Questions Asked on
February 7, 2008

  1. statistics

    One test for ESP involves using Zener cards. Each card shows one of five different symbols (square,circle,star,cross,wavy lines), and the person being tested has to predict the shape on each card before it is selected. Find each of the probabilities

    asked by cindy
  2. Chemistry

    Concentrated aqueous ammonia contains 1.00 mol NH3 dissolved in 2.44 mol H20. What is the mole fraction of NH3 in concentrated aqueous ammonia? What is the molal concentration of NH3

    asked by Lauren
  3. physics

    A 180-kg crate is sitting on the flatbed of a moving truck. The coefficient of sliding friction between the crate and the truck bed is 0.30. Two taut cables are attached to either side of the crate. Each cable can exert a maximum horizontal force of 650 N

    asked by Dorothy
  4. statistics

    The distribution of scores on the SAT is approx. normal with mu= 500 and std dev=100. a)what proportion of the population have SAT scores above 650? b)what proportion of of the population have SAT scores below 540? c)what is the minimum SAT score needed to

    asked by Tommy
  5. Chemisty

    A solution contains 0.0653g of compound in 8.31g of ethanol. The molarity of the solution is 0.0368m. Calculate the molecular weight of the compound

    asked by Lauren
  6. Chemistry

    Citric acid H3C6H5O7, occurs in plants. Lemons contain 5% to 8% citric acid by mass. The acid is added to beverages and candy. An aqueous solution is 0.688m citric acid. The density is 1.049 g/ml. What is the molar concentration?

    asked by Lauren
  7. Chemistry

    What is the vapor pressure at 23 degree C of a solution of 1.20g of naphthalene, C10H8 in 25.6 g of benzene, C6H6? The vapor pressure of naphthalene can be neglected. Calculate the vapor-pressure lowering the solution

    asked by Lauren
  8. science

    whats the term? 1)the turning of air masses from their original paths because of earth's rotation 2)high altitude winds that occur in places where trade winds and polar easterlies meet prevailing westerlies

    asked by synester
  9. Chemistry

    Citric acid H3C6H5O7, occurs in plants. Lemons contain 5% to 8% citric acid by mass. The acid is added to beverages and candy. An aqueous solution is 0.688m citric acid. The density is 1.049 g/ml. What is the molar concentration?

    asked by Lauren
  10. Reading

    why is charlie so well behaved during a tour of the chocolate factory? From Chapters 24-30 in Charlie and the Chocolate Factory?

    asked by Anonymous
  11. social studies

    What are mummy-shaped figures that worked in the afterlife's fields for the mummy?

    asked by christy
  12. 8th grade math

    Your uncle is three years older than your aunt. The product of their ages is 3190. What are their ages? I know the answer is 55 and 58. But I can't come up with the correct formula or equation to get the answer. I've tried 3(A+3)=3190. It doesn't come up

    asked by KL
  13. environmental sciecen

    what are pheromones and what is a lie fallow

    asked by cassie
  14. Math

    Find the percent of change from $48 to $53.76. State whether the change is an increase or decrease.

    asked by Brandon
  15. world history

    what is the term for the policy of qvoiding conflict that the the United States had originally pursued during the war that was based on the belief that the country should maintain a limited involvement in world affairs while trying to broker a peace?

    asked by Seth
  16. physics

    A 62-kg boy on a 1.50-kg skateboard moving at +1.2 m/s steps off and lands on the sidewalk with a velocity of +1.1 m/s. How fast is the skateboard moving?

    asked by Dorothy


    asked by Chelsee
  18. Probability/Statistics

    1)Two marbles are chosen at random from a bag containing 3 blue and 2 red marbles. The relative-frequency histogram shows the distribution of the number of red marbles chosen. Find P(0 red). (the gragh shows 3/10 for 0 red, 3/5 for 1 red, and 1/10 for 2

    asked by Jon
  19. physics

    A single uranium atom has a mass of 3.97 x 10^-25 kg. It decays into the nucleus of a thorium atom by emitting an alpha particle at a speed of 2.10 x 10^7 m/s. The mass of an alpha particle is 6.68 x 10^-27 kg. What is the recoil speed of the thorium

    asked by Dorothy
  20. Chemistry

    Urea (NH2)2CO is dissolved in 100.0 g of water. The solution freezes at -0.085 degrees C. how many grams of urea were dissolved to make this solution.

    asked by Lauren
  21. Essay (again)

