adding (1/4x^2-1/6x-3/8)+(1/4x^2-1/4x-1/2)

2,166 results
  1. Chemistry

    A dry mixture of kno3 and sand could be separated by 1. adding water to the mixture and filtering 2. adding water to the mixture and evaporating 3. heating the mixture to a high temperature 4. cooling the mixture to a low temperature

  2. chemistry

    Solubility (g/100gH2O) Substance 20∘C 50∘C KCl 34.0 42.6 NaNO3 88.0 114.0 C12H22O11 (sugar) 203.9 260.4 Using the above table, determine whether each of the following solutions will be saturated or unsaturated at 50 ∘C. 1.) Adding 19.7 g KCl to 35.0

  3. History

    Which accurately describes the role of British corporations in the New World and their effect on colonists’ opinions of England’s monarchy? colonist were forced to purchase their goods only from British corporations, adding a colonial animosity toward

  4. chemistry

    A solution of sodium bicarbonate is prepared by adding 45.00g of sodium bicarbonate to a 1.00-L volumetric flask and adding distilled water until it reaches the 1.00-L mark. Calculate the concentration of sodium in units of: a) milligrams per liter b)

  5. Math

    Plz help me in the Lesson 12: Adding and Subtracting Fractions Unit Test CE 2015 27.0210001 Math 6 A Unit 4: Adding and Subtracting Fractions plz

  6. ENGLISH

    6. The most common rule for forming plural nouns is A. adding -es to the word. B. changing the y to i and adding -es. C. dropping the last letter and adding -ies. D. adding -s to the word.

  7. math

    How is adding and subtracting mixed numbers similar to adding and subtracting fractions? How is adding and subtracting mixed numbers different than adding and subtracting fractions? Give examples to explain your answer.

  8. APChem

    Is this true or false?:A buffer can be destroyed by adding too much strong acid. I thought that a buffer can be destroyed by adding too much weak acid, but I'm not sure...

  9. grammar

    2. The patient was brought to the operating room, general endotracheal anesthesia was induced by the anesthesia service. which of the following is true for the above sentence a. This is a comma splice that can be fixed by removing the comma. b. This is a

  10. chem

    Consider the following chemical equilibrium: SO3(g) --> SO2(g) + 1/2 O2(g) and Delta H = 98.9J i. adding oxygen gas ii. compressing the system at constant temperature iii. adding argon gas iv. removing sulfur dioxide gas v. decreasing the temperature Which

  11. Chemistry help please!

    Why does a clear, saturated solution of PbI2 form a yellow precipitate when a small amount of KI is added to the solution? A. KI is insoluble in PbI2. B. PbI2 is always insoluble in water. C. Adding KI is like adding I-, which drives the reaction toward

  12. ALGEBRA

    Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to adding polynomial expressions? How is it different? Provide a radical expression for your classmates to simplify.

  13. Math

    Justine has 162 red buttons, 98 blue buttons, and 284 buttons. She says she knows she has more than 500 buttons without adding. How can we explain that without adding?

  14. Chemistry

    Calculate the molarity of a solution made by adding 28.2 mL of concentrated ammonia (28.0 % by mass, density 0.880 g/mL) to some water in a volumetric flask, then adding water to the mark to make exactly 500 mL of solution. (It is important to add

  15. College Chemistry

    Which of the following changes generally lead to greater reaction rates? (I)Increasing the temperature (II)Decreasing the concentration of a reactant or (III) adding a catalyst I know that change in temperature influences the reaction, in this case it

  16. English

    Which responses explain how affixes change the world guise to another part of speech? (Select all that apply.) A. Adding the prefix dis- and the suffix -ly creates the adverb disguisedly. B. Adding the prefix dis- and the suffix -ment creates the adjective

  17. Algebra

    Please help to find x, y 1. 8x-y=17 6x+y=11 2. 5x-2y=17 2x+3y=3 Question no.1 8x-y=17 6x+y=11 (adding the equation) __________ (-y and +y will be 0) 14x =28 Taking variables to one side x=28 __ 14 14*2=28 therefore x=2 substitute this value of x in

  18. Social studies

    How do economists calculate gross domestic product (GDP)? 1 point A - By adding up all the taxes collected by federal and state governments during one year B- By adding up all of the products consumed within a nation during one year C- By adding up all the

  19. Grammar

    The patient was brought to the operating room, general endotracheal anesthesia was induced by the anesthesia seervice. 1. This is a comma splice that can be fixed by removing the comma. 2. This is a comma splice that can be fixed by adding the conjunction

