Mrs. trahan samples her class by selecting 5 girls and 7 boys. this type of sampling is called?

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Answer 1
The type of sampling in the problem is called “stratified sampling”

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Read this excerpt from "mad cow, furious farmer. " look around your house. think about everything held up by the walls and floors. what if, say, just one corner of your house suddenly got squishy? what if the corner wiggled with the wind? nearby walls and pipes and roofing would bend with it. if that corner was not fixed, it could eventually ruin your entire house! that is a little like mad cow disease, a brain disease caused by a speck of material that eventually ruins the entire brain. the speck of material is called a "prion" and it is dangerous. the main subject of this excerpt is about how mad cow disease starts in the brain and can affect humans. how scientists study the brain and detect anger and madness. how prions can cause a barn to become unstable and dangerous. how farmers should protect barns and houses from cows and other livestock

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farmers must Vaccine their cows monthly to prevent the diseases to spread

Answer: ITS D

Explanation:

If r is a commutative ring, show that the characteristic of r[x] is the same as the characteristic of r.

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If R is a commutative ring, then, the characteristic of R{x} is the same as the characteristic of R.

What is a commutative ring?

In ring theory, a commutative ring can be defined as a ring in which the multiplication operation is considered to be commutative in nature.

Let R represent a commutative ring with characteristic K.

Therefore, we have: Kr = 0∀r ∈ R.

Assuming f(x) ∈ R(x)

Then, f(x) would be given by: [tex]a_n x^n + a_{n-1} x^{n-1} +.......+ a_1 x^1 +a_0=0[/tex]

Also, in some instances ai ∈ R and n ∈ N.

Finally, we would have:

[tex]Kf(x) = K(a_n x^n + a_{n-1} x^{n-1} +.......+ a_1 x^1 +a_0)\\\\Kf(x) = Ka_n x^n + Ka_{n-1} x^{n-1} +.......+ Ka_1 x^1 +Ka_0\\\\Kf(x) = 0\times x^n + 0\times x +.......+ 0[/tex]

Kf(x) = 0.

Therefore, we can infer and logically deduce that if R is a commutative ring, then, the characteristic of R{x} is the same as the characteristic of R.

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The ph scale is a measure of how __________ a solution is. what one word completes this sentence?

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The pH scale is a measure of how acidic a solution is.

What is a pH scale?

The unit of measurement to determine how acidic or basic a solution is, is done via a pH scale, which ranged from 0 to 14, on which 0 to 6.9 means that the solution is acidic, and 7 is neutral.

Hence, the pH scale helps to determine the acidic amount of the solution.

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Which term describes a person in the center of the political spectrum?

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Answer:

can you put the choises

Explanation:

thanks

During the 1950s, air travel industries, the entertainment business, and the electronics industry became highly productive. what happened as a result of new developments in these industries?

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Answer:

There were more jobs that became available as more businesses became more productive.

When balancing equations, a ____ can be placed to the left of a formula of a substance to make the equations balanced

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Answer:

I think the answer would be a coefficient

Explanation:

Hope this helps:)....if not then sorry for wasting you time and may God bless you:)

Where do scientists find pollen grains to study ancient climate change? what attribute of the pollen grains helps scientists identify the types of plants they belonged to?

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Answer:

1. in sediment layers

2.Shape

Explanation:i dont have one just trust me

Answer:

1. In sediment layers

2. Shape

Explanation:

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