    Assess America's contribution to the Allied victory in World War I. Do you think that the US's involvement was crucial to victory? Why or why not. I am not really looking for anyone's specific opinion, just websites that will give me the info i need to

    asked by Christie
  22. Math

    Find the equation of the tangent line 5x^2+y^2=14 at (1,3). P.S: It's calculus. So far I know this much 10x+2y(dy/dx)=o -10x -10x ___________________ 2y(dy/dx)= -10x (dy/dx)= -10x/2y= -5x/y m= -5(1)/3= -5/3 y=mx+b 3= -5/3(1)+b then what?

    asked by Skye
  23. Algebra

    1)An ice cream store has 31 flavors of ice cream and 10 toppings. A regular sundae has 1 flavor of ice cream, 1 topping, and comes with or without whipped cream. How many different ice cream sundaes can be ordered? A)310 B)372 C)620 D)82 I chose C 2)How

    asked by Jon
  24. math

    find the equation of the line containing the points (2, -3) and has a slope perpendicular to the line 3x-5y+6=0

    asked by cyrus
  25. Chemistry

    A solution was prepared by dissolving 0.817g of sulfur S8, in 100.0g of acetic acid, HC2H3O2. Calculate the freezing point and boiling point of the solution

    asked by Lauren
  26. managerial economics

    After two quarters of increasing levels of production, the CEO of Canadian Fabrication & Design was upset to learn that, during this time of expansion, productivity of the newly hired sheet metal metal workers declined with each new worker hired. Believing

    asked by jean
  27. Physical Science

    Hello, Can some one please tell me if I calcilater this right... Thank You I used: I=LK1(Tf-To) What is the length of an aluminum rod at 65 degrees celsius if its length at 15 degrees celsius is 1.2 meters? my answer: 0.001386 meter

    asked by Mandi
  28. Math (ratios)

    At a certain college, the ratio of the men to women is 5:4. If there are 2800 men, how many women are there?

    asked by Reese's
  29. Accounting

    Burrand Company estimates that annual manufacturing overhead costs will be $600,000. Estimated annual operating activity bases are: direct labor cost $500,000, direct labor hours 50,000, and machine hours 100,000. Compute the predetermined overhead rate

    asked by jimmy
  30. Math

    During peak season, a hotel room costs $135 per night. During the off-season, it costs $90 pernight. Find the percent of change from peak season to off-season.

    asked by Brandon
  31. Science


    asked by Chelsee
  32. jean

    what are the advantages and disadvantages of program budgeting systems. would it be that the money can only be spent on programs within the organizations and nothing else?

    asked by financial management
  33. science help Please

    There are 3.29g of Iodine 126 remaining in a smaple originally containing 26.3 g of iodine 126 the half life of iodine 126 is 13 days. How old is the sample?

    asked by sam
  34. Chem help?

    In an experiment 5.57 +/- 0.02 grams of water chemically decomposes into the products hydrogen gas and oxygen gas. The measured mass of oxygen gas produced in the reaction is 4.9320 +/- 0.0001 grams. The hydrogen gas occupies a volume of 6902 mL. Report

    asked by sool
  35. chemistry

    Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 69C . Pentanol is an alcohol (a hydrocarbon with a "OH" group attached to one of its carbons)

    asked by Anonymous
  36. Physical Science

    Hello, I wanted to know in this problem if I came to the correct answer... Thank You I used: Vo/To = Vf/Tf A quantity of gas has a volume of 0.20 cubic meter and an absolute temperature of 333 degrees Kelvin. When the temperature of the gas is raised to

    asked by Mandi
  37. Year 12 can't do year 7 simple math-help

    brothers homework question, he is up set and even i can't do, seams simple, but i just am not getting it. "If 2*6=4, 4*1=7 and 8*3=1, find the value of 5*5." thanks guys

    asked by Jimbo
  38. statistics

    (population) A normal distribution has a mean of 80 and a std dev of 20. For each of the following scores, indicate wheter the tail of the distribution is located to the right or left of the score, and find the proportion of the distribution located in the

    asked by Shane
  39. statistics

    a sample of n=25 scores has a mean of M=60 and a std dev of s=12. Find the z-score corresponding to each of the following scores from this sample. X=66,X=48,X=84,X=55

    asked by annabelle
  40. Physical Science

    Hello, I wanted to know if I came to the correct answer in the following problem... Thank You I used: I=LK(To-Tf) LD=L-I A silver bar 0.125 meter long is subjected to a temperature change from 200 degrees celsius to 100 degrees celsius. What will be the

    asked by Mandi
  41. algebra I

    If you toss a coin, the probability of gettig heads is 1/2. If you toss a coin 2 times. the probability of getting heds each time is 1/2*1/2 or (1/2)^2. -Write an expression to represent the probability of tossing a coin 'n' times and getting 'n' heads.

    asked by Joanne
  42. algebra

    Factor by grouping 5x^3-5x^2-x+1 Would it be? (x-1)(5x^2-1) or (5x^2-1)(x-1) Usually the answers are in descending order.

