18. Efectúa las siguientes multiplicaciones:

a) (4x + 3y) (x + 2y)
b) (2xy + 3)
c)
d) (2x2y5) (3x2y3 – 5x7y + 2x –9y)
e)

Answers

Answer 1

Answer:

b

Explanation:

my teacher told me the answer


Related Questions

if you could live abroad or some place else, where would it be and why?

Answers

Answer:

This ain't exactly one of those normal questions,... but you know,... I like it

Explanation:

You said abroad so I would live on a ship and sail the world as a passenger/merchant ship ,... not one of those huge cruisers but on one like the ones in "Shipwrecked" or "Swiss Family Robinson",... the answer as to why,... I think it would be incredible sailing and handling such a big vessel,... but also one that is small enough that you are still in touch with every wave that passes beneath you,... Happy Sailing,... Chow,...!

importance of a rhino​

Answers

Answer:

They're important grazers, consuming large amounts of vegetation, which helps shape the African landscape. This benefits other animals and keeps a healthy balance within the ecosystem. Local people also depend on the natural resources within rhino habitat for food, fuel and income.

Explanation:

I'm not sure but hope it helps.

Anyone know how to fill this out? Please help I'll mark brainliest!​

Answers

Answer:

Europa:

España

Africa:

Equatorial Guinea

Which city has the same relative position north of the equator that Santiago has to the south

Answers

Answer:

It Is New York Maybe

Explanation:

Which of the earth's spheres contains its plants and animals?

lithosphere
hydrosphere
biosphere
atmosphere

Answers

Hey there! I'm happy to help!

The lithosphere is all of the things under the Earth's surface. This includes some plants and animals, but not all of them.

The hydrosphere is all of the things in the water on Earth's surface. Once again, this includes many plants and animals, but not every single one.

The atmosphere is all of the things in the air or the sky of Earth. You guessed it, this includes many plants and animals, but not every single one.

The biosphere includes all living plants and animals on Earth's surface. The root word "bio" means life, so the biosphere is going to have to do with biology, biodiversity, biography (if you're a human), biochemistry, etc.

Have a wonderful day and keep on learning! :D

The answer is Biosphere. The biosphere has non living and living things in it

What does ethically produced mean? Does this phrase apply to sweatshops

Answers

Hey there! I'm happy to help!

Ethically produced means that a product was produced or a service was completed in a moral way and without infringing on the rights of others.

This phrase does not apply to sweat shops. These were places with unsafe and poor working conditions where workers were worked to their max and received low wages. The leaders of these companies were so concerned about profits that they did not take into account the well being of their employees. This is definitely not ethical, so products produced in sweatshops were not ethically produced.

Have a wonderful day and keep on learning! :D

Describe the relationship between the oceans and starts ?

Answers

Answer:

Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. pls mark me branilest pls

what is the solar system​

Answers

Answer:The solar System is gravitational bound system.Explanation:that hold the and objects orbit it. hope  this helps have great day

Hey my bad but it’s out of space

1. Discuss how one culture contributed to modern
science.

Answers

Answer:

The Maya contributed by creating the first observatories and they learned the celestial movements. Seismologist study earthquakes, and volcanologist study volcanic eruptions .

Question: The map above contains all five geographic regions of Georgia. Choose any THREE and for each, correctly identify it bynumber, describe the geography found there, and identify at least one of the major economic activities that takes place there because of its geography.

NEED HELP FAST!!!! Will give brainliest!!!

Answers

Here it’s a c d and b hope that helps a lot

The eras of the geologic time scale are best defined by a. Changes in climate b. Asteroid impacts c. Mass extinction events d. Old scientists in lab coats​

Answers

Hey there! I'm happy to help!

The Earth is extremely ancient (approx. 4.6 billion years), so its milestones are going to have to be something huge and very grand in scope that has also happened a few times.

Changes in climate can be significant, but these are not as important of an event in Earth's history to mark the different eras. While changes in climate can lead to more drastic things, the changes on their own are not good enough of a definer.

