw the right answer on USATP, if you don’t believe me please click on the image for proof.

What is the common ratio for the following geometric sequence: 4, -20, 100, -500, . . .

Answers

Divide any term by the one before it, and you'll get the ratio. -20/4=-5

YALL I NEED HELP MY DUMBSELF FORGETS TO DO THESE STUFF SMH

CAN U ALSO EXPLAIN HOW U GOT THE ANSWER PLZ THXX
I need to find the area

Answers

Area=1/2 x b x h
=1/2 x 7 x 3
= 21/2
=10.5

When graphing an equation in slope-intercept form, what is the first step.

Answers

Answer:

Typically the answer is Graph the y intercept because when you do slope intercept you cant always start with the origin unless you don't have a b to base it off of.

Solve for angle C.




Answers

Answer: 40º

Step-by-step explanation:

To find angle c, not give 2 angles at least, we must use a trigonometric function. With respect to angle c, we can see that we have the opposite and adjacent sides.

The trigonometric function that relates opposite and adjacent sides is tangent.

[tex]tan=\frac{opposite}{adjacent}[/tex]

[tex]tan=\frac{21}{25}[/tex]

[tex]tan^-^1=40[/tex]

Im thinking the answer could be 40

Translate the word phrase into a math expression.

15 fewer than the product of 4 and a number.


A. (4+x)−15

B. 15−4x

C. 4x−15

D. 4÷x−15

Answers

Answer:

es la(b

Step-by-step explanation:

There’s three answers

Answers

Answer:

D

E

F

Step-by-step explanation:

Because as long as they stay the same they can just be mixed.

In how many ways can five models line up to have their
photograph taken?
F. 120 G. 60 H. 25 I. 20

Answers

Answer:

120

Step-by-step explanation:

by using the basic counting rule, there are 5 positions first, then 4, then ,3 and so on down to one. so when you multiply them all together, you get 120. Also i took  a test with the same qeustion, and that was the anwer :)

Answer:

120

Step-by-step explanation:

5 times 4 times 3 times 2 times 1= 120

5 choices for first

1 choice already taken so 4 for the other model

3 for the other

2 for the other

and 1 for the other

=120

Its correct, trust me!

O terreno da fazenda de Eduardo foi aumentado 2 m na horizontal e 2 m na vertical. Se antes do aumento o terreno tinha o formato de um quadrado de lado x, qual a nova área após os aumentos?

Answers

Answer:

New area of Eduardo's farm after the increase = x² + 4x + 4

Nova área da fazenda de Eduardo após o aumento = x² + 4x + 4

Step-by-step explanation:

English Translation

The land on Eduardo's farm was increased by 2 m horizontally and 2 m vertically. If before the increase the land was shaped like an x-side square, what is the new area after the increases?

Solution

The previous area of Eduardo's farm is the are of a square with side lenght of x.

Area of a square = (side length)² = x²

Then, the land on Eduardo's farm was increased by 2 m horizontally and 2 m vertically.

New horizontal length of Eduardo's farm = (x+2)

New vertical length of Eduardo's farm = (x+2)

New area of Eduardo's farm = (x+2)(x+2)

= x² + 4x + 4

In Portugese/Em português

A área anterior da fazenda de Eduardo é a de um quadrado com comprimento lateral de x.

Área de um quadrado = (comprimento lateral)² = x²

Em seguida, o terreno da fazenda de Eduardo foi aumentado 2 m na horizontal e 2 m na vertical.

Novo comprimento horizontal da fazenda de Eduardo = (x + 2)

Novo comprimento vertical da fazenda de Eduardo = (x + 2)

Nova área da fazenda de Eduardo

= (x + 2) (x + 2) = x² + 4x + 4

Hope this Helps!!!

Espero que isto ajude!!!

HELP MATH ASAP PLEASE
I WILL GIVE BRAINLEST

Answers

Answer:

The answer is D

Step-by-step explanation:

Please help me with those questions please please help

Answers

a) Tan(38) = x/6
x = 6*Tan(38)
x = 4.69
b) Tan(75) = x/13
x = 13*Tan(75)
x = 48.52

Find the mode of the data.
41, 38, 37, 34, 37, 43, 37, 39, 41, 37

Answers

Answer:

Step-by-step explanation:

37

Answer: 37

Step-by-step explanation:

To find the mode, or modal value, it is best to put the numbers in order. Then count how many of each number. A number that appears most often is the mode. All you have to do is look for the number that occurs in any of those the lists the most and that number is the mode.

