# UnKnown

Most popular questions and responses by UnKnown-
## Chemistry

For the reaction CH3COOH- CH3COO + H+, which of the following statements is true? CH3COO- is an Arrhenius base. CH3COO- is a conjugate CH3COOH- is a Brønsted-Lowry acid.

*asked on May 12, 2017* -
## L.A

both "the road not taken" and "o captain! my captain! are analogies. write a paragraph comparing the authors use of analogy. what is analogy? how does frost use analogy in his poem? how does whitman use analogy in his poem? why has each of these analogy

*asked on March 6, 2015* -
## Edtech

what do you do about cyberbullying if the first adult you tell doesn't take you seriously A.Ignore it B.Tell the adult over and over again C.Tell the bully that you will tell his or her parents D.Tell another trusted adult

*asked on January 6, 2017* -
## World History

Which were characteristics of Alexander the Great's empire? Select all that apply. A. Alexandria, Egypt became a center for learning. B. Trade in Africa, Europe, and Asia declined. C. Greece became isolated from others ideas. D. The size of Greece's empire

*asked on September 25, 2018* -
## math

1. what is the term for data that are grouped closely together? a. outlier b. liner c. positive d. clustering 2. what association would you expect if you was graphing height and weight ? a. position b. nonlinear c. negative d. none of these 3. what

*asked on March 14, 2016* -
## History

Compare and contrast the treatment of different religions by rulers of the arab empire

*asked on October 31, 2018* -
## physics

What are the first three harmonics of a note produced on a 31.0 cm long violin string if waves on this string have a speed of 277.0 m/s? Hz Hz Hz

*asked on March 12, 2011* -
## math

1. What is the correct classification for the triangle shown below? A triangle has two angles measuring 68 degrees and 22 degrees. (1 point) acute, scalene acute, isosceles --- right, scalene obtuse, scalene 2. What is the value of x in the triangle? A

*asked on March 1, 2018* -
## Math

Mr. Green teaches band, choir, and math. This year, he has 57 students that take at least one of his classes. He teaches band to 25 students. There are 48 students who take either band or choir or both. There are 9 students who take both math and choir

*asked on March 27, 2013* -
## chemisty

Calculate the density of oxygen,O2 , under each of the following conditions: 1- STP 2- 1.00 atm and 35.0 C

*asked on October 8, 2008* -
## social studies

In which way was mali different from axum a- mali was influenced by christianity b- mali became primarily a muslim culture c- mali relied on trade across the indian ocean d- mali’s wealth was evident in their construction of stelae

*asked on November 16, 2018* -
## Science // Help

How did planetsmals form planets? They broke apart into smaller chunks. They collided and stuck together They cooled and pulled ice together They began to rotate If anyone took the assessment please help x

*asked on November 9, 2017* -
## math

Find the height of a triangle with area = 110 ft2 and base = 10 ft. answers are a)5.5 ft b)22 ft c)550 ft d)11 ft

*asked on February 16, 2017* -
## Math

A school has an equal number of boys and girls. You use a coin to simulate the first three students to arrive at school each day, where “heads” represents a boy and “tails” represents a girl. The table below shows a sample of 20 coin tosses T H T T

*asked on January 15, 2016* -
## Physical Science ASAP

1. true or false? a well-oiled machine has no friction. explain your answer. 2. True or false? Friction makes energy vanish. Explain your answer. 3. True of false? Electronic machines with no moving parts experience friction and get hot because electricity

*asked on October 23, 2013* -
## Complete the two-column proof

Complete the two-column proof Given: triangle SVX is congruent to triangle UTX and Line SV is || to line TU Prove: VUTS is a parallelogram Image: It's a parallelogram, with one line going from corner S to corner U and a line going from corner T to corner

*asked on January 18, 2017* -
## L.A

the following question asks about one or more selections from your literature textbook. You may use your textbook to answer the question. Select one question to respond to. Option 1: Write a short essay in which you examine the figurative language in