Asteroid impacts are pretty huge, but it doesn't make sense to have each era be marked by an asteroid impact because it is an extremely specific type of event and it hasn't happened a large amount of times in Earth's history, so this isn't going to be the principal marker.

Old scientists in lab coats is just a play on words of the question. Obviously the paleontologists and geologists chose what to have define the different eras, but it isn't like the scientists themselves ARE the actual markers.

The eras of the geologic time scale are best defined by C. mass extinction events. Asteroid impacts were under the umbrella of this, and that is why it wasn't the right answer. This is a much more broad term that represents the times that Earth was completely changed whether that be from an asteroid, an ice age, a volcano eruption, etc. These are huge in scope and happened many times in the history of the Earth, so it makes to have these mark the different eras.

Have a wonderful day and keep on learning! :D

Tropical climates exist between which of the following latitudes?

A.
30° north and 30° south

B.
40° north and 40° south

C.
50° north and 50° south

D.
60° north and 60° sout

Answers

Answer:

30° north and 30° south

Explanation:

The Tropic of Cancer passes through 23.5 degrees North, whereas the Tropic of Capricorn passes through 23.5 degrees South. Tropical climate is experienced between these latitudes that is usually characterized by high temperatures along with humid weather condition.

What is World Earth Day? Why is it celebrated?

Essay​

Answers

Explanation:

Every year on April 22, people around the world celebrate Earth day. The days Mark's the start of the environmental movement in 1970, and for the past 51 has resulted in policy change and a greater awareness of the environment. In 1969, junior senator goylord Nelson from Wisconsin announced college campuses to educate people about the dangers of air and water pollution.

The impact of the very first Earth Day was huge. It led to the creation of the environmental protection agency, which still exists today, and same of our most import environmental laws beings passed.

What has been the main result of violence in many countries?

Answers

Well I wouldn’t say there is a “true” answer but I would say religion and politics.

The direction or direction of an object or a place from the position of the observer is known as​

Answers

Answer:

I believe the answer is: apparent place

identify one type of human activity that could put pressure on the Blue Mountains National Park.

Answers

Answer:

Brisk walking or jogging

Yard work (mowing, raking)

Dancing

Swimming

Biking

Climbing stairs or hills

Playing tennis or basketball

Explanation:

explain the term"saltation of a running water on the external features of the earth​

Answers

Explanation:

Saltation: Some of the fragments of the rocks move along the bed of a stream by jumping or bouncing continuously. This process is called as saltation.

Based on the map, in which direction would you expect each of the following rivers to flow the Missouri River, the Colorado River, the Rio Grande?​

Answers

Hey there! I'm happy to help!

A great way to see the direction a river runs is to see the two endpoints of that river. Whichever one is higher will most likely determine the direction the river flows just due to gravity. If a river starts in a mountain and ends in a lake that is north of the mountain, you can expect that the river flows north and not south just due to gravity.

---------------------------------------------------------------------------------

MISSOURI RIVER

We see that the West end this river is in the Rocky Mountain area and the other end is in the plains/plateau area. The Rocky Mountains are much higher than plains, so that means that that is where the river starts, and it will be flowing away from that. We see that the direction it goes is generally East.

---------------------------------------------------------------------------------

COLORADO RIVER

The West End of this river is in the plateaus and highlands while the other is in the Rocky Mountains. The Rocky Mountains, the high point, at the East end of the river, so it is going to be flowing West due to gravity.

---------------------------------------------------------------------------------

RIO GRANDE

This river also starts in the Rocky Mountains and appears to flow down into the highlands and plains. Since the Rocky Mountains are at the North part of this river, it is going to be flowing South.

---------------------------------------------------------------------------------

Have a wonderful day and keep on learning! :D

5. Answer the following in one word or one sentence. a. A plant having two halves which snap shut when an insect sits on it. b. The modified sucking roots in parasitic plants. C. A relationship between two organisms in which both are benefited. d. The tiny pores present on the leaves through which gases enter and exit the plant.​

Answers

Answer:

a.The Venus flytrap.

b.haustoria.

c.Symbiosis.

d.stomata.

