True or false if a and b are square matrices, then ab =ba,

Answers

Answer 1

yes

Explanation:

it is true because it's the formula of mathematics

Answer 2
It’s a matrices so it is true

Related Questions

Find the exact volume of this cylinder in terms of π. refer to your staar 8th grade math reference sheet for the appropriate formula.

Answers

The exact volume of this cylinder is equal to 225π cubic centimeters.

How to calculate the volume of a cylinder.

Mathematically, the volume of a cylinder is given by this formula:

[tex]V = \pi r^2h[/tex]

Where:

h is the height.r is the radius.

Given the following data:

Height of cylinder = 9 cm.

Diameter of cylinder = 10 cm.

Radius = [tex]\frac{diameter}{2} =\frac{10}{2} =5\;cm[/tex]

Substituting the given parameters into the formula, we have;

[tex]V = \pi \times 5^2 \times 9\\\\V = \pi \times 225[/tex]

Volume = [tex]225\;cm^3[/tex]

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Years ago, home depot had an annual dividend of $0.90. if you owned 4,000 shares of home depot, how much did you receive annually in dividends?

Answers

Given:

# of shares = 4000

Dividend per share = 0.90

The income by dividends is the product of the number of shares and the dividend per share.

Income Dividends =  # of shares x Dividend per share

4000 x 0.90 = 3600

A huge rotating patch of particles in space drift together to form an increasingly dense ball. as it shrinks in size, the cloud _______.

Answers

A huge rotating patch of particles in space drifts together to form an increasingly dense ball. As it shrinks in size, the cloud rotates faster.

What is gravity?

Gravity is a physical property of the matter associated with the attraction of objects to each other, which can increase the density by speeding up such objects.

The gravity of our star (Sun) maintains all the planets of the solar systems in a constant and stable orbit.

Subsequently, planets have their own gravity that allows them to attract minor objects such as satellites.

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Two parallel lines are cut by a transversal which pairs of angles are congruent which pairs of angle

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When two lines are cut by a transversal, the pairs of angles on either side of the transversal and inside the two lines are called the alternate interior angles . If two parallel lines are cut by a transversal, then the alternate interior angles formed are congruent .

What is another name for an equilateral quadrilateral

Answers

Answer: square

Explanation:

The another name for an equilateral quadrilateral is rhombus.

An equilateral quadrilateral means quadrilateral with 4 equal sides.

A rhombus, often known as rhombi or rhombuses, is a quadrilateral with four equal-length sides in planar Euclidean geometry. The term "equilateral quadrilateral" refers to a quadrilateral whose sides all have equal lengths.

Therefore, the another name for an equilateral quadrilateral is rhombus.

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The octet rule states that in chemical compounds atoms tend to have the electron configuration of a

Answers

The octet rule states that atoms tend to form compounds in ways that give them eight valence electrons, and thus the electron configuration of a noble gas. An exception to an octet of electrons is in the case of the first noble gas, helium, which only has two valence electrons.

Which of these phrases from the excerpt does jay use to describe the american government? intelligent and well informed uniformly entertained erroneous opinion vested with sufficient powers

Answers

The phrase that Jay use to describe the American government is Vested with sufficient powers.

How is the American government about?

The United States government is known to be made up of 3 branches which are;

The legislative branch. The executive branch.The judicial branch.

Conclusively, They are known to be Vested with sufficient powers so as too function properly.

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Invisible lines that run east to west, parallel to the equator. the most important factor affecting climate.

Answers

Lines of latitude refers to the invisible lines that run east to west and are also parallel to the equator.

What are Lines of latitude?

This is referred to an imaginary line which divides the Earth. They run from east to west and are parallel to the equator.

As latitude increases, the intensity of the solar energy reaching an area decreases thereby leading to a cooler climate and vice versa.

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Which happens during interphase?

Answers

Interphase is the longest stage in the
eukaryote cell cycle. During interphase, the
cell acquires nutrients, creates and uses
proteins and other molecules, and starts the
process of cell division by replicating the DNA.
.. In this state the cell will exist without
dividing until the cell dies

A swimsuit is on sale for $ 29.75 $29.75. if the original price of the swimsuit is $ 35 $35, what is the percent of the discount?