*asked on March 6, 2015* -
## World History

Which was the most important lasting impact of Alexander’s conquests? A. the spread of Greek ideas around the ancient world B. the creation of a new empire C. the division of the empire among his generals D. Macedonian domination of Greece

*asked on September 25, 2018* -
## social studies { somebody please help me please

What countries were members of the central powers in WW1? A. Austria-Hungary, Germany, Turkey*** B. France, , Germany, Russia C. France, Great-Britain, Russia D. Great-Britain, United States, Turkey 2. What caused the U.S to enter WW1 after 3years of

*asked on April 5, 2016* -
## Geometry

The parallelogram has the angle measuers shown. Can you conclude that it is a rhombus, a rectangle, or a square? Explain. So I'm going to describe the image then I'll give what I think would be a correct answer to explain. (I'm really bad at this)

*asked on February 6, 2017* -
## Social Studies

*** = what I think the answer is.. Please check my answers! 1. What was the result of the development of the Silk Road? Select all that apply. A. It brought new ideas such as Buddhism into China.*** B. It enabled the Shang to expand Chinese territory. C.

*asked on November 7, 2018* -
## Environmental Studies

If you could drop Mount Everest (height: 8848 m) to the bottom of an ocean trench, would its summit reach the level of the ocean's abyssal plains?

*asked on February 1, 2017* -
## Math

The pair of polygons is similar. Find the value of x. A. 2 in. B. 12 in. C. 13 in. D. 20 in.

*asked on December 19, 2017* -
## Social studies

In this discussion, you will discuss Chief Joseph’s speech. Post a detailed response to the discussion prompt. Then comment on at least two other posts. To understand how you will be graded for this assignment, read the Discussion Guidelines and Rubric.

*asked on November 20, 2018* -
## Social Studies

I really don't know......I've read my textbook over and over again but still don't know the answer........if someone could just give me a trusted website that i can read from or your answer in your own words. The question is down below!! Thank you The

*asked on March 1, 2016* -
## E.L.A

In which sentence does the prepositional phrase act as an adverb? A)Last evening, Anne suffered from a headache. B)The door to the attic was left open. **** C)Mr. Frank discussed the problem of noise in the annex. D)He bought a drink for Mr. Dussel. In

*asked on March 21, 2016* -
## Physics

A child of mass 40 kg stands beside a circular platform of mass 115 kg and radius 1.6 m spinning at 3.8 rad/s. Treat the platform as a disk. The child steps on the rim. a) What is the new angular speed; b) She then walks to the center and stay there. What

*asked on May 10, 2011* -
## Social Studies

Which physical feature covers most of Saudi Arabia? the Empty Quarter the Fertile Crescent the Zagros Mountains the Persian Gulf

*asked on February 25, 2015* -
## Math

What is a reasonable distance between two cities? 200km 200m ** 200cm 200mm

*asked on February 23, 2017* -
## Geometry

Solve for X, given BD=3x+5 and AE=4x+20 B is the midpoint of segment AC and D is the midpoint of segment CE. Solve for x, given BD=3x+5 and AE=4x+20

*asked on December 7, 2016* -
## Social Studies

Which of the following was the Catholic Church's response to the development of protestantism? A. It lauched the Reformation. B. It removed the pope as head of the church. C. Its leaders began the Counter-Reformation. D. It eliminated the inquisition. I

*asked on January 29, 2019* -
## Chemistry

Write the net ionic equation for the reaction that takes place between a solution of magnesium chloride and a solution of sodium hydroxide.

