# kevin

Most popular questions and responses by kevin-
## writing

Can someone please check my answers which of the following would always require a citation in a research paper? thesis statenment an anecdotal experience a quotation (answer) a humorous statement Which of the following shows the correct parenthetical

*asked on April 1, 2012* -
## Social studies help PLEASE

Which of the following factors helped trade to thrive during the Roman empire? Select all that apply. A. peace throughout the empire B. a shared religion throughout the empire

*asked on September 14, 2018* -
## geometry

The trapezoids are similar. The area of the smaller trapezoid is 564m^2. Find the area of the larger trapezoid to the nearest whole number. The smaaler trapezoid is 24m, and the larger trapezoid is 57m. Possible answers: 576m^2--3,249m^2--3,181m^2--14m^2

*asked on April 8, 2012* -
## physics

If a simple machine provides an increased output force, what happens to the output distance? Can someone please help

*asked on April 11, 2012* -
## physics

A spring gun shoots out a plastic ball at speed v0. If the ball's speed is increased by a factor of 2, what distance must the spring have been compressed?

*asked on November 18, 2016* -
## Spanish

ESTRUCTURA | 13.1 The subjunctive with verbs of emotion Emociones Completa cada oración con la forma correcta del verbo apropiado de la lista. Usa cada palabra sólo una vez The words in () are my guess. I need help with clarification and spelling

*asked on July 3, 2012* -
## english

Can someone check my work PLEASE.. Which of the following is not a strategy for revising your paper? Check for redundant language. Remove overly complicated language. Get rid of euphemisms and clichés. None of the above (my choice) Choose the correct word

*asked on March 29, 2012* -
## chemistry

In part B of my question, I was asked calculate the number of atoms in 0.615 mol of 13C (mass number of this Carbon is 13). I received the correct answer of 3.70E23 atoms. However, I do not know how to do Part C of my question, which asks "Based on your

*asked on September 16, 2012* -
## Statistics

The Jones family was one of the first to come to the U.S. They had 9 children. Assuming that the probability of a child being a girl is .5, find the probability that the Jones family had at least 5 girls.

*asked on October 1, 2017* -
## Geometry

A surveyor sights the far bank of a river at an angle of 110˚ to the near bank. She then moves 75 feet upriver and sights the same point on the far bank of the river at an angle of 150˚. What is the shortest distance across the river?

*asked on March 4, 2019* -
## geometry

Describe the image of D first reflected across line l then across line m. You have the letter D then a line up and down L then a space and then a line up and down M. Not sure how to describe the image.

*asked on March 13, 2012* -
## Chemistry - Stoichiometry

16.2g of magnesium reacts exactly with 25.3g of fluorine to produce magnesium fluoride, the only product. How many grams of magnesium fluoride could be produced from the reaction of 10.5g of magnesium with excess fluorine. This is simple if you use

*asked on August 25, 2005* -
## geometry

Is one flag a translation of the other, or a rotation image? Please explain looks like the flag is the same above the line as it is below the line. I think translation but not sure how to explain.

*asked on March 13, 2012* -
## Statistics

A marketing research firm wishes to determine if the residents of Caldwell, Idaho, would be interested in a new downtown restaurant. The firm selects a simple random sample of 120 phone numbers from the Caldwell phone book and calls each household. Only 62

*asked on November 9, 2015* -
## mat h

ms. buxx invested a total of $2000 in two savings accounts. The first account pays 3% interest per year and the second account pays 5% interest per yera. If the interest from both accounts totals $84 per yera, how much is invested in each account?

*asked on January 17, 2011* -
## geometry

find the image vertices for a dilation with center (0,0) and a scale factor of 4

*asked on March 13, 2012* -
## physics

Josh starts his sled at the top of a 2.0 m-high hill that has a constant slope of 25 degrees . After reaching the bottom, he slides across a horizontal patch of snow. The hill is frictionless, but the coefficient of kinetic friction between his sled and

*asked on March 7, 2012* -
## geometry

Find the area of the rhombus. Leave your answer in simpliest radical form. Looks like kite the left sied top corner is 60 degrees and the bottom right corner is 6. Possible answers are: 12sqrt3--36sqrt6--72--72sqrt3 Could someone please help.

