Sunday

March 29, 2015

March 29, 2015

Total # Posts: 2,912

**Math**

Can you please help me with this one!! Solve by elimination, 3x+6y=6, 2x-3y=9
*May 1, 2014*

**Math**

Solve by elimination: 5x+7y=77 , 5x+3y=53 can you please help me out step by step so I can understand it on my own, thanks.
*May 1, 2014*

**Physical Science**

Which of these cannot increase the strength of an electromagnet? a. making the loops smaller in the coil b. placing an iron bar in the coil c. winding more loops in the coil d. increasing the current in the coil
*April 29, 2014*

**Chemistry**

A reaction : A(aq)+B(aq) --> C(aq) has a standard free-energy change of –4.01 kJ/mol at 25 °C. What are the concentrations of A, B, and C at equilibrium if, at the beginning of the reaction, their concentrations are 0.30 M, 0.40 M, and 0 M, respectively? I used ...
*April 28, 2014*

**chemistry**

estimate the mass of BaSO4 that will be produced when a 100ml of a 2M solution of Ba(NO3)2 in water is added toa 100ml of a 2M solution of NaSO4 in water
*April 27, 2014*

**physics**

a certain hamornic motion has amplitude of 0.7m and a period of 1.3s.find(a)the frequency of oscillation(b)the maximum velocity(c)the maximum acceleration
*April 23, 2014*

**Physics 1**

A cart with mass 340 g moving on a frictionless linear air track at an initial speed of 1.5 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. After the collision, the first cart continues in its original direction at 0.42 m/s. (a) What is ...
*April 22, 2014*

**Econ **

The process that produces Sonora Bars (a type of candy) is intended to produce bars with a mean weight of 55 gm. The process standard deviation is known to be 0.77 gm. A random sample of 49 candy bars yields a mean weight of 55.82 gm. Find the test statistic to see whether the...
*April 22, 2014*

**Physics**

A police car stopped at a set of lights has a speeder pass it at 100 km/h. If the police car can accelerate at 3.6 m/s2, a) how long does it take to catch the speeder? b) how far would the police car have to go before it catches the speeder? c) what would its speed be when it ...
*April 21, 2014*

**Algebra 1**

4 pencils and 5 pens cost $2.00; 3 pencils and 4 pens cost $1.58. Write out a system of equations that would represent this situation.
*April 18, 2014*

**English**

Which description would not apply to a typical metropolis ? A. Bustling B. Crowded C. Large d. Rustic I think it's is A
*April 16, 2014*

**English**

Ok I will do that now so I am thinking it A
*April 16, 2014*

**English**

A word closely associated with altercation is ? A. revision B. Adherent C. Sensible D. Argument I think it is letter B is that right ? Please answer me
*April 16, 2014*

**English**

I meant its A
*April 16, 2014*

**English**

An invincible team is one that has never know ? A. The joy of victory B. The agony of defeat C. The fear of flying D. Injury or illness I am thinking it could be letter D
*April 16, 2014*

**english/vocabulary **

Look back at "failing infrastructure" write a letter to your state representative describing an infrastructure problem in your community and urging swift action. thoroughly describe the problem and it's solution, explaining why it is vital to take action ...
*April 15, 2014*

**english/vocabulary**

ok thank you so much for you help i real appreciate it
*April 15, 2014*

**english/vocabulary **

can you please help me on word study with writing with idioms ? 1. sick as a dog 2. the best of both worlds 3. under the weather 4. nest eggs 5. when pigs fly 6. slip through the cracks 7. go to seed 8 . thorn in your side 9. turn over a new leaf 10. fifth wheel 11. pitch in ...
*April 15, 2014*

**MATH**

THANK YOU FOR HELP ME SO MUCH ON MY HOMEWORK I REAL appreciate it
*April 15, 2014*

**math**

you were right i thought so that's why i wrote to you .
*April 15, 2014*

**math**

how can you solve this problem ? here X=Y plz help me fast
*April 15, 2014*

**physics**

A thin, uniform rod is hinged at its midpoint. To begin with, one-half of the rod is bent upward and is perpendicular to the other half. This bent object is rotating at an angular velocity of 7.1 rad/s about an axis that is perpendicular to the left end of the rod and parallel...
*April 8, 2014*

**Physical Science**

13. Why can convex mirrors only produce virtual images? Sadly, I can't find this answer in my book. :( Any help would be appreciated, please and thank you!
*April 6, 2014*

