# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,330 questions, page 146-
## Astronomy

Suppose that you travel to a planet that has 4 times the Earth's mass and 4 times the Earth's radius. Calculate how much more or less you would weigh on this planet compared to your weight on Earth. Express your answer as a factor or fraction of your

*asked by Rebecca on October 1, 2011* -
## chemistry

using the values for heat of fusion, specific heat of water, or heat of vaporization, calculate the amount of heat energy. Calories needed to warm 20.0g of water at 15 degrees Celsius to 72 degrees Celsius (one step) Show work please

*asked by matt on October 3, 2010* -
## Math(Reiny Please Help)

An explosives company specializes in bringing down old buildings. The time it takes for a particular piece of flying debris to fall to the ground can be modelled by the function h(t)= -12(t+2)^2 + 120(t+2), where h is the height of the debris in metres and

*asked by Heaven on May 31, 2016* -
## Physics II

For an object which is 4.0 mm in height located 6.0 cm to the left of a converging lens (positive f) of focal length +9.0 cm, determine the image location and characterize it. Show your work here. No Calculator. Image is located ________________cm to the

*asked by Kendrick on May 1, 2017* -
## Math1

An explosives company specializes in bringing down old buildings. The time it takes for a particular piece of flying debris to fall to the ground can be modelled by the function h(t)= -12(t+2)^2 + 120(t+2), where h is the height of the debris in metres and

*asked by Heaven on May 30, 2016* -
## Algebra Help

Let x = log_2 1/8 Write the exponential form of the equation and solve the equation for x. Does this work? Thanks! Exponential form is 2^-3=1/8 To Check: 2^-3=1/2^3=1/8

*asked by Pamela on August 5, 2009* -
## Math, Algebra

So I've tried for two days to figure out this problem. I tried to ask my friend to help me but she just won't. My parents don't know anything about math, they said so themselves. The first day I tried I cried I got so frustrated. The second day I just gave

*asked by Help please and fast! on March 24, 2017* -
## Chemistry

A 10.0 mL aliquot of a flouride sample solution was diluted to 250 mL in a volumetric flask. The F- concentration of this DILUTED sample was determined with a F- ion selective electrode and found to be 7.1 mg/L. What is the concentration of F- in the

*asked by Ronnie on October 19, 2015* -
## Chem

Nitric acid can be prepared by bubbling dinitrogen pentoxide into water. N2O5(g) + H2O -> 2H+(aq) + 2NO3-(aq) a) How many moles of H+ are obtained when 1.50 L of N2O5 at 25 degrees C and 1.00 atm pressure is bubbled into water? b) The solution obtained in

*asked by Dave on January 1, 2007* -
## chemistry

A sample containing 0.0500mol of Fe2(SO4)3 is dissolved in enough water to make 1.00L of solution. This solution contains hydrated SO4 2- and Fe(H2O)6 3+ ions. The latter behaves as an acid: Fe(H2O)6 3+ --> Fe(H2O)5OH 2+ + H+ a) Calculate the expected

*asked by Chris on February 16, 2011* -
## Math- urgent

Harry buys American cheese at the deli. He buys 1/4 pound at the cost of x dollars per pound. If he pays $12.25 for 2.5 pounds of cheese, what is the cost per pound? Please show your work.

*asked by Sarah on April 27, 2014* -
## math

Daniel gave 4/5 of his stickers to Javier. Javier’s collection of stickers increased to 64. If Javier had 28 stickers in the beginning, how many stickers did Daniel have in the beinging? can u please show the work and explain how u got it...so i could

*asked by Katherine on March 31, 2011* -
## prob & stat

In a simple random sample of 90 patients who saw a certain dentist, 8 patients had their teeth whitened. What is the 95% confidence interval for the percent of all the dentist's patients who had their teeth whitened? show work (5.9, 11.9) (4.0, 13.8) (3.0,

*asked by sweet12 on May 18, 2015* -
## Math

At the dance, Lyndi and Josh danced 3/4 hour without stopping. This is 3/8 hour more rhan Kecia and Les danced. How long did Kecia and Les danced? Show your work..