  20. gammar

    Seeing pulsation of the artery at the completion of this dissection. 1. This is a run-on that can be fixed with a period. 2. This is a run-on that can be fixed by adding a comma and a conjunction. 3. This is a fragment that can be fixed by adding a subject

  21. Aditya

    Br2(l)+Cl2(g) (double arrow) 2BrCl(g) dH=+29.4 kJ/mol I am having trouble understanding this. Will the system shift left, right, or unchanged and why? a.Increasing Temp. b. Increasing pressure in flask by adding Ar. c. Increasing volume of flask d. Adding

  22. third grade math

    how do you check addition problems by adding up? Let's use this addition problem as an example. 21 35 ___ First you add 1 + 5. To check your work, add up, 5 + 1. If you have a column of numbers and you go down each column to add them together, that's

  23. MATH

    What is the index of a radical? When working with radicals, can the radicand be negative when the index is odd? Can it be negative when the index is even? Why is it important to simplify radical expressions before adding or subtracting? How is adding

  24. English II B

    Deana created a computer-assisted slide show. To make the slide show legible, what is one thing she needs to avoid? A)typing bullets in a small font B)adding color and effects to the font C)printing handouts on paper D)adding tables and graphics

  25. Grammar

    Pressure was applied. 1. This is a fragment that can be fixed by adding a subject before pressure. 2. this is a fragment that can be fixed by adding a verb after pressure. 3. This is a fragment that can be fixed by adding both a subject and a verb. 4. This

  26. Organic Chemistry

    What are proper techniques to induce crystallization from a saturated solution? (Select all correct answers.) Allowing the solution to cool down. Scratching the outside of the container with a glass rod. Seeding the solution. Adding a solvent that lowers

  27. Chemistry

    Which of the following is not suitable for testing the presence of an acid? A) adding aqueous potassium carbonate. B) adding aqueous potassium hydroxide. C) adding Universal Indicator. D) adding zinc powder. Personally, I feel that all of them are

  28. Ms.Sue August or Anonymous

    All 3 of you I see usually answer a lot of questions. Can you help me with some of these? 1. Erosion is a slow process that causes change to Earth's surface. All of the following are sources of erosion except A.wind B.earthquakes C.glaciers D.ocean waves

  29. English

    Some examples of tricky plurals include a.changing to y to it and adding -es in nouns that end in y after a consonant, as in city/cities. b.changing f or fe to a v and adding -es to most singular common nouns that end in f or fe, as seen in life/lives.

  30. Chem18

    Coal can be used to generate hydrogen gas by this endothermic reaction: C(s) + H2O(g) CO(g) + H2(g) If this reaction is at equilibrium, which of these stresses would increase the formation of hydrogen gas? (choose ALL of the possible answers - there may be

  31. Science help!

    adding magenta and yellow dyes makes what color? At first i thought it was red. but when I realized we are adding dye's not light im thinking its black.. but im not sure! please help!

  32. Chemestry

    A 1L of buffer was prepared from 0.15 mole of Na2HPO4 and 0.10 moles KH2PO4. a) What is your pH and what is the pH change that adding of 80.0 mL of 0.100 mol L-1 NaOH cause? b) What happen to the pH after adding 10.0 mL of 1.0 mol L HNO3-1.

  33. chemistry

    1L of a buffer composed of NaHC2O4 and Na2C2O4 has a pHof 4.0 and a total molarity of 1. a). what would the effect on the pH be of adding 1 gram of sodium hydrogen oxalate to this buffer? b). what would be the effect on the pH of adding 1 gram of sodium

  34. Grammar

    He had HepB at 1 day of age at 8 weeks he had HepB, DTap, Hib, IPV, and PCV. 1. This is a fragment that requires a verb. 2. This is a comma splice that can be fixed by changing the comma after HepB to a semicolon. 3. This is a run-on that can be fixed by

  35. Chemistry

    consider the equation for the following reaction at equilibrium. X+Y2Z+heat the concentration of the product could be increased by 1.adding a catalyst 2.adding more heat to the system 3.increasing the concentration of Y 4.decreasing the concentration of X

  36. algebra !

    i need help on adding and subtacting rational numbers like -7over12+5 over 6 When adding rational numbers we need a common denominator. We have -7/12 + 5/6 What is the least common multiple of 12 and 6? After you find that make sure both fractions are

  37. chemistry

    Consider the combustion of glucose: C6H12O6(s) + 6O2(g) 6CO2(g) + 6H2O(g) H = −3 kJ/mol Which condition I) Adding more carbon dioxide; II) Performing the reaction in a hotter environment; III) Decreasing the pressure of the system; IV) Adding a reagent

  38. conjectures

    Evaluate the following sums: 1 1+8 1+8+27 1+8+27+64 Add two more line to the list, and make a conjecture about the sums you obtained. this is a pattern. if you look closely than you'll see each number is a product of another number cubed.

