Suppose that different ainounts of ferliicer had been used in different fields that were involved in trials of different types of wheal seeds. a) Explain how the use of different amounts of fertilizer confounds the experimental analysis in the absence of randamization. (n) Considering the regression models with explanatory variables, if the amount of fertizer were knoran, how could an analyst adjust for this contounding atteet? Choose the correct answer below. A Fertilizer use is not uniform for each type of seed. B. Differences in yield could be due sa fertilizer rather than seed variety C. Yield is uncorrelated with fertilizer use. D. Sand variety is highly correlated with fertizer USA (b) Chaose the correct answer below. A. Add a quanttative explanatory variable for whathar fartizer WAS USAD B. Add a cuenttative explanatory variable for the amount of fertilizer used. C. Add a categorical explanatory variable whether fertiizer was used. D. Add a categorical explanatory variable for the annount of ferliicer used..

Answer:

1/4

Step-by-step explanation:

Add the three amounts:

25 ml + 30 ml + 45 ml = 100 ml

These three amounts make 100 ml of fruit cocktail.

The amount of orange juice is 25 ml.

The fraction of orange juice is

(25 ml)/(100 ml) = 25/100 = 1/4

Answer: 1/4

Answer:

y = -4x + 7

Step-by-step explanation:

The least polynomial whose roots includes x = + i 2 and x = 1 is equal to x³ - x² + 4 · x - 4 = 0.

In this problem we must determine a polynomial, whose coefficients are all real and whose roots includes x = + i 2 and x = 1. According to quadratic formula, quadratic equations with real coefficients may have two complex roots of the form α ± β, where α, β are complex numbers.

Then, the complete set of roots for the least polynomial with real coefficients are:

x₁ = + i 2, x₂ = - i 2, x₃ = 1

Then, the factor form of the least polynomial is:

(x - i 2) · (x + i 2) · (x - 1) = 0

And the standard form of the least polynomial:

(x² - i² 4) · (x - 1) = 0

(x² + 4) · (x - 1) = 0

x³ + 4 · x - x² - 4 = 0

x³ - x² + 4 · x - 4 = 0

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(I think you need a-e, if not let me know and I will edit accordingly)

a: Divide both sides by 4

cm -> 12:8

3:2

b: Convert and divide both sides by 3

cm -> 150:9

50:3

c: Convert and divide both sides by 20

cm -> 100:80

5:4

d: Convert and divide both sides by 4

months -> 4:12

1:3

e: Convert and divide both sides by 250

g -> 2000:250

8:1

Hope this helps, have a nice day :)

Answer:

42

Step-by-step explanation:

To solve for d, we need to isolate d on one side of the equation.

First, let's simplify the left side by distributing 18 to the expression inside the parentheses:

18(d/3 - 6) = 18(d/3) - 18(6)

18(d/3 - 6) = 6d - 108

Now we have:

6d - 108 = 144

Let's add 108 to both sides to isolate 6d:

6d - 108 + 108 = 144 + 108

6d = 252

Finally, we can solve for d by dividing both sides by 6:

6d/6 = 252/6

d = 42

The solution is d = 42.

Answer:

$159.2

Step-by-step explanation:

$199 represents 100% of the cost, but since it is 20% off you subtract 20% from the 100%. Then you multiply what you got from the previous step to get your answer.

100%-20%=80%

199*0.8=159.2

Answer:

P = 37.4 m

Step-by-step explanation:

let the third side of the triangle be x

using Pythagoras' identity in the right triangle.

x² + 7² = 16²

x² + 49 = 256 ( subtract 49 from both sides )

x² = 207 ( take square root of both sides )

x = \(\sqrt{207}\) ≈ 14.4 m ( to 1 decimal place )

the perimeter (P) is then the sum of the 3 sides

P = 7 + 16 + 14.4 = 37.4 m

The answer is that the form of fiber art that involves placing two sets of parallel fibers at right angles and interlacing one set with the other is called weaving.

Weaving is the process of creating fabric by interlacing two sets of threads, known as the warp and weft, at right angles. The warp threads are stretched vertically on a loom, while the weft threads are woven horizontally across the warp. This results in a stable and durable fabric that can be used for a variety of purposes. Weaving has been used for centuries in cultures around the world to create clothing, textiles, and other functional and decorative items.

In weaving, the two sets of fibers are called the warp and the weft. The warp fibers run vertically and are held in tension on a loom. The weft fibers run horizontally and are woven over and under the warp fibers. This process of interlacing the warp and weft fibers creates a strong and flexible fabric, and it allows for the creation of various patterns and designs. Weaving is used in many different cultures and can be seen in a variety of fiber art forms, such as tapestries, rugs, and clothing.

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Answer:

It is the Commutative property.

Step-by-step explanation:  The word commutative comes from the word "move around" in this case all the numbers did was switch positions. Another example;  2+3=3+2  that is commutative property because the numbers were moved. Much similar to your problem

Answer:

0

Step-by-step explanation:

g(-3) = -(-3)-3

In point-slope form, the equation of the line passing through the points (-1, -4) and (2, 1) is

D. (y+4) = (5)/(3)(x+ 1)

To find the equation of a line in point-slope form, we need the slope of the line and a point that lies on the line.

Given the two points on the line: (-1, -4) and (2, 1), we can calculate the slope using the formula:

slope = (y₂ - y₁) / (x₂ - x₁)

slope = (1 - (-4)) / (2 - (-1))

= 5 / 3

choose one of the points, say (-1, -4), and use the point-slope form to write the equation of the line

y - y₁ = m(x - x₁)

y - (-4) = (5/3)(x - (-1))

y + 4 = (5/3)(x + 1)

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Answer:

20 feet

Step-by-step explanation:

We can use scale factors to represent the lengths. Since the flagpole's base is 4 times the tree's height, we can also say that the flagpole's height is 4 times the tree's height. Since the tree's height is 5 feet, the flagpole's height is 4 x 5, which is 20.