*asked on June 26, 2012* -
## Chemistry

You are preparing 500 mL of a 0.300 M acetate buffer at pH 4.60 using only sodium acetate, 3.00 M HCl, 3.00 M NaOH, and water. Calculate the quantities needed for each of the following steps in the buffer preparation. 1. Add sodium acetate to ~400 mL of

*asked on February 28, 2012* -
## World history; Check:P

Before the 1500s, who and what were the final authorities with regard to most knowledge? The church and it's leaders, the bible, and the king/queen. If they could not come up with an answer to a question, they would say that God did it. 2.What was the

*asked on February 12, 2013* -
## Spanish B

What is one of the main factors attributed to Panama's booming economy? A)The control of Los Estados Unidos over the Panama Canal. B)Panama's sole control over the Panama Canal. C)France's abandonment of the Panama Canal project. D)Joint control of the

*asked on May 17, 2016* -
## physics

Two point masses are located a distance, D, apart. The gravitational force of attraction between them can be quadrupled by changing the distance to

*asked on November 7, 2010* -
## Geometry; Check answers?

For each graph, find (a)AB to the nearest tenth and (b)the coordinates of the midpoint of AB. 1. Coordinates are A(-9, -6) B(6,6) D=19.2 Midpoint=(1.5,-6) 2.A(-2,-2) B(8,-6) D=10.77 midpoint= (3,-4) 3. A(0,3) B(-2,-2) D=5.4 Midpoint= (-1,0.5)

*asked on August 20, 2013* -
## Physcial Science

Interpreting Graphs: a. At 0oC, what is the state or states of the water in the beaker? b. At 80 s, what is the state or states of the water in the beaker? c. What did you observe about the temperature of the water inside the beaker when ice is still

*asked on November 30, 2015* -
## physics

A 0.2 kg conductor of length 0.8 m carries 2 ampere current to the right in a magnetic field. What is the magnitude and the direction of the magnetic field acting on the conductor if the net force on the rod is zero? (Assume that the rod is hung by two

*asked on June 12, 2011* -
## chemistry

Imagine that you have a 5.50 L gas tank and a 3.50 L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 105 atm , to what

*asked on October 8, 2008* -
## Science

A scientist from the United States conducts an experiment using miles per hour to measure speed. Why might this be confusing for scientists in other countries? A) Scientists in other countries don't usually perform experiments involving speed. B)

*asked on February 6, 2018* -
## math

"A 12-pack of cinnamon scented pencils sells for $3.00 at a school booster club sale. What is the sales tax rate if the total cost of the pencils is $3.21?" what is the answer and how do you show the work?

*asked on January 9, 2012* -
## Geography

How were ideas as well as goods spread along the Silk Road? A-books were sold along with other goods B-Libraries were established along the Silk Road C-New ideas were needed to make travel possible D-Traders shared ideas as they traveled

*asked on February 11, 2019* -
## Geometry

Write a two-column proof. Given: 7y=8x-14; y=6 Prove: x=7 I need help making a two-column proof with the statements and the reasons, please! Thank you! ( This is what I have so far) Statements | Reasons 1. 7y=8x-14;y=6 | Given 2. 7(6)=8x-14 | Substitution

*asked on September 7, 2016* -
## Physics

A 2.2 m-long string is fixed at both ends and tightened until the wave speed is 50 m/s.What is the frequency of the standing wave shown in the figure? picture has 6 waves

*asked on November 8, 2009* -
## Social studies

Which is an effect of deforestation A soil erosion B air pollution C water pollution D earthquakes

*asked on November 27, 2018* -
## Social Studies

The louisiana purchase most likely contributed to? A.ending the civil war B.U.s victory in the AmericAN revolution c.The development of manifest destiny D.the onset of industry revolution PLEASE HELP this question is from connections academy.

*asked on March 24, 2016* -
## math

find the missing number in each sequence... 30,_____,19, 13 1/2

*asked on October 24, 2016* -
## Physics

A 284 kg crate is pulled along a level surface by an engine. The coefficient of kinetic friction between the crate and the surface is 0.513. How much power must the engine deliver to move the crate at a constant speed of 7.2 m/s?

*asked on December 2, 2014* -
## Math

A class went on a field trip to see a play. Adult tickets cost $18 each and student tickets cost $12 each. There were 10 more students than adults that went to the play. If the trip cost $240 in all, how many adults and students went to see the play? Write

*asked on February 29, 2016* -
## Chemistry;HELP

Volume Problems Answer the following questions. Scan and upload your questions and answers to your student section labeled Volume Volume Problems. Identify the following chemical equations by type. 1. If an electric discharge produces 500 cm3 of ozone

*asked on August 21, 2013* -
## Physical Science

An astronaut in a spacesuit has a mass of 100 kilograms. What is the weight of this astronaut on the surface of the Moon where the strength of gravity is approximately 1/6 that of Earth?