*asked on April 8, 2012* -
## Physics

An electron is projected with an initial speed of (1.6x10^6 m/s) into the uniform field between two parallel plates. Assume that the field between the plates is uniform and directed vertically downward, and that the field outside the plates is zero. The

*asked on February 5, 2013* -
## Physics

A car comes to a bridge during a storm and finds the bridge washed out. The driver must get to the other side, so he decides to try leaping it with his car. The side the car is on is 19.5m above the river, while the opposite side is a mere 1.6m above the

*asked on March 7, 2015* -
## grammar punctuation

Fine the error in punctuation or capitalization 1. "After you've rested," Frank said, "please help me move these boxes." "Can we wait until later?" asked Emily. "I have a lot of homework." "It won't take very long." replied Frank. (my choice) Emily told

*asked on April 18, 2012* -
## Chemistry

For the reaction HCONH2(g) -->

*asked on May 30, 2018* -
## Chemistry

If a 45.3-g sample of potassium nitrate is dissolved in enough water to make 225 mL of solution, what will be the molarity?

*asked on February 2, 2012* -
## calculus

1)A function g is defined for all real numbers and has the following property: g(a+b) - g(a) = 4ab+2b2 find g'(x) A)4 B)-4 C)2x^2 D)4x E)does not exist not so sure where to start 2)If d/dx[f(x)] = g(x) and d/dx[g(x)] = f(3x, then d^2/dx^2 [f(x^2)] is

*asked on November 15, 2012* -
## math

swimsuit discounted 65% on sale for $20.30

*asked on December 18, 2011* -
## chemistry Molarity

You have 353 mL of a 1.25 M potassium Chloride solution, but you need to make a 0.50 M potassium Chloride solution. How many milliliters of water must you add to the original 1.25 M solution to make the 0.50 M potassium Chloride solution

*asked on December 11, 2010* -
## Math

A nickel pyramidal paper weight has a square base of sides 5 cm and a height of 3 cm. What is the mass of a dozen such paper weights if the mass of 1 cm^3 of nickel is 8.9g?

*asked on February 15, 2012* -
## Mathematics

At Harlan County Damn in Nebraska, the U.S. Bureau reports that the storage content of the reservoir decreased from 117,811 acre-feet (38.4 billon gallons of water) on Septmber 6, 2006 to 115,579 acre-feet (37.7 billion gallons of water) on October 6,

*asked on September 8, 2008* -
## Spanish

13.2 The subjunctive with doubt, disbelief, and denial Completar Completa cada oración con la forma correcta del verbo apropiado de la lista. word bank haber ir llegar querer resolver ser 1. No creo que el gobierno el problema de la contaminación

*asked on July 3, 2012* -
## Physics

A bicycle wheel of radius .7m is rolling without slipping on a horizontal surface with an angular speed of 2 rev/s when the cyclist begins to uniformly apply the brakes. The bicycle stops in 5s. Through how many revolutions did the wheel turn during the 5s

*asked on December 2, 2010* -
## grammar

Can someone please check my work? Thank you. Which of the style guides is most focused on professionals who are writing articles for publication? MLA APA Chicago (my choice Which of the style guides no longer recommends citing URLs? MLA APA (my choice)

*asked on March 30, 2012* -
## Math

A marketing research firm wishes to determine if the residents of Caldwell, Idaho, would be interested in a new downtown restaurant. The firm selects a simple random sample of 120 phone numbers from the Caldwell phone book and calls each household. Only 62

*asked on November 9, 2015* -
## chemistry

A 1.00 mol sample of N2O4 (g) is placed in a 10.0 L vessel and allowed to reach equilibrium accourding to the equation N2O4(g) 2NO2(g) K = .0004 Calculate the equilibrium concentrations of N2O4(g) and NO2(g)

*asked on September 19, 2011* -
## fornt class

what are the steps of the registration process form the viewpoint of front desk agent?