  39. math

    Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to and different from adding polynomial expressions? Provide a radical expression for your classmates to simplify. In your own

  40. chemistry

    Consider the following chemical equilibrium: SO3(g) --> SO2(g) + 1/2 O2(g) and Delta H = 98.9J a. Predict weather the forward or reverse reaction will occur when the equilibrium is disturbed by: i. adding oxygen gas ii. compressing the system at constant

  41. Chemistry

    What do I do? a)Devise a scheme for separating Al(NO3)3, AgNO3, Ca(NO3)2 and KNO3 from each other. b)How could you isolate KNO3 from the solution in a.? What aluminum, silver, and calcium salts are insoluble? Given those, could you make those salts by

  42. Chemistry ...ASAP please

    a ferric phosphate solution is prepared by adding 2.4 g of ferric phosphate to a volumetric flask and bringing the final volume to 1.00L by adding water having a phosphate concentration of 1.0 mg/L. what is the concentration of soluble iron in this

  43. chemistry

    A precipitate of copper(II) hydroxide is formed in a reaction. What change will help to dissolve the copper(II) hydroxide? Cu^2+(aq) + 2OH^-(aq) Cu(OH)"subtext"2(s) A. Adding NaOH B. Adding HCl C. Removing CuCl2 D. Removing H2O is the answer for this d?

  44. Chemistry

    Calculate the molarity of a solution made by adding 33.4 mL of concentrated nitric acid (70.4 % by mass, density 1.42 g/mL) to some water in a volumetric flask, then adding water to the mark to make exactly 2000 mL of solution. (It is important to add

  45. Chemistry

    is this right Consider the following reaction at equilibrium N2(g) + O2(g) + heat < = > 2NO(g) Indicate how each of the following will shift the equilibrium a. raising the temperature of the reaction. b. decreasing the volume of the reaction container. c.

  46. physics

    Doing work on a gas always implies Answer a. adding internal energy. b. adding heat. c. changing the volume. d. adding potential.

  47. College Chemistry

    Given 20 mL NaOH; 0.1 M, add 0.05 M HCl, 10 mL at a time. What is the pH initially of NaOH? What is the pH after adding 10 mL 0.05 M HCl? What is the pH after adding 20 mL 0.05 M HCl? What is the pH after adding 30 mL 0.05 M HCl? What is the pH after

  48. Chemistry

    Br2(l)+Cl2(g) (double arrow) 2BrCl(g) dH=+29.4 kJ/mol I am having trouble understanding this. Will the system shift left, right, or unchanged and why? a.Increasing Temp. b. Increasing pressure in flask by adding Ar. c. Increasing volume of flask d. Adding

  49. Physiology

    Indicate whether the following circumstances would tend to increase, decrease or have no effect on the rate of enzyme activity. 1.adding more substrate but keeping the amount of enzyme of the same 2.adding more enzyme but keeping the amount of substrate

  50. Chemistry

    Consider the reaction: N2O4(g) 2NO2(g) delta H^o =58.576kJ; Keq =0.87 at 55degrees celsius What is the effect of each of these changes upon the concentration of N2O4 at equilibrium? a)increasing the temperature b)increasing the volume c) adding more NO2(g)

  51. Finance

    Which of the following would be most likely to increase the coupon rate that is required to enable a bond to be issued at par? (Points: 4) Adding a call provision. Adding additional restrictive covenants that limit management's actions. Adding a sinking

  52. algebra

    How is adding radical exressions similar and different to adding polynomial expressions?

  53. MATH

    WHY IS IT IMPORTANT TO SIMPLIFY RADICAL EXPRESSIONS BEFORE ADDING OR SUBTRACTING? HOW IS ADDING RADICAL EXPRESSIONS SIMILIAR TO ADDING POLYNOMIAL EXPRESSIONS?

  54. Math117

    Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to adding polynomial expressions? How is it different?

  55. math

    Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to adding polynomial expressions? How is it different?

  56. pre-calculus 11

    -x/(x-3) + 2x/(x+2) (x-1) x (x-2) (x+2)/(x-3)(x-3) my question is should i multiply first and then do the adding or subtracting through a LCD or should i do the adding first?