LUI
• Chicken nuggets, burger, hot dog
Apple Juice or milk
French fries or fruit
HOOD
8
The list below shows some of the possible
outcomes. List the missing possible outcomes
below.
ter and
ps the
- only
nd a
Chicken nuggets, apple juice, French fries
Chicken nuggets, apple juice, fruit
Chicken nuggets, milk, French fries
Chicken nuggets, milk, fruit
Burger, apple juice, French fries
Burger, milk, French fries
Burger, apple juice, fruit
Hot dog, apple juice, French fries
Hot dog, milk, French fries
Hot dog, milk, fruit

Answers

Answer:

cool cool no c um hi hi hi hi hi hi hi hi hi hi hi hi hu x

The chart indicates the time, speed, and velocity of five runners.

A 4-column table with 5 rows. The first column labeled runner has entries Garreth, Luigi, Elisa, Jasmine, Logan. The second column labeled total time has entries 45 minutes, 35 minutes, 40 minutes, 35 minutes, 35 minutes. The third column labeled speed has entries 6.2 miles per hour, 5.0 miles per hour, 6.2 miles per hour, 5.0 miles per hour, 5.6 miles per hour. The fourth column labeled velocity has entries 5.5 miles per hour west, 4.3 miles per hour east, 5.5 miles per hour west, 4.0 miles per hour south, 4.0 miles per hour north.
Which best describes the runners?

A.Garreth and Elisa ran the same distance but not the same displacement, Luigi and Jasmine went the same displacement, and Logan ran faster than Jasmine.
B.Garreth ran farther than Luigi, Elisa and Jasmine went the same distance, and Logan and Jasmine has the same displacement in the opposite direction.
C.Garreth and Elisa ran together, Luigi and Jasmine went the same distance, and Logan and Jasmine have the same displacement in the opposite direction.
D.Garreth ran less than Logan, Elisa and Jasmine went the same displacement, and Luigi and Garreth ran together.

Answers

Answer:

c (just took the test)

Step-by-step explanation:

Garreth and Elisa ran together, Luigi and Jasmine went the same distance, and Logan and Jasmine have the same displacement in the opposite direction.

As per the given information, in which the time, speed, and velocity of five runners, the statement that gives the best description about the runners is: “Garreth and Elisa ran ………..  in the opposite direction.” Hence, Option C is correct.

Who are called runners?

From a cardiovascular aspect, runners are highly fit athletes, but they frequently struggle with their balance, upper body strength, and glute power. Sports that use different muscles and gaits are recommended for runners.

While sprinters are taller and significantly more muscular, long-distance runners often have a shorter, lighter build. The types of workload each runner endures are a direct result of the differences between these two body types.

Logan and Jasmine moved in the opposite direction at the same speed as Jasmine, while Garreth and Elisa ran side by side. Luigi and Jasmine also covered the same distance.

Therefore, Option C is correct.

Learn more about runners from here:

https://brainly.com/question/2456125

#SPJ5

A circle has the equation (x + 1)2 + (»- 3)2 = 16. What are the coordinates of its center and the length of
its radius?

Answers

Answer:

wm hv

Step-by-step explanation:

everything

What is the Volume of the triangular prism, in cubic centimeters?

Answers

Answer: the answer is approximately 45.6

Step-by-step explanation:

Can someone help me

Answers

Answer:C

Step-by-step explanation:

How would you write and equation for a circle with a radius of 5 , centered at the point (-3,2)

Answers

Answer:

[tex](x+3)^{2} + (y-2)^{2} = 25[/tex]

Step-by-step explanation:

please help.will mark brainliest!

Answers

Answer:

1 an -5/2

Step-by-step explanation:

Write an expression to describe the sequence below. Use n to represent the position of a term in the sequence, where n = 1 for the first term. 89, 178, 267, 356, ...

Answers

Answer:

a(n)=89n

Step-by-step explanation:

Given the sequence 89, 178, 267, 356, ...

First Term, a(1)=89

178-89=267-178=89

This is an arithmetic difference with:

Common difference, d=89

The position of any term, n in an arithmetic sequence is derived using the formula:

a(n)=a(1)+(n-1)d

Substituting a(1)=89 and d=89

a(n)=89+89(n-1)

a(n)=89+89n-89

a(n)=89n

The expression that describes the sequence above is: a(n)=89n where n is the position of a term in the sequence.

The population of the United States, u, is about one hundred thousand less than the population of India, i. Write and equation that represents the two populations.


Answers

Answer: u = i- 100,000

Step-by-step explanation:

Hi, to answer this question we have to write an equation with  the information given:

Population of the United States = u

Population of India = i

Since the population of the United States, u, is about one hundred thousand less than the population of India, i, we have to subtract 100,000 (one hundred thousand) to the population of India (i). That expression must be equal to the population of United States (u).

Mathematically speaking:

u = i- 100,000

Feel free to ask for more if needed or if you did not understand something.  

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