*asked on January 31, 2008* -
## English

What is the verb mood of the sentence? Wear your coat when you are in the snow. indicative mood imperative mood subjunctive mood

*asked on January 9, 2012* -
## social studies

Which of the following is the best description of the Arabian Peninsula's physical features? A) vast deserts and small mountains B) great stretches of grassland and gentle hills C) dense tropical rainforests idk the answer

*asked on March 15, 2019* -
## algebra 2b

A simple random sample of 50 adults was surveyed, and it was found that the mean amount of time that they spend surfing the Internet per day is 54.2 minutes, with a standard deviation of 14.0 minutes. What is the 99% confidence interval (z-score = 2.58)

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

Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar the solution has a density of 1.38 grams per milliliter. This concentration of H2SO4 is often used in lead storage

*asked on January 9, 2011* -
## Algebra

On a math test, k students in the class averaged 80%. The remaining students in the class,q students, averaged 94% on the test. The class average on the test was 88%. Express the ration of k/q in simplest form.

*asked on February 25, 2013* -
## physics

How do you know that a sealed calorimeter is a closed system? because temperature is consurved because the masses of the sample and water are equal because thermal energy is not transferred to the environment because work is done on the test sample Please

*asked on April 11, 2012* -
## physics

A motorist drives along a straight road at a constant speed of 15.0 m/s. just as she passes a parked police officer,the officer starts to accelerate at 2.00 m/s^2 to overtake her. assuming the officer maintains this acceleration, a) determine the time it

*asked on January 17, 2011* -
## algebra

(7z^ m )(nz ^ 3 )=−14z^7

*asked on October 2, 2018* -
## Math

When Sarah takes the bus to work, the trip takes 30 minutes. When she takes the train to work, the trip takes 20 minutes. The average speed to the train is 15 mph faster than the speed of the bus. Find the distance to work.

*asked on May 9, 2013* -
## spanish

Oraciones Transforma los elementos en oraciones usando el subjuntivo o el indicativo. Modelo algunos animales/ ir a morir/ a menos que / haber / leyes para protegerlos Algunos animales van a morir a menos que haya leyes para protegerlos. la ciudad / ir a

*asked on July 3, 2012* -
## Definitions

People joined together in business. A. Proprietorship B. Ownership C. Partnership D. Investment I got C

*asked on September 1, 2014* -
## Computer Lit

Does this look good? It's about Piracy and my position. Computer Piracy What is piracy? Are there pirates running around on the Internet? Piracy is theft, you’re stealing copyrighted work. You’re not stealing if you buy a book, a song on iTunes, or a

*asked on June 4, 2015* -
## English

There's more then one answer What types of rhetorical devices are used in the following sentence? They would like more time off in the summer, for holidays, and on weekends. repetition anadiplosis parallelism repetition epistrophe repetition anaphora

*asked on July 24, 2018* -
## goemetry

The pentagons below are similar. The area of the smaller pentagon is 30m^2. What is the area of the larger pentagon in m^2? Small pentagon is 4m and the larger one is 10m

*asked on April 8, 2012* -
## Geometry

1. If line JK is perpendicular to line XY at its midpoint M, which statement is true? a) JX = KY b) JX = KX c) JM = KM d) JX = JY Is it c? 2. What information is needed to conclude that line EF is the bisector of ∠DEG? a) m∠DEF = m∠DEG b) m∠FEG =

*asked on December 2, 2017* -
## Physics

A 2.60-kg block is attached to a horizontal spring that has a spring constant of 160. N/m. At the instant when the displacement of the spring from its unstrained length is -0.115 m, what is the acceleration a of the object?