*asked by Mike on February 6, 2013* -
## Calculus

Consider the curve y^2+xy+x^2=15. What is dy/dx? Find the two points on the curve where y equals 0 and show that the tangent lines there are parallel. Find the coordinates of all points on the curve where there is a horizontal tangent line, with work.

*asked by K.Jeanes on April 19, 2011* -
## math

A certain disease has an incidence rate of 0.8%. If the false negative rate is 7% and the false positive rate is 3%, compute the probability that a person who tests positive actually has the disease. Show all work.

*asked by un on April 29, 2017* -
## math

A band sold out a concert with 4200 seats. A random sample of 120 ticket buyers is surveyed and 28 buyers made their purchase on the first day the tickets went on sale. How many of the 4200 tickets are likely to have been sold on the first day they were

*asked by Ry on February 15, 2017* -
## precalculus

Find (a) the equation of a line that is parallel to the given line and includes the given point, and (b) the equation of a line that is perpendicular to the given line through the given point. Write both answers in slope-intercept form. (c) Graph both of

*asked by tinathomas on November 11, 2011* -
## chemistry help

1. Calculate the energy change (q) of the surroundings (water) using the enthalpy equation qwater = m × c × ΔT. We can assume that the specific heat capacity of water is 4.18 J / (g × °C) and the density of water is 1.00 g/mL. Show ALL your work. The

*asked by MadiB PLEASE HELP :( on April 7, 2013* -
## chemistry

The mass of a sample of boron atoms is 5.60 g. How many boron atoms are in this sample? Show your work here.

*asked by Savannah on December 19, 2012* -
## holy school

CaCO3 + H2 SO4 ------> CaSO4 + CO2 + H2 O 200 g of calcium carbonate are added to 4 L of water. a. What is the molarity of the calcium carbonate solution? b. How many moles of hydrogen sulfate would be needed to react with a 25 mL sample of the calcium

*asked by mamta on March 3, 2013* -
## Technology

please check these for me: 1. One of the possible drawbacks of technology is a. it increases productivity b. it never changes c. it doesn't improve out living conditions d. it can cause pollutions D 2. Choose the one statement which is true about

*asked by y912f on October 23, 2009* -
## Math

I have a few questions about T-Matrix. In excel, I am suppose to work with powered matrices to construct a weighted T matrix, using a scalar of .7. Does this mean I multiply each of the powered matrices by .7? Or do I power the powered matrices by .7? Or

*asked by Lisa on October 13, 2010* -
## physics math

the acceleration of a car is 2m/s^2 and another car has constant velocity of 35m/s.what time the first car overtake the car with constant velocity of the first car? draw and show solution

*asked by Hshdhdhdhdjdjdjdjjsjshsgshshs on December 10, 2012* -
## math

In an interbarangay basketball league the team from barangay Culiat has won 12 out of 25 games a winning percentage of 48% .We have seen that they need to win 8 games consecutively to raise their percentage to at least 60%. What will be their winning

*asked by Queen on July 18, 2016* -
## Math

In an interbarangay basketball league the team from barangay Culiat has won 12 out of 25 games a winning percentage of 48% .We have seen that they need to win 8 games consecutively to raise their percentage to at least 60%. What will be their winning

*asked by Queen on July 18, 2016* -
## Physics

A mass (0.5 kg) and spring (k = 250 N/m) system oscillates with an amplitude of 3.5 cm. a) What is the total mechanical energy of the system? b) What is the maximum speed of the mass? c) What is the maximum acceleration of the mass? I need help please! Do

*asked by Anonymous on December 2, 2016* -
## Chemistry

A gaseous reaction occurs at a constant pressure of 50.0 atm and releases 69.8 kJ of heat. Before the reaction, the volume of the system was 8.80 L . After the reaction, the volume of the system was 2.80 L . Calculate the total internal energy change,