**Math help**

A catapult launches a boulder with an upwark velocity pf 184 feet per second. the heigh of the boulder in feet after t seconds is given by the function h(t)=-16t^2+184t+20. how long does it take the boulder to reach its maximum height? What is the boulders maximum height? ...
*April 2, 2014*

**Word problem**

Mrs sue or Damon am I correct?
*April 2, 2014*

**Word problem**

. A catapult launches a boulder with an upwark velocity pf 184 feet per second. the heigh of the boulder in feet after t seconds is given by the function h(t)=-16t^2+184t+20. how long does it take the boulder to reach its maximum height? What is the boulders maximum height? ...
*April 2, 2014*

**Equations**

How many real number solutions does the equation have y=3x^2+18x+27 none one two infinite
*April 2, 2014*

**Equation help 2 questions**

Mrs sue can you help me with question 2?
*April 2, 2014*

**Equation help 2 questions**

is number 1 none?
*April 2, 2014*

**Equation help 2 questions**

How many real number solutions does the equation have y=-4x^2+7x-8 none one two infinite How many real number solutions does the equation have y=3x^2+18x+27 none one two infinite Thank you!
*April 2, 2014*

**Equation help**

can someone help?
*April 2, 2014*

**Equation help**

A physics student stands at the top of a hill that has an elevation of 56 meters. he throws a rock and it goes up into the air and then falls back past him and lands on the ground below. The path of the rock can be modeled by the equation y=0.04x^2+1.3x+56 where x is the ...
*April 2, 2014*

**UCF**

What will be the change in enthalpy when 100.0 g of butane, C4H10, is burned in oxygen as shown in the thermochemical equation below? 2 C4H10(l) + 13 O2(g) → 8 CO2(g) + 10 H2O(g) ΔH = −5271 kJ −2636 kJ −4534 kJ −9087 kJ −1.817 × ...
*April 2, 2014*

**trig**

a hot air balloon climbs continuously along a 30° angle to a height of 5,000 feet. To the nearest tenth of a foot, how far has the balloon traveled to reach 5,000 feet? Draw a sketch and then solve.
*April 1, 2014*

**Geometry**

I need help!!! a hemispherical bowl with radius 25cm contains water whose depth is 10cm. what is the water's surface area
*March 31, 2014*

**US history**

Would question 4 be B instead?
*March 30, 2014*

**US history**

True False The divorce rate in America declined in the 1920s. false right? All of the following were anti-modern reactions except A.fundamentalism B. Ku Klux Klan C. cultural anthropology D. arts and crafts movement E. prohibition F. None of the above Is it D? Fundamentalists ...
*March 30, 2014*

**Math 110**

I don't understand how you got 2016. I understand how you added to get the 1,9, 11, and 6. But I do not understand where you got the 1->2, 9->0, and 11->1.
*March 30, 2014*

**DATABASE.PLEASE!!**

CAN ANYONE DIRECT ME HOW TO EXTRACT A BUSINESS RULE AND RELATIONSHIP FROM THIS PARAGRAPH.? *I KNOW ITS MANY TO MANY RELATIONSHIP. BUT I STILL HAVE PROBLEM TO COMPLETELY BREAK THE RELATIONSHIP DOWN TO ONE TO MANY. PARAGRAPH: Students will also be required to sit for many tests...
*March 30, 2014*

**Geometry**

I need help in this problem: A 14-foot ladder is leaning against a house so that its top touches the top of the wall. the bottom of the ladder is 8 feet away from the wall. which of these can be used to find the height of the wall? A. in a right triangle with 14-foot leg and ...
*March 27, 2014*

**Chemistry**

The measured potential of the following cell was 0.1776 volts: Pb|Pb2+(??M)||Pb2+(1.0M)|Pb Calculate the electrode potential of the unknown half-cell(anode). Not sure how to approach this, considering the molarity is unknown. There isn't a lot of space on the page for the ...
*March 27, 2014*

**Equation help**

Anyone?
*March 27, 2014*

**Equation help**

X^2-6x+7=0 1.-1.59,4.41 2.-1.59,-4.41 3.1.59,-4.41 4.1.59,4.41 Can someone help?
*March 27, 2014*

**Equations Help**

is this the answers for both of them?
*March 26, 2014*

**Equations Help**

ok I get that one
*March 26, 2014*

**Equations Help**

how many real number solutions are there to the equation y=5x^2+2x-12 how many real number solutions are there to the equation y=3x^2+18x+27 Can somebody tell me how to get the solutions?
*March 26, 2014*