Hope it helps you.

the question are in the picture​

Answers

Answer:

1. 6:00

2. Pacific- Los Angeles, San Francisco; Mountain- Denver, Salt Lake City; Cental- Chicago, San Antonio; Eastern- Indianapolis, New York City

3. 7:00 in Washington D.C., 5:00 in Phoenix, 4:00 in Seattle

4. 1:00 in Washington D.C., 7:00 in Honolulu, 9:00 In Juneau

Explanation:

Which of the following are the leading native languages spoken in the United States? Select all that apply.

Spanish
Chinese
Italian
Russian
English
Korean
French
Hebrew

Answers

Answer:

Spanish English French Russian Korean and Chinese

Answer:

English

Spanish

Chinese

French

Korean

Russian

Explanation:

of Australia.
Which city is located at approximately 35°S, 149°E?
O Sydney
O Melbourne
O Canberra
O Adelaide


Answers

Answer:

Canberra

Explanation:

Hope it helps :)

how might people in siberia need to adapt to their environment?​

Answers

Answer:

Cardona concluded that the study shows how, over the more than 25,000 years that modern humans been lived in Siberia, various peoples have adapted to the region's cold weather and meaty food sources through selection on multiple genes that control several biological mechanisms.

Explanation:

Where can you find a grid system that uses longitude and latitude lines?

Answers

do you mean like this?

4. Answer the following questions in 10 to 20 words. a) Define chronicle. b) What type of practices had worsened the life of women in the medieval period? c) Why are more literary sources available for the study of the medieval period? d) Name any two new elements introduced in the field of technology during the medieval period​

Answers

Answer:a) a factual written account of important or historical events in the order of their occurrence.b) Women did not have access to equal rights in medieval times like they do now. Child marriage, widow burning, the purdah and polygamy further worsened the women's position.c) As compared with Ancient India, a large number of literary sources are available for the medieval period. They provide more reliable information and insight into the life of the people of the period.d) The period saw major technological advances, including the adoption of gunpowder, the invention of vertical windmills, spectacles, mechanical clocks, and greatly improved water mills, building techniques (Gothic architecture, medieval castles), and agriculture in general (three-field crop rotation).

Explanation:

hope it helps you

What are the basic tools of Euclidean geometry?

Answers

Answer:

The straightedge and the compass.

Explanation:

The name is due to the fact that connecting points with segments, prolonging segments and drawing circles with a given center and a given radius are the basic geometric constructions described in the first three Euclidean postulates.

Why are neutrons an important part of nuclear fusion in the sun? (Hint: Think of Einstein's equation!) How can two protons become a proton and a neutron? (Remember what we learned the second week):

Answers

Explanation:

1 Nuclear Fusion reactions power the Sun and other stars. In a fusion reaction, two light nuclei merge to form a single heavier nucleus. The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei. The leftover mass becomes energy. Einstein’s equation (E=mc2), which says in part that mass and energy can be converted into each other, explains why this process occurs. If scientists develop a way to harness energy from fusion in machines on Earth, it could be an important method of energy production.

2. A Hydrogen atom contains one Proton and zero Neutrons. When two Hydrogen nuclei collide, one of the Protons undergoes a type of radioactive decay called Beta-plus Decay, where a proton transforms into a neutron. This happens when there are too many protons in the nucleus, because the positive protons repel each other.

What best describes the purpose of the government

Answers

Answer:

El Gobierno es el principal pilar del Estado; la autoridad que dirige, controla y administra sus instituciones, la cual consiste en la conducción política general o ejercicio del poder ejecutivo del Estado.

Explanation:

Analiza la siguiente Frase: No todos han Reaccionado bien a la inmigración, hay compatriotas que atribuyen en el sentirse desplazados o interiormente humillados a la presencia de los Caribeños

Answers

Eu amo minha mãe e e minha família e a minha mãe ent não me perguntado pq eu amo tanto a minha mãe kkkkk sim achei engraçado

industries that process raw materials before being transported to the market​

Answers

Hey there! I'm happy to help!

The industries that process raw materials before being transported to the market are manufacturing industries. This normally takes place in factories or processing areas.