*asked by Brittany on March 5, 2012* -
## Chemistry

An aqueous sodium salt (NaCnH2n+1O3) solution has an osmotic pressure of 2.041 atm when 1.068 g of the salt are dissolved in 200. g of water at 25 degrees C. Assuming molality and molarity in such a dilute solution are the same and that the sodium salt is

*asked by Ceamus Angelina on May 24, 2018* -
## banking and financial services management

The Hypothetical Finance Ltd has structured a hire-purchase deal. The required to make a down payment of 20 per cent of the investment cost. The hire-term is four years with quarterly payment in advance. The flat rate of interest is 13 per cent. The

*asked by kishor on April 15, 2012* -
## college-Financial Services(MBA)

The Hypothetical Finance Ltd has structured a hire-purchase deal. The required to make a down payment of 20 per cent of the investment cost. The hire-term is four years with quarterly payment in advance. The flat rate of interest is 13 per cent. The

*asked by Anonymous on April 17, 2010* -
## chemistry

a sucrose solution with a volume of B uL has a density of C g/ml. the solution is D % sucrose by mass. if i added x ml of this sucrose to another solution, how many grams sucrose did I add?a sucrose so

*asked by neece on January 24, 2012* -
## Chemistry

I cannot understand how the mass of the system has changed. There's no need for you to do my work please just explain it to me! :) thanks so much A scientist placed copper powder into a crucible and heated it until all of the copper reacted. The resulting

*asked by nicole on September 29, 2015* -
## Children's Literature

Asking your students to show you how the fox in "Hattie and the Fox" felt encourages which development? 1. personality 2. intellectual, 3. social and moral 4.aesthetic creative Wouldn't it encourage social and moral development in students? 2 or 3 would

*asked by Karin on February 6, 2007* -
## math

A group of hikers buys 8 bags of mixed nuts .Each contains 3 1/2 cups of nuts.The mixed nuts are shared evenly among 12 hikers.How many cups of mixes nuts each hiker receive?Show your work or explain your answer.

*asked by Anya dunglas on September 11, 2016* -
## chemistry

A gas has a volume of 590 mL At a temperature of -55.0 degrees celsius. What volume will the gas occupy at 30.0 degrees celsius? show your work. I'm just confused as to how to start this and the steps required. I'm not asking for an answer, but rather some

*asked by gina on March 8, 2018* -
## History

1:Which philosophers of the European Enlightenment influenced the founding documents of American government through their theory of a social contract? A:Michel de Montaigne and Denis Diderot B:Charles de Montesquieu and Mary Wollstonecraft C:Thomas Hobbes

*asked by anonymous on January 29, 2018* -
## physics

A light string of length of 56.0 cm connects two small square blocks, each with a mass of 1.50 kg. The system is placed on a slippery (frictionless) sheet of horizontal ice and spun so the two blocks rotate uniformly about their common center of mass,

*asked by Ricky on November 28, 2017* -
## PHYSICS

I AM SORRY I JUST HAVE ONE OF THE MOST HORRIBLE TEACHERS, AND I AM TEACHING MYSELF FOR I GET NOTHING IN CLASS. On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of 0.565m from the axis of rotation of the

*asked by Chiongo on October 22, 2014* -
## Research Methodology and Program Evaluation

Good morning, I wanted to see if someone could help me with the following questions because I am not too sure. Examining groups of people is considered an option in program evaluation. True False I selected false because there are different type of program

*asked by Lencho on July 9, 2017* -
## Research Methodology and Program Evaluation

Good morning, I wanted to see if someone could help me with the following questions because I am not too sure. Examining groups of people is considered an option in program evaluation. True False I selected false because there are different type of program

*asked by Lencho on July 9, 2017* -
## math

for every 8cds sold, there were 12 dvds sold. a combined total of 70 cds and dvds were sold. how many cds were sold that day? write a proportion to show the relationship and solve it to find the number so cds sold