*asked on November 16, 2010* -
## chemistry

Determine the pH of a solution prepared from 1.0 L of a 0.10 M solution of Ba(OH)2 and excess Zn(OH)2 (s). The Ksp of Zn(OH)2 is 3×10^-15 and the Kf of Zn(OH)4^2- is 2×10^15.

*asked on April 1, 2019* -
## algebra

I NEED HELP!! The table shows the annual consumption of cheese people in the United States foor selected years in the nineteenth century. What cubic model best fits this data? Year Pounds Consumption 1915 4.156 1922 4.857 1946 7.16 1991 29.989

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

A 1.00 L flask is filled with 1.05 g of argon at 25 ∘C. A sample of ethane vapor is added to the same flask until the total pressure is 1.150 atm . a.)What is the partial pressure of argon, PAr, in the flask? b.)What is the partial pressure of ethane,

*asked on July 11, 2018* -
## Physics

A copper (shear modulus 4.2 x 1010 N/m2) cube, 0.324 m on a side, is subjected to two shearing forces, each of magnitude F = 6.93 x 10 5 N (see the drawing). Find the angle (in degrees), which is one measure of how the shape of the block has been altered

*asked on November 14, 2015* -
## physics

A 900kg car strikes a huge spring at a speed of 22m/s, compressing the spring 4.0m How long is the car in contact with the spring before it bounces off in the opposite direction? I found the spring constant to be 27225, which i know is right, but am having

*asked on July 29, 2014* -
## psuchology

Currently there are --- types of cognitive therapy in common practice. 2 4 6 cognitive therapy is rarely used today please help

*asked on April 16, 2012* -
## Chemistry

Consider a 0.80M solution of HCN. The Ka of HCN is 6.2x10-10. What are the major species in solution? Calculate the pH of this solution. ----------------------------------- Ok, so i took a break, came back, and finished the problem. I have an x value of

*asked on October 18, 2011* -
## english

The shed held a (motley) supply of gardening tools. choose the letter of the word or phrase that best matches the () word outdated decomposing varied (my choice) small please help small

*asked on April 13, 2012* -
## Chemistry

Would you expect PbCl2 to dissolve in dilute HNO3(aq)? Explain in terms of solubility (Ksp)/equilibrium?

*asked on April 1, 2012* -
## psychology

Which of the following best demonstrates the goal of congnitive therapy? I think therefore I am (maybe) A fool sees not the same tree that a wise man sees A musician must make music an artist must paint a poet must write if he is to be at peace with

*asked on April 13, 2012* -
## Definitions

A smaller group of people within a larger group A. Culture B. subculture C. Demography D. Population None of the definitions say anything like the question please help

*asked on September 1, 2014* -
## Calculus

find the area of the region inside the limacon r= 8 + 4sin(theta) HElp!! if you can show steps, i'd be greatful

*asked on June 2, 2014* -
## psychology

humanistic therapy acknowledge unconscious forces and --- as a source of personal difficulties environment negative thoughts genetics psychosis please help

*asked on April 16, 2012* -
## geometry

Can someone check my work please? What is the area of the figure below? 18 in² 30 in² 36 in² (my choice) 60 in² What is the area of the figure below? 31.5 m² 63 m² (my choice) 84 m² 126 m² What is the value of h? 9.6 units 26.7 units (my choice) 48

*asked on March 30, 2012* -
## writing

Can someone help me describe the peruasive appeal of Dr. Kings "I Have a Dream" speech, and refering persuasive devices and literary elements in the answer

*asked on April 8, 2012* -
## English

What is the tense of the underlined verb in the following sentence? "I will be studying his painting techniques this summer." present emphatic present perfect progressive future progressive present progressive under lined verb ( will be studying)

*asked on January 9, 2012* -
## Organic chemistry

Is m-nitroaniline soluble in water, 1.0M NaOH, 1.0M HCl?

*asked on January 24, 2010* -
## Math

The base of the skateboard ramp has an area of 2.3 m square meters the height of the ramp is 1.2 m find the volume of the rectangular prism? Can you help me Dr.Jane or Ms.Sue?!?