**Algebra**

The length of a rectangle is 5 meters more than its width. The perimeter is 66 meters. Find the length and the width of the rectangle
*March 25, 2014*

**Trigonometry**

rewrite tan(sin^-14v) as an algebraic expression in v
*March 25, 2014*

**Physics**

A 5.1- kg concrete block rests on a level table. A 3.4- kg mass is attached to the block by a string passing over a light, frictionless pulley. If the acceleration of the block is measured to be 1.3 m/s2, what is the coefficient of friction between the block and the table? ...
*March 24, 2014*

**trigonometry**

how far from an 84 foot burning building should the base of the fire truck ladder be placed to reach the top of the building at an angle of 60 degrees with the ground. the ladder is mounted to the truck 8 ft off the ground
*March 23, 2014*

**Science**

In your own words, describe the mathematical process of converting from one metric unit of length to another.
*March 20, 2014*

**math**

an instructor makes $15 more per hour than an assistant. If the combined hourly wage of the instructor and assistant is $65 , what is the hourly wage of the assistant?
*March 20, 2014*

**math**

an instructor makes $15 more per hour than an assistant is $65 what is the hourly wage of the assistant ?
*March 20, 2014*

**algebra 1**

At Jack's Laundromat, 6 of the washers must be replaced. These washers represent of the total number of washers. If w represents the total number of washers, which equation could be used to determine the value of w?
*March 20, 2014*

**Criminal investigation**

thank you
*March 20, 2014*

**Criminal investigation**

I read an article on an informant killed by a gang leader. What motivates informants to do a job like that? Thanks
*March 20, 2014*

**Criminal investigation**

thank you damon
*March 19, 2014*

**Criminal investigation**

can somebody please help
*March 19, 2014*

**Criminal investigation**

If you had information about a crime, would you be an official informant for the authorities? What would your concerns be? I don't think you would be a official informant, but im not sure what by concerns would be. Can somebody help?
*March 19, 2014*

**Physical Science**

When mixing colors of light, why does combining a secondary color with its complementary color give white light? I can't find the answer in my book, please help!
*March 19, 2014*

**chemistry**

In the following reaction, how many liters of oxygen produce 560 liters of carbon dioxide in the oxidation of methane, given that both gases are at STP? CH4 + 2O2 ¨ CO2 + 2H2O
*March 18, 2014*

**Accounting - need guidance **

On January 1, 2012, Bartell Company sold its idle plant facility to Cooper Inc. for $1,050000. On this date, the plant had a depreciated cost of $735,000. Cooper paid $150,000 cash on January 1, 2012, and signed a $900,000 note bearing interest at 10%. The note was payable in ...
*March 18, 2014*

**accounting-fory**

On January 1, 2012, Bartell Company sold its idle plant facility to Cooper Inc. for $1,050000. On this date, the plant had a depreciated cost of $735,000. Cooper paid $150,000 cash on January 1, 2012, and signed a $900,000 note bearing interest at 10%. The note was payable in ...
*March 17, 2014*

**algebra 1**

Eight times the sum of 11 and a number is 123. Which equation below can be used to find the unknown number?
*March 17, 2014*

**algebra 1**

The sum of two consecutive even integers is -34 . What is the smaller integer?
*March 17, 2014*

**algebra 1**

The sum of three consecutive integers is -204 . What is the largest integer?
*March 17, 2014*

**Math**

Find the product. Write the product in simples form. 2/3 x 8 = 2/3 x 8/1
*March 17, 2014*

**Science**

I am doing this same test but I think number one is b
*March 13, 2014*

**Science**

Is this correct. True or False. You can produce lower pressure by decreasing the area a force acts on. I think it is true.
*March 12, 2014*

**Physical Science**

22. Why does a heat pump need an external source of energy (such as electrical energy)?
*March 8, 2014*

**Polymonial help**

I'm not sure how to get the answers above me
*March 6, 2014*

**Polymonial help**

These are the answer choices y,y+6, and y-1 y,y-6, and y-1 y,y+6, and y+1 y,y-6, and y+1
*March 6, 2014*

**Polymonial help**

A dollhouse has a volume given by the trinomial y^3 - 5y^2 - 6y. What are possible dimensions of the box? I've been having trouble with this question all day. Can somebody help me?
*March 6, 2014*

**writing**

A. The tone of his paper was not original. B. He had too many grammatical errors. C. The overall ideas in his essay were not fully developed. D. The flow of his essay was inconsistent. I chose C, what do you think?
*March 6, 2014*