*asked by dawn on January 25, 2009* -
## intermediate microeconomics

why is modelling useful, despite being a simplified version of reality? my answer: answer: an economic model attempts to describe every aspect of reality. a models power stems from the elimination of irrelevant detail which allows the economist to focus on

*asked by jenny on November 17, 2012* -
## systems word problems

the sum of two numbers is 11. their product is 30. find the numbers. answer 5,6 represent the unknown by variables using let statements, translate into equationsusing variables. combine hem using substitution or elimination. answer the question by

*asked by ed on March 1, 2010* -
## physics

A bullet with mass m and a velocity of v is shot perpendicular to the edge of a uniform rod with length L and mass 4m which is free to move and rotate on a frictionless horizontal surface. The bullet is lodged into the rod and move together after the

*asked by Anonymous on July 21, 2010* -
## Chemistry

10g of NOBr were added to a 5L flask and the temperature was fixed to 350K. The following equilibrium is reached : NOBr(g)=NO(g)+1/2Br2(g);The pressure measured at the equilibrium was 0.63 atm.Determine Kp and Kc. I need help to solve this problem.I

*asked by Gianna mele on September 19, 2016* -
## math 5th grade

Henry bought 1 liter of fruit juice. He kept 1/4 liter of it in a bottle & poured the remainder equally into 6 cups. How much fruit juice was there in each cup? Give the answer in liters? **Plz show me how to solve the problem and the answer would be great

*asked by litzy on April 11, 2011* -
## MATH-Stuck :-(

I really need help factoring these special Trinomials. This question really puzzled me. I thought I had it correct, but when I checked the answer at the back of the book, I was wrong, and so I would like to know what was it that I had done wrong. This was

*asked by Anonymous on November 8, 2010* -
## MATH-STUCK :-(

I really need help factoring these special Trinomials. This question really puzzled me. I thought I had it correct, but when I checked the answer at the back of the book, I was wrong, and so I would like to know what was it that I had done wrong. This was

*asked by Anonymous on November 8, 2010* -
## Chemistry

How to prepare 10% sucrose solution enriched with 0.1% phenylalanine? And also how to make the stock solution of phenylalanine for the above process. I have prepared 10% sucrose solution by adding 10g sucrose in 100ml water , but how do i make 0.1%

*asked by Chemistry on June 24, 2017* -
## physics

Consider two masses m1 and m2, connected by a spring of spring constant k and an uncompressed length L. The masses are on a frictionless surface. Initially, m2 compresses the spring to L/2 length. At t=0 the system is released. Find the position of the

*asked by Andres on October 28, 2014* -
## Chemistry;HELP

Use the 5-step method and be sure to include units where appropriate. Round your answers to the correct number of significant digits. Mass m Density = -------------- or D = ------- Volume v Adjust the density formula and solve the problems below: m D =

*asked by Victoria on January 16, 2013* -
## Physics SHM

Am self studying SHM, so sorry for the elementary questions. Would someone check/confirm some facts i think I've learned please. 1 If a sine wave graph starts at the origin at time = 0s, the sysyem is in equilibrium? 2 The amplitude at t= 0s is zero. 3

*asked by charlie on November 5, 2008* -
## Physics

The system shown in the figure is held initially at rest. Calculate the angular acceleration of the system as soon as it is released. You can treat MA (1 kg) and MB (12 kg) as point masses located on either end of the rod of mass MC (27 kg) and length L (9

*asked by James on June 20, 2012* -
## physics

Heather and Matthew walk eastward with a speed of 0.98 m/s. If it takes them 34 min to walk to the store, how far have they walked? If Joe rides south on his bicycle in a straight line for 15 min with an average speed of 12.5 km/h, how far has he ridden?

*asked by anonymous on September 20, 2006* -
## Calculus 2 (Series - Convergent or Divergent?)