*asked on October 15, 2013* -
## Unknown

Carl is asked to draw a triangle with the following specifications: -all sides have whole number lengths in centimeters -the sum of the lengths of the two shortest sides equals 9 centimeters -when the side lengths are placed in order from least to

*asked on April 7, 2016* -
## Language Arts

I have a Language Arts review crossword, and one hint is "Scrooge and Tiny Tim in A Christmas Carol". The word is 10 letters long, and has an E as the eighth letter. Thanks!

*asked on May 12, 2016* -
## social studies

By what means did Zhou rulers keep control over all the different regions of their kingdom? A. by keeping a strong army ready to put down any rebellion B. by treating the people with kindness and respect C. by starting a civil service based on the ideas of

*asked on November 3, 2018* -
## social stuides

What was the purpose of Jim crow laws in south Carolina? a. To stop African Americans from voting ** b. To stop poor whites from voting c. To take land for African Americans d. To help African Americans gain jobs What was the purpose of the freedmen’s

*asked on March 22, 2016* -
## Math

Which are the solutions to 8cos^2 theta-3cos theta=0, 0 degrees is less than or equal to theta which is less than or equal to 180 degrees ? Select all that apply a)0.0 degrees b)22.0 degrees c)52.0 degrees** d)68.0 degrees e)90.0 degrees** I’m pretty

*asked on May 27, 2018* -
## social studies

need help now ms sue Why did the ancient Chinese make loud noises at festivals and during holiday celebrations? A. to show loyalty to the emperor B. to celebrate their blessings C. to awaken the spirits of their ancestors D. to chase away evil spirits

*asked on November 3, 2018* -
## Geometry

Full Question: The coordinates for a rhombus are given (2a, 0), (0, 2b), (-2a, 0), (0,-2b). Write a plan to prove that the midpoints of the sides of a rhombus determine a rectangle using coordinate geometry. Be sure to include the formulas. Image

*asked on February 6, 2017* -
## math

tan theta= 15/8 and pi< theta

*asked on November 20, 2011* -
## Chemistry

Complete and balance the molecular equation, including phases, for the reaction of aqueous copper(II) chloride, CuCl2, and aqueous potassium phosphate, K3PO4. Balance the net ionic equation, including phases, for this reaction.

*asked on April 7, 2013* -
## Social Studies

How does the structure of the society of the Han dynasty reflect Confucian values?

*asked on November 7, 2018* -
## Geometry, Help

Help? I'm stuck. For each graph, find (a)AB to the nearest tenth and (b)the coordinates of the midpoint of AB. 1. Coordinates are A(-9, -6) B(6,6) 2.A(-2,-2) B(8,-6) 3. A(0,3) B(-2,-2)

*asked on August 20, 2013* -
## World history; Check:P Added sentences.

Write a one paragraph essay on how developments in technology influenced the rise and decline of the Assyrian Empire. The Assyrians were the first to use iron in their weapon works. They used it in spears, swords, shields and armor. They had the most

*asked on March 1, 2013* -
## Math

What is a simplified form of the expression sec^2x-1/sin x sec x ? a)cot x b)csc x c)tan x d)sec x tan x Please help me :(

*asked on May 27, 2018* -
## Math grade 10

Give quadrilateral EFGH ,with coordinates E(1,4), F(1,2), G(5,0) and H(3,4); verify that EG bisects FH

*asked on December 4, 2016* -
## Music

What could be done to minimize the commercialism in today’s music scene?