  57. chemistry

    How do these things shift the direction of a chemical reaction?: -adding/removing reactants -adding/removing products -adding/removing energy Thanks! It depends upon the equation and whether the reaction is exothermic or endothermic. Post the entire

  58. chem

    a buffer is made by adding 150 ml of .595M BaF2 and 0f .500M of HF solution. calculate the pH of this buffer system calculate the pH of this buffer after adding .100 mol Hcl calculate the pH of this buffer after adding .0750 mol Ca(OH)2 ka(HF)= 6.9x10^-4

  59. AlgebraII

    Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to adding polynomial expressions? How is it different? Provide a radical expression for your classmates to simplify

  60. AlgebraII

    Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to adding polynomial expressions? How is it different? Provide a radical expression for your classmates to simplify.

  61. Algebra 2/ Radicals

    Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to adding polynomial expressions? How is it different? Provide a radical expression for your classmates to simplify.

  62. algebra

    Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to adding polynomial expressions? How is it different? Provide a radical expression for your classmates to simplify.

  63. computer

    Which of the following is NOT a way you can format an image in Microsoft Word? changing its position adding a Photoshopped element adding a border changing its color B?

  64. math

    you have the numbers from 1 through 9. divide them into 3 groups so that each group has the same total after adding the digits in them.. i got until: adding all the digits makes 45 and and divided by 3 so each will be 15, but what next? any method for that

  65. PHYSICAL CHEMISTRY

    For the equilibrium 2SO2(g) + O2(g) = 2SO3(g), what will change the value of Kp? A adding a catalyst B adding more O2 C increasing the pressure D increasing the temperature

  66. Math

    A technician is adding chemicals to a 210-liter tank. She is adding the liquid at a rate of 2.5 liters per minute. How long will it take her to fill the tank half full?

  67. chemistry

    Study the reaction. A(s) + 2BC(aq) →AC2(aq) + B2(g) ΔH = −92.0 kJ/mol Which change would increase the rate of the forward reaction? A. increasing the pressure B. adding more of A(s) C. adding water D. decreasing the temperature B?

  68. algebra

    Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to adding polynomial expressions? How is it different? Provide a radical expression for your classmates to simplify. Consider

  69. math 1st. grade

    Adding Doubles just means adding the same numberr to itself. Like 2+2=4, 3+3=6, So addind doubles to 18 would be 0+0=0, 1+1=2, 2+2=4, and so forth up to 9+9=18. Maybe this will help you solve the problem. I have a work sheet that has Add Doubles to 18 with

  70. Chemistry

    1. What does adding a salt like KCL do to the pH of a solution? 2. What does adding a base like KOH do to the pH of a solution

  71. math

    how do I solve 28 - 9x = -12 - 11x I tried adding 9x to both sides adding 11x to both sides and doing a million different methods and after i got an answer I went to check it and it was wrong I really don't understand how to do these types of equations

  72. Chemistry

    Reversible equilibrium: what would the effect be by adding hydrogen gas to: 3Fe(s)+4H20(i)Fe3O4(s)+4H2(g) and... effect of adding chlorine gas to: P4(s)+6Cl2(g)4PCl3(i)

  73. computers

    how do i upgrade the bytes on a computer? Do you mean adding memory? That's referred to as adding RAM (random access memory). Wherever you bought your computer, there will be people who can help you decide what to buy and maybe even install it for you. =)

  74. Chemistry

    Help needed on a homework problem - solution of HCN and CN- , Ka 6.2x10^-10 . Is this a buffered solution? Shouldn't the pH be greater than 7, and [OH] >[H]? Does adding a strong acid have more effect than adding a strong base? Thanks.

  75. Chemistry

    How many of the following changes would alter the numerical value of the equilibrium constant Kp for the reaction 2OF2(g) ⇀ ↽ O2(g) + 2F2(g)? I) an increase in temperature II) a decrease of the container volume III) adding more O2 at constant volume

  76. Algebra

    How are the processes of adding monomials and adding polynomials alike? How are the processes different?

  77. Math

    Explain It How is adding and subtracting with money like adding and subtracting whole numbers?

  78. math

    how is adding radical expressions similar to adding poynominal expressions?

  79. Chemistry :(

    Question text Given the following exothermic, equilibrium reaction: 3 H2(g) + N2(g) 2NH3(g) Using Le Chatelier's Principle, which of the following changes would shift the equilibrium toward more production of NH3? Select one: a. Adding a catalyst b. Adding

  80. algebra

    How is adding radical expressions similar to adding polynomial expressions? How is it different? Provide a radical expression for your classmates to simplify.