Can someone show me a step by step process and explanation how to solve this problem? 1) Consider the following series. (∞ on top of summation symbol) (k = 1 under the summation symbol) ∑ k(k+15)/(k+13)^2 Determine whether the series is convergent or

*asked by Erin on March 29, 2015* -
## Chem

. Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide. A. What is the percent by mass of sulfur trioxide (SO3) if oleum is expressed as 3H2SO4 . 5SO3? Show your solution. B. Discuss at least three

*asked by John on November 17, 2012* -
## Science

A 0.21g sample of sulfuric acid is dissolved completely in sufficient water to make 0.25 litre of final solution. Calculate the hydrogen ion concentration in mol1-1 in this solution and show successive steps in the calculation: If 0.21g in 0.25l then 0.84g

*asked by Anthony on March 12, 2007* -
## math

Enter your answer and show all the steps that you use to solve this problem in the space provided. A party store offers small balloons and large balloons. You can choose from pink, blue, green, and yellow balloons. You can choose from silver, gold, and

*asked by niki on February 20, 2019* -
## Chemistry

An aqueous solution of ethanol is 14.1M C2H5OH. The density of the solution is 0.853g/mL. What is molality of ethanol in the solution? What is mass % of ethanol in solution? I got the molality which is -21.7 ethanol, but I can't figure out how to get the

*asked by Robert on January 14, 2013* -
## Math

So the questions was-->Factor the following algebraic equation and describe the process by which it is done: x²+ 3x – 10 = ? I solved the questions correctly but my teacher said I need to show it algebraically not arithmetically. & she said that I need

*asked by Jenny on May 8, 2013* -
## Alegabra 1

26 ÷ 23 Sarah is trying to solve the above expression. She takes the following steps: 1. Sarah checks to see that both numbers have the same base. Since they both have the same base, she decides to work with the exponents. 26 ÷ 23 2. Sarah now adds 6 and

*asked by morgan miner on February 6, 2012* -
## Math

Genny babysits for two different families. One family paints her $6 an hour and a bonus of $20 at the end of the night. The other family pays her $3 every half hour and a bonus of $25 at the end of the night. Write and solve the system of equations that

*asked by May on April 14, 2016* -
## pre-calc

The city planners of bakersfield, CA are studying the current and future needs of the city. The sewage system they have in place now can support 300,000 residents. The current population of the city is 180,000, up from 122,000 eight years ago. Assuming

*asked by maddy on January 8, 2010* -
## Physics

A 15 kg uniform disk of radius R = 0.25 m has a string wrapped around it, and a m = 3.3 kg weight is hanging on the string. The system of the weight and disk is released from rest. When the 3.3 kg weight is moving with a speed of 2.1 m/s, what is the

*asked by Emma on March 12, 2012* -
## government

the debate over the powers of the presidency is essentially a debate a. about article III of the constitution b. between supporters of a strong presidency and supporters of a weak presidency c. about the system of checks and balances d. about the electoral

*asked by jere on January 17, 2008* -
## Math

150 men live in a certain town: 85 are married 70 have a cell phone 75 own a car 55 are married and have a cell phone 35 have a cellphone and a car 40 are married and have car 30 are married, have a car and have a cellphone. How many men are single and do

*asked by Nia on October 31, 2014* -
## Material balance

A dilute salt solution containing 6% salt is fed to an evaporator at rate of 10000 kg/h for a trail run. crystals formed along with the saturated solution adhering with them are sent to a centrifuge for the recovery of the solution. 60% of the adhering

*asked by Patel bhavya on December 11, 2016* -
## Technical Math (College)

Question: The formula s=4.90t^2 gives the distance s in meters that a body falls in a given time t. Find the distance a ball drops in 4.2 seconds. Use the rules for multiplication of measurements in evaluating the answer.