Answers

The percentage of the discount of the swimsuit with original price of $35 and current price of $29.75 is; 15%

What is the discount percenttage?

We are given;

Current price of swimsuit = $29.75

Original price of swim suit = $35

Difference in price = $35 - $29.75

Difference in price = $5.25

Percentage discount = 5.25/35 * 100%

Percentage discount = 15%

In conclusion, the percentage of the discount of the swimsuit is 15%

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Which sentence best explains the speaker’s reaction to the nightingale’s song at the beginning of ""ode to a nightingale""?

Answers

The sentence that best explains the speaker’s reaction is; D: When he dies, he will no longer be able to hear the song of the nightingale.

What is the Speakers reaction?

The speaker envisions what might occur after the snapshot of his demise. This means that the feathered creature would continue singing as though nothing had occurred.  

The speaker would at present have "ears," obviously: or if nothing else. his cadaver would. This implies that the ears would be pointless due to the fact that there is no cerebrum to process the sounds.  

The feathered creature would be then singing a requiem a sort of chapel gathering with music sung for a dead individual.

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if an individual is heterozygous for a particular trait

Answers

An organism that is heterozygous for a trait has two different alleles for that trait. An allele is an alternative form of a gene (one member of a pair) that is located at a specific position on a specific chromosome.

which of the following best explains how the red scare following the second world war reflected the larger historical context?

Answers

The inference is that the red scare reflected the larger historical context as it revealed strategies by the US to gain support of other nations.

What is an inference?

An inference simply means the conclusion that can be deduced based on the information given.

In this case, the inference is that the red scare reflected the larger historical context as it revealed strategies by the US to gain support of other nations against Soviet expansion.

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Writing explain how to rewrite a percent as a decimal. then rewrite 48% as a decimal.

Answers

Answer:

0.48

Explanation:

provide reagents, intermediates and the final product for the reaction sequence.

Answers

In a chemical reaction different elements influence, some of them are the reagents, the intermediate products and the final products.

What is a reagent?

A reagent is a term that refers to a substance or compound added to a system to cause a chemical reaction.

What are the chemical intermediates?

Intermediate products are more elaborate compounds, destined for the production of final products, that is, they are compounds that are included as reagents in a reaction to obtain a certain product.

On the other hand, those substances that are produced halfway through a chemical reaction are also known as intermediates.

What are the products of a chemical reaction?

The products of a chemical reaction are the substances that arise after the reaction between two or more chemical substances.

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Use rules of inference to show that the hypothesis

Answers

ratio + L  + no one asked + bozo +

A student walks 2 km in 30 minutes. what is the student's average speed in km/hr?

Answers

Answer:

15 minutes per km

Explanation:

Divide 30 by 2 because your getting the rate of change hope this helps!:)

Houghton mifflin harcourt geometry (volume 2 teacher edition pdf)

Answers

Houghton Mifflin Harcourt geometry is known to be a popular textbook. An example of this geometry is trigonometry and angles.

What is Houghton Mifflin Harcourt geometry  about?

This geometry  textbook is written by  Houghton Mifflin Harcourt . It is one that helps student to build their existing knowledge on geography.

The term trigonometry is known to be a branch of mathematics that functions mostly with some special functions of angles and also their application in terms of calculations.

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which of the statements explains how an oxygen-rich atmosphere became possible on earth?

Answers

I’m sorry I didn’t understand the question you were trying to get answered. Please give the options and I can try to help you! Thank you.

When a strontium atom loses two electrons to form an sr2+ ion, the electrons are lost from the

Answers

Answer:

5s orbital

Explanation:

Answer:

Answer: When a strontium atom loses two electrons, it becomes a(n) cation with a charge of 2+. when any neutral atom loses an electron it becomes a cation that is positively charged ions and an ion gets the charge according to the number of electrons loses. 5s orbital

Explanation:

Two skydivers of different masses jump from a plane

Answers

The relationship between the net force of both sky divers is that; the net force for both skydivers is the same.

What is the net force experienced?

We are told that two skydivers of different masses are jumping out of an airplane. Now, at some point, both skydivers will slow down to the point at where they reach constant velocity.

Due to the fact that the velocity for both sky divers is constant, it means that no acceleration will occur and as such, the net force on each sky diver is zero.