*asked on November 14, 2013* -
## math

1. If the legs of a right triangle have length 6 inches and 8 inches, what is the length of the hypotenuse in inches? (1 point) 11 13 10 16

*asked on November 12, 2015* -
## E.L.A

Which expression best represents the views a fatalist would have? a. “whatever will be , will be”*** b. “the best is yet to come” c. “we are still masters of our fate” d. “you don’t know what you have until it’s gone” In which of these

*asked on March 21, 2016* -
## World history; Check:P

1.What was the significance of the Twelve Tables? The Twelve Tables were significant because they were an early example of written law displayed publicly for all who could read them. They were later used as the laws for Rome. "The Twelve Tables established

*asked on February 12, 2013* -
## Even more health...

1. The health continuum is a representation of where your current health says falls--somewhere between illness and wellness. Identify the health status that might cause a decline in health and move you toward a state of illness. A. Enthusiasm for life B.

*asked on February 12, 2018* -
## Language Arts

Do you know where I can find chapter by chapter view of a book? Is a plot the same as a summary of a short story?

*asked on July 8, 2013* -
## Language Arts

Which of the following sentences contains a dependent clause? A. My mother, who never wastes anything, rinsed and saved the take-out boxes. B. We were running late, and we had to skip stopping by the post office. C. I had never been to New York before this

*asked on March 21, 2019* -
## math help connections acadamy

What is the outlier of the data set? 24,18,26,20,18,24,4,24 A.4 B.20 C.24 D.23 PLEASE HELP

*asked on September 13, 2018* -
## 7th grade Math

Mrs.Jackson earned a $500 bonus for signing a one-year contract to work as a nurse. Her salary is $22 per hour. If her first week's check including the bonus is 1,204, how many hours did mrs.jackson work

*asked on November 9, 2017* -
## Math

Which is Q = 200P/L solved for P? A. P = QL/200 B. P = 200L/Q C. P = 200QL D. P = 200/QL I think it's A, am I correct?

*asked on March 13, 2019* -
## Science (Graphing) ASAP

Maria walks at a constant speed of 2 m/s for 8 seconds. a. Draw a speed vs. time graph for Maria’s motion. b. How far does she walk? I wanted to know what numbers would be on the time (x vaule) I know the Y is the position (2,4,6,8,10,12 etc)

*asked on September 28, 2013* -
## Math

28. Molli purchased 8 apples for $2.96. While looking at her receipt, Molli divided $2.96 by 8. Why might Molli perform this calculation? (1 point) in order to find the total number of apples purchased in order to find out how much she paid per apple in

*asked on October 5, 2016* -
## math

Jan says if you double each of the dimensions of a rectangular box, it will take twice as much wrapping paper to wrap it. How do you respond?

*asked on October 28, 2011* -
## Health and Physical Education

1. The passing traits from parents to their children is a biological process called ______. A. Environment B. Gender C. Values D. Heredity **** 2. A ______________ is something a person works hard to accomplish. A. Consequence B. Decision C. Goal **** D.

*asked on February 12, 2018* -
## Math (Probability)

A standard number cube with the numbers 1 through 6 is rolled. Find the Probability of rolling a number greater than 5. 1/6 *** 1/3 1/4 2/3 Thanks In Advance!

*asked on May 22, 2017* -
## science

1. The images above show particles in a medium. Which of the following shows the worst conditions for a sound wave travel? A B C D is the answer A? Which of the following correctly describes a radio wave? A long wavelength and high frequency B long

*asked on June 3, 2015* -
## Physical Science ASAP

A child weighing 200 newtons is sitting in the center of a swing. the swing is supported evenly by two ropes, one on each side. what is the tension force in one of the ropes?

*asked on October 23, 2013* -
## Physic

A ball is thrown horizontally from a cliff at a speed of 15 m/s and strikes the ground 45 meters from the base of the cliff. How high was the cliff (rounded to the nearest meter)

*asked on February 27, 2013* -
## Chemistry

What is the mass of 65.0mL of ethanol? the density of ethanol at room temperature=0.789g/mL

*asked on January 20, 2012* -
## Math

Ms. Sue could you give me some websites for classifying quadrilaterals and other polygons please? (NOT ASKING FOR ANSWERS!)