*asked by Shelly on January 20, 2016* -
## College Alegebra

I know I have to take the log of both sides, but I don't seem to get how they work out! Can anyone explain how to do 3e^(1+x) = 2 AND 10^(2x+3) = 280 If you walk me through one I should be able to figure out the other. Hopefully... I think you need to go

*asked by Lost in Logarithms on April 1, 2007* -
## Algebra

There are two solutions to | 16x - 5 | = 3. The greatest solution is ___. Since the expression, 16x - 5, can be either positive or negative, solve for both. 16x - 5 = 3 16x = 8 x = .5 -(16x - 5) = 3 -16x + 5 = 3 -16x = -2 x = 1/8 You can decide which is

*asked by Juri on July 23, 2007* -
## algebra

How many liters of a 20% solution of acid should be added to 10 liters of a 30% solution of acid to obtain a 25% solution? Equation: Answer:

*asked by Anonymous on July 21, 2008* -
## chemistry

The neutralization of 27.3 mL of an unknown concentration H2SO4 solution requires 72.2 mL of 0.12 M LiOH solution. What is the concentration of the H2SO4 solution (in M)?

*asked by kyle J on September 30, 2013* -
## general chemistry II

Phosphoric Acid is usually obtained at an 85% phosphoric acid solution, by mass. If this solution is 15 M, what is the density of the solution? What is its MOLALITY?

*asked by JL on January 29, 2014* -
## analytical chem

10.00mL of 0.100mol/L HCl solution is add to 10.00mL of 0.100mol/L NaOH solution. what is the pH of the resulting solution?

*asked by deg on April 22, 2014* -
## Chemistry

You use 11 ml of a 1M H2SO4 solution to titrate 6ml of ammonium hydroxide solution. What was the concentration of the ammonium hydroxide solution?

*asked by Eddie on December 3, 2010* -
## Chemistry

Consider a solution that contains both C6H5NH2 and C6H5NH3+. Calculate the ratio [C6H5NH2]/[C6H5NH3+] if the solution has the following pH values. (Assume that the solution is at 25°C.) (a) pH = 4.70 (b) pH = 5.26 (c) pH = 5.42 (d) pH = 4.96

*asked by Margaret on March 13, 2013* -
## chemistry

The neutralization of 27.3 mL of an unknown concentration H2SO4 solution requires 72.2 mL of 0.12 M LiOH solution. What is the concentration of the H2SO4 solution (in M)?

*asked by kyle J on September 30, 2013* -
## MATH

How many liters of water should be evaporated from 110 liters of a 12% saline solution so that the solution that remains is a 20% saline solution

*asked by marc on September 11, 2014* -
## college math

How many liters of water should be evaporated from 110 liters of a 12% saline solution so that the solution that remains is a 20% saline solution

*asked by Anonymous on September 11, 2014* -
## math

How many liters of water should be evaporated from 110 liters of a 12% saline solution so that the solution that remains is a 20% saline solution?

*asked by Alana on September 11, 2014* -
## Chemistry

The titration of 25.0 mL of an unknown concentration H2SO4 solution requires 83.6 mL of 0.12 M LiOH solution. What is the concentration of the H2SO4 solution (in M)?

*asked by Emma on December 6, 2012* -
## chemistry

The neutralization of 27.3 mL of an unknown concentration H2SO4 solution requires 72.2 mL of 0.12 M LiOH solution. What is the concentration of the H2SO4 solution (in M)?

*asked by kyle J on September 30, 2013* -
## chemistry

Calculate the pH of 0.3 M HCl solution. Calculate the pH when 100 mL of a 0.5 M solution of NaOH are added to 300 mL of the HCl solution.