*asked on March 5, 2013* -
## english

Which sentence contains an adjective used as a modifier? A. There are two male puppies in the litter. B. Brian crunched on pretzels. C.The cats howled at 3:00 in the morning. D. Will you be at the park tomorrow?

*asked on July 16, 2018* -
## Chemistry

What is the molar solubility of Mg(OH)2 in a solution containing 0,10 M NH3 ? Ksp Mg(OH)2 = 1.2x10^-11 Kp NH3 = 1.8x10^-5

*asked on April 18, 2016* -
## Organic chemistry

is benzoic acid soluble in water, 1.0M NaOH, 1.0M HCl?

*asked on January 24, 2010* -
## algebra

The line l_1 passes through the points (3,-3) and (-5,2). The line is the graph of the equation Ax + By = C, where A, B, and C are integers with greatest common divisor 1, and A is positive. Find A + B+ C.

*asked on January 24, 2015* -
## Physics

A soldier is tasked with measuring the muzzle velocity of a new rifle. Knowing the principles of projectile motion, he decides to perform a simple experiment at the indoor firing range. The soldier hangs a target a distance of d = 101 m from the end of the

*asked on December 5, 2012* -
## chemistry

2. Ammonia is produced by the reaction of hydrogen and nitrogen. N2(g) + 3H2(g) à 2NH3(g) o a. How many moles of H2 are needed to react with 1.0 mol of N2? o b. How many moles of N2 reacted if 0.60 mol of NH3 is produced? o c. How many moles of NH3 are

*asked on December 5, 2018* -
## Physics

A 90 kg halfback runs north and is tackled by a 120 kg opponent running south at 4 m/s. The collision is perfectly inelastic. Just after the tackle, both players move at a velocity of 2 m/s north. Calculate the velocity of the 90 kg player just before the

*asked on February 6, 2010* -
## Physics

Many people mistakenly believe that the astronauts that orbit the Earth are "above gravity". Calculate g for space-shuttle territory, 206 kilometers above the Earth's surface. Earth's mass is 6e24 kg, and its radius is 6.38e6 m (6380 km). Your answer is

*asked on March 9, 2016* -
## AP Physics

Two speakers, one directly behind the other, are each generating a 406-Hz sound wave. What is the smallest separation distance between the speakers that will produce destructive interference at a listener standing in front of them? Take the speed of sound

*asked on March 8, 2016* -
## Physics

An egg is thrown nearly vertically upward from a point near the cornice of a tall building. It just misses the cornice on the way down and passes a point a distance 34.0 m below its starting point at a time 5.00 s after it leaves the thrower's hand. Air

*asked on September 9, 2017* -
## Chemistry

If 7.83 g FeCl3(s) is dissolved in enough water to make 2.50 L of solution, what is the concentration of Fe3+ in the solution?

*asked on October 9, 2009* -
## science

A hawk building its nest on an arm of a saguaro cactus is an example of

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

How many volleyball games would Rana have to schedule if there were 10 teams in the league and each team played each other twice?

*asked on November 9, 2016* -
## physics

A chair of mass 14.0kg is sitting on the horizontal floor; the floor is not frictionless. You push on the chair with a force F = 40.0N that is directed at an angle of 43.0∘ below the horizontal and the chair slides along the floor.