For example, a factory might take metal that it is obtained from the Earth ( a raw material) and manufacture it into a steel beam.

Manufacturing is known as the secondary sector of the economy as it is essentially the second step in the process after raw resources (primary sector) are obtained.

Have a wonderful day and keep on learning! :D

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Which would you rather attend prison or jail explain your answer Elabora un mapa mental sobre la vanguardia en el arte y la literatura, incluye en l dos ismos con sus respectivas caractersticas is it possible we can make a monkey out of a human what are the newtons law and their formulas Expand [tex](x-\frac{1}{x})^{1\\2}[/tex] , simplifying the coefficientsthe right answer is [tex]x^{5}-5x^{3}+10x-\frac{10}{x} +\frac{5}{x^{3} }-\frac{1}{x^{5} }[/tex]but i can't work it out PLEASE HELP! (Help please)If 1 liter = 1.057 quarts, how many quarts are in 1 kiloliter?( )quarts Read the following passage: "Football is still the most popular sport in the U.S. Nearly 40% of adults name it as their favorite. In 2018, the Super Bowl audience was five times larger than that for the NBA Finals. But Americas love affair with football is starting to fade away. Public approval of the National Football League is down ten points in the last five years. Recent polls show that for the first time, a majority of parents say they would try and talk their children out of playing the game if they asked about joining a team. Researchers suggest several possible causes for the decline, including disapproval of the on- and off-field behavior of professional players, concern over the physical and mental damage of the game at all levels of play, and a more general drop in sports viewership of all kinds. Whatever the cause, these trends are still new. Only time will tell if America and football are headed for a break-up or a make-up." The main idea of the reading is that football is losing popularity in the U.S. Which of the sentences below provides supporting details for that idea?In 2018, the Super Bowl audience was five times larger than that for the NBA Finals.Recent polls show that for the first time, a majority of parents say they would try and talk their children out of playing the game if they asked about joining a team.Only time will tell if America and football are headed for a break-up or a make-up.Americas love affair football is starting to fade away. The incident response team found malware on several user workstations. Trying to remove the malware infection is becoming time consuming. There is important data on the workstations. Which of these actions will recover the workstations back to a malware-free state? Check all that apply. a structure The table shows the distance below ground of items found at an archaeological site Researchers also found a mouse fossil at the same site. Which, if any, of the items in the table were a greater distance below ground than the mouse fossil shown? 1 Item Distance below ground (feet) Spoon key cup 42 62 bowl for Problems 14-17, find the LCM of the number pair Based on the suffix, what part of speech is wonderful?A. VerbB. NounC. AdjectiveD. Pronoun Lee started the week with the balance of -$120 in his checking account . He then deposited some money into the account . The ending balance is -$110 how much did lee deposit Every research project should make a contribution:a. To knowledge.O b. In terms of methodology.Oc.To the researcher's development.O d. Financially Choose whether the statement is fact, opinion or both. New York City is made up of five boroughs. Manhattan is the best place to go in New York City. a. fact c. both b. opinion one angle of linear pair is 4 time the other find the angles need answer asap How many dollars does 3 bottles of water cost ? Approximately 50-70% of body weight is made up of water. True False Mary is putting money into savings account. She starts with $750 in the savings accounts, and each week she adds $30. Let S represent The total amount of money in the savings account (in dollars), and Let w represent the number of weeks Mary has been equation relating S to W. Then use this equation to find the total amount of money in the savings account after 11 weeks. What do chia seeds help with your body? Many doctors rely on the use of intravenous medication administration in order to achieve an immediate response of a particular drug's effects. The concentration, C, in mg/L, of a particular medication after being injected into a patient can be given by the function C of t is equal to the quantity negative 10 times t squared plus 50 times t end quantity over the quantity t squared plus 4 times t plus 3 end quantity comma where the time, t, is hours after injection. Part A: What is the domain of the function C(t) based on the context of the problem? Show all necessary calculations. (5 points) Part B: Graph the function to determine the greatest concentration of the medication that a patient will have in their body. (5 points) Find the value of the expression 4a4 2b2 + 40 when a = 2 and b = 7.