*asked by Anonymous on July 2, 2016* -
## math

How many liters of water should be evaporated from 110 liters of a 12% saline solution so that the solution that remains is a 20% saline solution

*asked by nate on September 11, 2014* -
## Math

How many cc of a 20% solution of a sulfuric acid must be mixed with 100 coffee a 50% solution to make a 25% solution of sulfuric acid

*asked by Aqnonymous on January 17, 2017* -
## Science

The problem I'm trying to answer is: Ann is driving down a street at 59 km/h. Suddenly a child runs into the street. If it takes Ann 0.719 s to react and apply the brakes, how far will she have moved before she begins to slow down? Answer in units of m. I

*asked by Becca on September 30, 2011* -
## Math Help Please

Please show me how to put this in interval notation. Thanks! I know I solved this right, I think, but need to put it in interval notatioin. Please tell me if i am correct. Thanks! PleaseSolve: (x-3)/(x^2-25)

*asked by Michelle on August 2, 2009* -
## algebra

In an experiment, the population P of bacteria is given by P=1000e^kt,where k is constant.If the size of population bacteria is found to be 3000 after 10 hours, what is the size of the population after 5 hours?Show me the solution please.

*asked by julie on October 10, 2016* -
## geometry

I am not a student, I am a parent trying to help my son. I understand why you do not want to solve the questions, but can you please help me set them up correctly so I can try? h = -16t(exponent 2) + 60t where t is the time in seconds. A) Factor the

*asked by KP1 on October 5, 2016* -
## chemistry

What is the concentration of the Mg2 ion in solution when [CO3-2] = 0.25M given that the Ksp= 6.82 x 10-6 for the following reaction MgCO3-------->Mg +. CO32- Chemistry - DrBob222, Friday, November 11, 2011 at 5:34pm Ksp = (Mg^2+)(CO3^2-) Substitute 0.25M

*asked by Monique on November 12, 2011* -
## Chemistry

A 8.71 g sample of an aqueous solution of hydroiodic acid contains an unknown amount of the acid. If 25.0 mL of 0.388 M barium hydroxide are required to neutralize the hydroiodic acid, what is the percent by weight of hydroiodic acid in the mixture? I

*asked by Hannah on November 20, 2011* -
## Math, rational inequalities

Please can someone help me solve this problem? 2/x + 6/x-1 less than or = -5 8/x -1 = -4x Divide both sides by 4 2 >= -x Multiply both sides by -1 -2

*asked by agirl on November 26, 2006* -
## Chemistry

In which solution (acidic, basic, neutral water, or doesn't matter) is sodium acetate most soluble? acidic solution Basic solution neutral doesn't matter I already tried basic solution and got it wrong.

*asked by Meg on October 10, 2010* -
## Math(Calculus)

Ok I have a bunch of questions, please bare with me and i'd appreciate it VERY much if you could help me with these! 1. Assume that you are given the equations of three planes. Without solving the system, describe a "test" with rationale, that you could

*asked by rick on August 11, 2010* -
## chemistry

Hydrochloric acid solution reacts with zinc according to the following equation: 2H3O + Zn -> Zn^2+ + H2 +2H2O 100ml of hydrochloric acid solution Ca=0.5mol/l must be prepared from C=5mol/l hydrochloric solution. 1) Specify the glassware needed for this

*asked by angy on December 11, 2016* -
## Physics

A block with mass M = 5.00 kg rests on a frictionless table and is attached by a horizontal spring (k = 130 N/m) to a wall. A second block, of mass m = 1.25 kg rests on top of M. The blocks are displaced by 10 cm then released. If the coefficient of static

*asked by Sue on May 27, 2014* -
## trig

A pole is braced by two wires that extended from the top of the pole to the ground. The lengths of the wires are 16 feet and 18 feet and the measure of the angle between the wires is 110 degrees. Find, to the nearest foot, the distance between the points

*asked by Anonymous on April 21, 2013* -
## physics

A 0.4 kg mass attached to a spring is pulled back horizontally across a table so that the potential energy of the system is increased from zero to 200 J. Ignoring friction, what is the kinetic energy of the system after the mass is released and has moved

*asked by Anonymous on November 7, 2011* -
## physicis

a 0.30 kg mass attached to a spring is pulled back horizontally across a table so that the potential energy of the system is increased from zero to 120 J. Ignoring friction what is the kinetic energy of the system after the mass is released and has moved

*asked by Laura on February 15, 2013*

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