*asked on March 8, 2018* -
## Geometry

List the sides of the triangle in order from longest to shortest. Angle D is 86 degrees Angle F is 50 degrees Angle E is 44 degrees *xy=segment* A) EF, FD, DE B) FD, DE, EF C) EF, DE, FD D) DE, FD, EF My answer: I think it would be B but I'm not sure. If

*asked on December 7, 2016* -
## Algebra

In the following arithmetic sequence, what is the value of m? -2, 4, m, 16 . . .

*asked on December 7, 2018* -
## chemistry

Imagine that you have a 5.00L gas tank and a 3.50L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 145atm , to what

*asked on November 18, 2011* -
## Math

Solve the triangle for x. Side lengths are 9 feet, 8 feet, and 12 feet. x is the angle formed by the sides that are 9 feet and 8 feet long. a)41.8 degrees b)89.6 degrees** c)48.6 degrees d)90.4 degrees I’ve gotten both b and d, please help.

*asked on May 27, 2018* -
## CHEMISTRY!! D:

1. A sample of gas under a pressure of 622 kPa has a volume of 233 cm3. The pressure is increased to 988 kPa, while the temperature remains constant. What volume will the gas occupy at this pressure? 2. The pressure exerted by a gas is 2.0 atm while it has

*asked on September 3, 2013* -
## chemistry

consider the reaction 2HgCl2 + C2O4-2 ---> 2Cl2-1 + 2CO2 + Hg2Cl2 The initial rate of this reaction was determined for several concentrations of HgCl2 and C2O4-2 and the following rate data was obtained. TRIAL (1) [HgCl2](M)= .105 [C2O4-2](M)= .15 RATE=

*asked on March 25, 2007* -
## Physics

A 0.35 m2 coil with 50 turns rotates at 5 radians per sec2 in a magnetic field of 0.6 Tesla. What is the value of the rms current in the coil if the coil has the resistance of 3.3 Ù? Can you also show me how you got the answer? Thanks so much

*asked on January 29, 2013* -
## ART PLS HELP

Why might a college choose to use greek architectural elements such as columns The greek temple has often inspired the design of what type of american structure? A. amphitheater B. colosseum C. courthouse***** D. bridge AM I RIGHT?!? PLEASE LET ME KNOW

*asked on March 12, 2015* -
## Chemistry;HELP

1. A sample of gas under a pressure of 622 kPa has a volume of 233 cm3. The pressure is increased to 988 kPa, while the temperature remains constant. What volume will the gas occupy at this pressure? 2. The pressure exerted by a gas is 2.0 atm while it has

*asked on August 21, 2013* -
## Astronomy

What is the wavelength of a radio photon from an "AM" radio station that broadcasts at 1160 kilohertz?What is its energy in joules

*asked on July 15, 2018* -
## Physics

A car, in overtaking trailer, uniformly accelerated its speed from 40 kph to 90 kph in 8 seconds. Calculate the distance traveled during the period of acceleration.

*asked on August 29, 2016* -
## physics

Assuming that the human body has a 1.2-cm-thick layer of skin tissue and a surface area of 1.5m2 , estimate the rate at which heat is conducted from inside the body to the surface if the skin temperature is 34 ∘C. (Assume a normal body temperature of 37

*asked on January 28, 2015* -
## physics

The U.S. five-cent coin, the nickel, has a mass of 5.1 g, a volume of 0.719 cm3, and a total surface area of 8.54 cm2. Assuming that a nickel is an ideal radiator, how much radiant energy per second comes from the nickel, if it is at 24∘C?

*asked on January 28, 2015* -
## chemistry

i am given equation CH3COOH + NaOH ---> NaCH3COO + H2O 25ml of acetic acid solution 0.025L 12ml of mid point of titration 1mol of NaOH find molar concentration i use a balanced equation it's a 1:1 ratio finding NaOH molarity = mols/litre = mols/L molarity=

*asked on April 12, 2008*