Thus, we conclude that the net force for both skydivers is the same.

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How far from the end of the banjo string must a fret be so that the string's fundamental frequency is 330 hz when you hold it down at the fret?

Answers

The length of the end of the banjo string when the fundamental frequency is 330Hz will be 0.61m.

How to calculate the length?

The fundamental frequency will be given as:

f = v/2L

Let the required length be represented as L2.

Therefore, f1/f2 = L1/L2

L2 = (294 × 0.69)/330

L2 = 0.61m

Therefore, the length will be 0.61m.

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What are the disadvantages of using artificial blood brainly

Answers

Answer:

To be effective, a blood substitute has to function like hemoglobin in carrying oxygen to organs and cells inside the patient's body. The problem, however, is that hemoglobin outside of RBCs is toxic.

Explanation:

The writer wants to add a sentence after sentence 11 to conclude the passage with a quotation that effectively restates and reinforces the overall argument. which choice best accomplishes this goal?

Answers

The best conclusion reinforces argument is;Today is the best indicator of tomorrow, but today decreases in value for points further in the future.”

How to conclude a Passage?

When we are trying to conclude a passage, we are basically trying to close out the overall text or story line with a quote or quotes that best captures the idea or argument being portrayed in the original text.

Now, the argument from the text is a relationship between today, yesterday and tomorrow and the importance of today in that regards.

Looking at the given options as seen in the brainly link below, the best choice that reinforces the overall argument is that of political scientists Joseph Coates and Jennifer Jarratt who said “Today is the best indicator of tomorrow, but today decreases in value for points further in the future.”

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What is the best response to the following question? ¿qué debo hacer cuando tengo tos? debes vomitar. debes tomar medicina. debes moverse. debes enfermarse.

Answers

The best response for when you have a cough is:

"Debes tomar medicina".

What is the best response?

The question:

¿qué debo hacer cuando tengo tos?

Can be translated to:

What should I do when I have a cough?

The options (and the translations) are:

Debes vomitar (you must vomit).Debes tomar medicina (you must take medicine).Debes moverse (you must move).Debes enfermarse (you must get sick).

The only option that makes sense is the second one, so the correct answer is:

Debes tomar medicina.

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¿Qué debo hacer cuando tengo tos?

Debes tomar medicina.

For what does nixon take credit in this passage? living up to his most sacred commitment winning the vietnam war being a wise leader

Answers

Living up to his most sacred commitment is what Nixon was credited for in the passage.

Who was Nixon?

Richard Nixon was the 37th president of the United States and was well known for his sacred commitment.

His sacred commitment involved ensuring there was peace between countries which was why he did lots of diplomatic works during his tenure.

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Answer:

A) living up to his most sacred commitment

Explanation:

Got it right on edge!

Read the article and use the information to answer the following questions. female reproductive system how is the reproductive system different from other body systems?

Answers

The function of the female reproductive system is to promote fertilization and serve as a container for the new individual until the end of its gestation.

What is the female reproductive system?

It is in charge of physically and biochemically promoting the encounter between the sperm and the ovules generated by a female.

This union occurs in the uterus and, once the cells have been fertilized, a zygote is generated which, after nine months of growth, will become a new human individual.

Therefore, we can conclude that the female reproductive system differs from other body systems since it allows the fertilization of the ovum, pregnancy and the birth of a new individual.

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Answer:

Most body systems are necessary to keep an individual alive.

Unlike other body systems, the reproductive system is not essential to keep an individual alive.

Explanation:

:) <3

Convert into mathematical statement: six less than 2 times "y" is 34.

Answers

Answer:

2y-6=34 is the needed equation

Explanation:

The half life of rubidium 87 is about 48.8 billion years

Answers

you are missing a part of the question i believe?

A long, hollow wire has inner radius r1 and outer radius r2. the wire carries current i uniformly distributed across the area of the wire

Answers

The expression for the magnetic field strength from the ampere law when the radius of the hollow wire is considered will be zero.

What is ampere law?

It should be noted that ampere law simply means that for a closed loop path, the magnetic field is proportional to the size of the electric current.

From the complete question, the expression for the magnetic field strength will be zero since the radius is less than R1. In this case, no current is enclosed.

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