**Algebra 1**

37. Graph the line y = 4x + 2. Give the equations of three other lines that together with the line y = 4x + 2 would form a rectangle. Graph your rectangle. This is the last question that I have for this homework assignment, and I'm completely confused. Please help!
*March 5, 2014*

**english 3b**

How do Realists and Romanticists differ?
*March 4, 2014*

**Chemistry**

1.If the atmosphere can support a column of mercury 762 mm high at sea level, what height of water could be supported? The density of water is approximately 114 that of mercury.Answer in units of mm 2.If the atmosphere can support a column of mercury 762 mm high at sea level, ...
*March 2, 2014*

**history**

Progressives concerned with social justice called for (circle three) A. an end to slavery B. regulation of work hours for women C. prohibition D. equal pay for equal work (for women) E. supralapsarianism F. stricter building codes and factory inspections I would say B,C, & F, ...
*March 2, 2014*

**history**

4, southerners were referred to as Bourbons
*March 2, 2014*

**history**

The term Bourbon A.celebrated the French origin of many of the New South leaders B.derived from the French Bourbons who, according to Napoleon, forgot nothing and learned nothing through the ordeal of the French Revolution C.reflected the fact that some Southern political ...
*March 2, 2014*

**Algebra 1**

The value of a certain new car (time = 0 years old) is $14,000. After two years (t=2), the value of the car is $9,000. A. Find the linear equation representing the car after t years. B. What is the value of the car after 5 years?
*March 1, 2014*

**Current World History**

1. Why has there been weeks of protesting in Kiev, Ukraine? 2. What happened with the president of Ukraine, and why? Please and thank you in advance for any help given!
*February 28, 2014*

**English Grade 11**

Explain how the meaning of each of the following words is related to the root work -litera- mean "letter." 1. literate (adj.) 2. literature
*February 26, 2014*

**English Grade 11**

What is the literary term for an event that is different from what the readers or the characters will expect to happen? A. situational irony B. ambiguity C. verbal irony D. contradiction Working on my workbook pages for this week and I don't understand this one: please ...
*February 24, 2014*

**Algebra 1**

Find three solutions of each equation. 4x + 3y = 14 and 6x - 5y = 23
*February 24, 2014*

**statistics**

4n /8.8
*February 22, 2014*

**Physics**

A small rocket weighs 14.7 newtons. The rocket is fired from a high platform but it's engine fails to burn properly. The rocket gains total upward force if only 10.2 newtons. At what rate and in what direction is the rocket accelerated?
*February 19, 2014*

**Algebra 1**

What is point slope form? How is it different than slope intercept form? Which one is better?
*February 18, 2014*

**Physical Science**

In what direction does heat flow? Why do particles of matter transfer thermal energy in this direction?
*February 17, 2014*

**Chemistry 106 ch 11**

Calculate the heat released when 73.5 g of steam at 122.0 C is converted to water at 39.0C. Assume that the specific heat of water is 4.184 J/g C, the specific heat of steam is 1.99 J/g C, and change in heat vap =40.79 kJ/mol for water.
*February 15, 2014*

**Math help polynomial**

multiply the following polynomial -3x(y^2+2y^2) answer choices 3xy^2-6xy^2' -3xy^2-gxy^2 -3xy^2+5y^2 -9xy^2 The last one was the answer. Can you tell me how the answer was solved? Thanks!
*February 15, 2014*

**Algebra 1**

How do you write the equation of a line if you have two points? Please use detail and give step by step instructions: trying to study for a test and I don't understand this concept.
*February 13, 2014*

**Physics**

If a salmon swims straight upward in the water fast enough to break through the surface at a speed of 5 meters per second, how high can it jump above water?
*February 9, 2014*

**Science**

Help, I am not sure I am doing this right. Are these correct? 1. What is the acceleration of a 1,500-kg elevator with a net force of 10,500 N? 2. What net force is needed to accelerate a 60-kg cart at 12 m/s 2? I think it is 720N
*February 7, 2014*

**Science**

The action and reaction forces in any situation will always be ----- and ----.
*February 6, 2014*

**bio -energy **

in what chemical form is glucose when it enters the Krebs Cycle?
*February 5, 2014*

**Biology**

a variable whose variation does not depend on that of another.
*February 5, 2014*

**US History**

Do you think the U.S. should have joined the League of Nations with no restrictions to its obligations under Article X? Why or why not? I think I can answer the question; I just need help from someone who can explain what they're asking here? Please and thank you.
*February 4, 2014*

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