  81. chem

    How do these things shift the direction of a chemical reaction?: -adding/removing reactants -adding/removing products -adding/removing energy This is how I think I understand it: -adding more reactants pushes it to the right -removing reactants pushes it

  82. Chemistry

    Given the following reaction: 3 H2(g) + N2(g) 2NH3(g) + heat If the following changes were to occur what direction shift will it have (left or right) And what will be the reason of the shift Changes/Stress on system: Adding NH3 Decreasing the pressure

  83. Chemistry

    Given the following reaction: 3 H2(g) + N2(g) 2NH3(g) + heat If the following changes were to occur what direction shift will it have (left or right) And what will be the reason of the shift Changes/Stress on system: Adding NH3 Decreasing the pressure

  84. Chemistry

    1) How would you expect the solubility of the following to vary n a series of solutions of increasing ionic strength created by adding KNO3 a) ammonia b) ammonium chloride 2) If the ionic strength was increased by adding KCl, the solubility of which one of

  85. algebra

    How is adding radical expressions similar to adding polynomial expressions? How is it different? Provide a radical expression as an example.

  86. AP Chemistry

    Hey guys! Stuck on some problems: 1)Consider the following chemical reaction between gases: 2N2O(g) + O2(g)->4NO(g) + heat The amount of O2 at equilibrium will be decreased by: 1. Adding more NO(g). 2. Increasing the pressure by decreasing the volume. 3.

  87. Chemistry

    Consider the case where we are titration 50.0mL of 1.00M HCl (receiving flask) with 1.00 NaOH (burette) Find the pH of the solution: a) After adding 50.00mL of base I do a comparison method to determine the number of moles of NaOH Amount----Volume b) After

  88. Algebra Help!!

    How is adding and subtracting radicals the same as adding and subtracting polynomials?

  89. math

    How is the process for adding two polynomials like the process for how adding two integers? How is it different?

  90. CHEM 102

    Can someone help me with this question please? What is the pH at each of the points in the titration of 25.00 mL of 0.1000 MHCl by 0.1000 M NaOH:i) After adding 25.00 mL NaOH ii) After adding 26.00 mL NaOH thankyou

  91. CHEM 102

    Can someone help me with this question please? What is the pH at each of the points in the titration of 25.00 mL of 0.1000 MHCl by 0.1000 M NaOH:i) After adding 25.00 mL NaOH ii) After adding 26.00 mL NaOH thankyou

  92. English

    Read the sentence, which does not use parallel structure. Every day after work, Sam enjoyed adding new visuals to his music videos, edited them for inconsistencies, added multiple layers of shapes and colors, and testing them with a new projector. Which

  93. Math

    Thanks Damon! first I eliminated z by adding equation 1+2 (1st one *2) and got same as urs x+y= 10. Then, I eliminated z by adding equation 2+3 (2nd equation*3, and 3rd equation*2) and got x-y=6. x+y= 10 x-y=6 x=16 why is this wrong?

  94. Algebra 1b

    Compare and contrast the results of adding or multiplying a value outside the argument of a function to the result of adding or multiplying a value inside the argument of a function.

  95. chemistry

    a ferric phosphate solution is prepared by adding 2.4 g of ferric phosphate to a volumetric flask and bringing the final volume to 1.00L by adding water having a phosphate concentration of 1.0 mg/L. what is the concentration of soluble iron in this

  96. Chemistry

    acetylene gas is produced by adding water to calcium carbide as follows; CaC2 + H2O ---> C2H2 + Ca(OH)2. how many gram of acetylene are produced by adding water to CaC2

  97. Physics

    What would be the result of removing or adding one proton from an atom of gold ? The atomic number of the element would change. It would not be gold anymore. Adding 1 proton increases the atomic number by 1, etc.. The isotope of the new element formed may

  98. Chem

    did I do this right Consider the following reaction at equilibrium N2(g) + O2(g) + heat < = > 2NO(g) Indicate how each of the following will shift the equilibrium a. raising the temperature of the reaction. b. decreasing the volume of the reaction

  99. Math

    1.Celeste ran 2 1/4 mile on Tuesday and 1 1/2 mile on thursday. How many mIles did she run in all. ( I think it's adding the fractions? ) 2. Mr.Sam took 5/8 of a box of snaks and shared with 4 students.what fraction of the box of snake was shared by the

  100. Chemistry

    The temperature of 100.0g of water initially at 25.0 degrees C in a calorimeter increases to 30.0 degrees C after adding a 20.0g piece of hot aluminum. What was the temperature of the aluminum before adding it to water? The specific heat of water and

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