Answer:

             \(\bold{m=-\dfrac16}\)

Step-by-step explanation:

\(\bold{slope\, (m)=\dfrac{change\ in\ Y}{change\ in\ X}=\dfrac{y_2-y_1}{x_2-x_1}}\)

(1, 3)    ⇒   x₁ = 1,  y₁ = 3

(7, 2)    ⇒   x₂ = 7,  y₂ = 2

So the slope:

                    \(\bold{m=\dfrac{2-3}{7-1}=\dfrac{-1}6=-\dfrac16}\)

Answer:

unit rate of 3mins is,given that 15meters of 3 is a meter is 100decimeter that is 15m =15×100=1500/3=5 the and is A

Assuming no deposits or withdrawals are made,  the amount in the  account after 19 years is: 11,454. 133.

Using this formula

A = P(1+r/100)ⁿ

Where:

A = Amount =?

P = Principal = $4700

r = Interest rate =4.8%

n = the number of periods =19 years

Let plug in the formula

A = 4,700 (1 + 4.8/100)¹⁹

A = 4,700 (1 + 0.048)¹⁹

A = 4,700 (1.048)¹⁹

A = $11,454. 133

Therefore the amount is $11,454. 133.

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Answer:

$25.25

Step-by-step explanation:

amount per hour = total amount divided by hours worked

= $378.75/15

= $25.25

Answer: B.Side side side similarity theorem

Step-by-step explanation:

Hope this helps <3

^^^^ B.Side side side similarity theorem is correct

i just took the test and it was right!

Answer:

640 students

Step-by-step explanation:

We are told in the question that 4 out of every 5 students owns a bicycle

This also means , out of every 5 students only 1 does not have bicycle

Then we have a ratio of 4 : 1

This means a fraction of 4/5 students own a bicycle in a school

Based on this result, how many of the 800 students in a school own a bicycle?

This calculated as:

4/5 × 800

= 640 students

Therefore, 640 students out of 800 students own a bicycle

Jing will need to round up and buy 2 cans of stain to make sure she has enough to cover the entire surface of the hope chest.

A rectangular prism is a three-dimensional shape with six faces that are rectangles. It is also known as a rectangular cuboid. It has three dimensions: length, width, and height. The length is the distance along the longest side of the rectangular prism, the width is the distance along the shorter side, and the height is the distance perpendicular to the length and width. All of the faces of a rectangular prism are rectangles, and opposite faces are the same size.

To find out how many cans of stain Jing will need to buy, you need to first find the surface area of the hope chest. To do this, you will need to find the surface area of each of the six faces of the rectangular prism and then add them together.

The surface area of a rectangular is given by:

Surface Area = 2lw + 2lh + 2whprism

Where l is the length of the rectangular prism, w is the width, and h is the height.

If you know the dimensions of the hope chest, you can plug those values into the formula to find the surface area. For example, if the hope chest is 4 feet long, 3 feet wide, and 2 feet tall, the surface area would be:

Surface Area = 2(4)(3) + 2(4)(2) + 2(3)(2) = 24 + 16 + 12 = 52 square feet

Once you know the surface area of the hope chest, you can divide that number by the coverage area of one can of stain to find out how many cans Jing will need to buy. For example, if one can of stain covers 35 square feet and the surface area of the hope chest is 52 square feet, Jing will need to buy:

Cans of Stain = Surface Area / Coverage Area per Can = 52 square feet / 35 square feet per can = 1.49 cans

Therefore, Jing will need to round up and buy 2 cans of stain to make sure she has enough to cover the entire surface of the hope chest.

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Answer:

ZYX=39

ZXY=64

X=1

Step-by-step explanation:

The value of the rate of growth in Japan is - 0.55.

From the question above, :Birth rate = 7.7 per thousand

Death rate = 9.8 per thousand

Net migration = 0.55 per thousand

The rate of growth can be calculated using the following formula:

r = (birth rate - death rate) + net migration

Where,r = rate of growth

birth rate = number of live births per thousand in a population in a given year

death rate = number of deaths per thousand in a population in a given year

net migration = the difference between the number of people moving into a country (immigrants) and the number of people leaving a country (emigrants) per thousand in a given year

Putting the values in the formula we get,r = (7.7 - 9.8) + 0.55r = - 1.1 + 0.55r = - 0.55.

Therefore, the rate of growth in Japan is - 0.55.

Your question is incomplete but most probably your full question was:

thenet migration is confusing me. i thought of using the formula:[ (births + immigration) - (deaths + emmigration)] / total

population • 100 but im not sure how to do it with net migration.

Japan's birth rate is 7.7 per thousand and its death rate is 9.8 per thousand with a net migration of 0.55 ner thousand. Calculate r for Japan

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Answer: 12a + 6b

-2b

-8ab

Check: 48a^2 - 24b^2

Step-by-step explanation:

Answer:

let y=0

3x+6(0)=18

3x=18

x=6

(6;0)

Answer: 3

Step-by-step explanation: If you solve the equation, like I did in the attached image, you will see that the x-intercept is 3.

Answer:

1.1 gallons

Step-by-step explanation:

Given that the shape of the gutter is in the form of a rectangular prism with length 14 feet, width 2 inches and of height 9 inches.

The volume of the gutter = length x width x height

                   = 14 x 2 x 9

                   = 252

The volume of the gutter = 252 cubic inches

But with the given fact, we divide the volume determined by 231 inches.

Then,

the required volume in gallons = \(\frac{252}{231}\)

                                       = 1.090908

The gutter can hold water of 1.1 gallons.