*asked on March 14, 2015* -
## english (notificatins)

an appeal to logic--(persuasive appeals) the emotions that a speaker demonstrates towards his or her subject--(pathos) an appeal to the credibilty of the speaker--(ethos) an appeal to a sense of right or wrong--(logos) devices in a speech that seek to

*asked on April 12, 2012* -
## Physics

Suppose you are provided with 500 dice.calculate the number of throws that is equivalent to one half life and the decay costant for the process.under radioactivity decay analogue experiment

*asked on May 19, 2017* -
## Math 10C

Janet needs a rectangular piece of cardboard measuring 21 ft by 24 ft for a school project. a) What is the area of the cardboard in square feet? b) What is the area of the cardboard in square yards? Show your calculations in two different ways. c) The

*asked on February 7, 2017* -
## Chemistry

Consider 2 separate solutions, one of a weak acid HA and one of HCL. Assume that you started with 10 molecules of each. Draw a picture of what each solution looks like at equilibrium. Ok to my very limited knowledge on this subject so far, a weak acid at

*asked on October 11, 2011* -
## physics

A 63-kg ice-skater glides with a speed of 10 m/s toward a 14-kg sled at rest on the ice. The ice-skater reaches the sled and holds on to it. The ice-skater and the sled then continue sliding in the same direction in which the ice-skater was originally

*asked on March 30, 2011* -
## LA check work

Hello could you check my work on these two questions? Question one: How do you form the perfect tense of a verb? A. use the helping verb will and the base form of the verb B. use a form of the verb have and the present particle of the verb C. use a form of

*asked on November 3, 2015* -
## Physics

A child rolls a ball on a level floor 3.4 m to another child. If the ball makes 9.0 revolutions, what is its diameter?

*asked on November 25, 2010* -
## physics

Two blocks with masses M1 = 8.0 kg and M2 = 5.4 kg are connected with a massless string over two massless and frictionless pulleys, as shown in the Figure. One end of the string is connected to M1 while the other end is fixed. What is the acceleration of

*asked on November 4, 2015* -
## Math

For a given right, side a = 76.4 feet and side b = 39.3, what is the measure of angle b to the nearest degree

*asked on August 16, 2014* -
## Science- Chemistry

Determine the type of bonding in each substance. a. Zinc, Zn (s) b. Propane, C3H8 (l) c. Calcium Carbonate, CaCO3 (s)

*asked on December 11, 2012* -
## Physics

A bicycle wheel of radius .7m is rolling without slipping on a horizontal surface with an angular speed of 2 rev/s when the cyclist begins to uniformly apply the brakes. The bicycle stops in 5 s. Through how many revolutions did the wheel turn during the 5

*asked on November 30, 2010* -
## Physics

A bicycle wheel of radius .7m is rolling without slipping on a horizontal surface with an angular speed of 2 rev/s when the cyclist begins to uniformly apply the brakes. The bicycle stops in 5 s. Through how many revolutions did the wheel turn during the 5

*asked on November 18, 2010* -
## Math

119.71153846 rounded to the nearest meter

*asked on March 5, 2019* -
## Root Words

Which of the following root words means “more than one”? A. Junct- B. Ambi- C. Ject- D. Terr- B?

*asked on September 3, 2014* -
## Physics

A bicycle wheel of radius .7m is rolling without slipping on a horizontal surface with an angular speed of 2 rev/s when the cyclist begins to uniformly apply the brakes. The bicycle stops in 5 s. Through how many revolutions did the wheel turn during the 5

*asked on December 1, 2010* -
## equation complex number

z^4 + 81 = 0 (solve) change it to polar, then take the root. z^4= 81@180 z= 3@180/4 + n90 where n=0, 1, 2, 3 check: z= 3@180/4 + 3*90=3@315 z^4=81@(4*315)=81@1260= 91@180=-81 you can check it at the other roots also. this is what i did: z^4 = - 81 z (81

*asked on November 3, 2006* -
## Physics

A tennis player hits a tennis ball (m = 0.0550 kg) with a force of 32.2 N over a time interval of 0.22 s. If the ball as a velocity of 42.2 m/s before being hit and 87.8 m/s after being hit, how much work did the tennis player do?

*asked on March 28, 2018* -
## pre-calculus

Assume that the number of bacteria follows an exponential growth model: P(t)=P0ekt . The count in the bacteria culture was 900 after 20 minutes and 1600 after 30 minutes. (a) What was the initial size of the culture? (b) Find the population after 80

*asked on November 7, 2016*