    asked by becky
  43. Math

    If an item costs $179.99 and it is marked 25% discount, what would the sale price be?

    asked by Brandon
  44. algebra

    Mrs Lee was given $1200 every month for the household expenses.She used 17/24 of it to buy food for the family, 5/7 of the remainder for clothes and other expenses.She put the remaining money into the bank as savings for the family.Find the amount she put

    asked by MTH
  45. math/algabra

    whats x+2+2x=x+10?

    asked by maura
  46. math

    if a=6 and b=-4, solve...(4a+4b) (4a-4b)

    asked by caitlin
  47. spell

    plz sort these words into the suffixs' -ary and -ate: unfortunate approximate momentary imaginary immediate temporary customary desperate secondary necessary accurate voluntary delicate solitary ultimate moderate ordinary honorary fortunate desolate

    asked by anomous
  48. math

    one number is 6 more than another. If the sum of the smaller number and 3 times the larger number is 34, find the two numbers?

    asked by austin
  49. Discrete Math - Geometric Vectors

    I'm lost! How do you add the following vectors? Please provide a step by step answer! 1) EA - CB + DB + AD 2) PT - QT + SR - SQ

    asked by Anonymous
  50. chemistry

    what is the molecular structure around oxygen in water?

    asked by johnny
  51. CHEM!!

    In an experiment 5.57 +/- 0.02 grams of water chemically decomposes into the products hydrogen gas and oxygen gas. The measured mass of oxygen gas produced in the reaction is 4.9320 +/- 0.0001 grams. The hydrogen gas occupies a volume of 6902 mL. Report

    asked by HELP!!
  52. algebra

    x+3 over x cubed - x squared -6x divided by x squared -9 over x squared + x -12. i got x + 4 over (x squared + 2x)(x-3). am i right?

    asked by anonymous
  53. algebra

    x cubed + x squared over x squared - 16 times x + 4 over 3x to the fourth power + x cubed - 2x squared. i got x + 1 over (x-4) (x+1) (3x+2). is this correct?

    asked by anonymous
  54. french

    what's the future of 'se leve' with accent aigu over 1st 'e' of 'leve'

    asked by anonymous
  55. algebra

    (x^6-13x^3+42)divided by (x^3-6) Is this correct? x^3-7

    asked by becky
  56. story problem

    The mass of Pluto is about 1.31 x 10^19 metric tons. The mass of the sun is about 1.998x10^27 metric tons. About how many times the mass of Pluto is the mass of the sun? Give answer in scientific notation. Is this correct? 1.53x10^8

    asked by becky
  57. spanish

    can someone translate this for me? or help me translate it... lol. plz and ty :) Mi hermana somos altos. [theres a mistake and im supposed to find it and correct it, so plz just tell what it actually says]

    asked by mandi
  58. history =P

    what are the threee major categories of rights?

    asked by tracie
  59. algebra

    Simplify 1/9^-4 One divided by 9^-4 Directions say to simplify answer and type an integer or a fraction. Is 6561 correct?

    asked by becky
  60. algebra

    how do i verify a question when i am solving for Y.. yet i need to subsatoute X first to find Y. such as in this probelm to find Y ((xy)/(x+4)-(2y/x)=3 solve for Y i end up with........lets say that X=4 Y= (3x^2+12x)/(x^2-2x+8) Y=6 now how am i supposed to

    asked by breanna
  61. Chemistry

    Write the formula for each Ionic compound. *barium nitrate

    asked by Anna-Marie
  62. algebra

    Divide and simplify 6^6/6^3 Would the answer be 216 or 6^3?

    asked by becky
  63. microeconomics

    Use the following to answer questions 1-3: 1. Refer to the above diagram. If demand changes from D1 to D2 at the same time supply changes from S2 to S1, equilibrium price will: A) rise and equilibrium quantity will fall. C) rise, as will equilibrium

    asked by Erika
  64. chemistry

    1.92g sample of hydrogen peroxide solution generates 37.8mL O2 at 759 torr and 35 C. What is the percent strength of the peroxide solution? how would you solve this problem and which equations would you use?

    asked by anna
  65. Algebra

    How do I solve this: 3 n - + - =2 8 4

    asked by Jeremy
  66. Math

    if a=6 and b=-4, solve the equation (4a+4b) (4a-b)

    asked by Caitlin
  67. more chem

    What is the pH that would result from the addition of 0.002 moles of HCl to 100 mL of a 0.1 M boric acid/borate, pH= 9.2 buffer solution?

    asked by Anthony
  68. Science

    should there be more or less exploration and mining on public lands in the united states?

    asked by Stacey
  69. AED 200

    Audience recognition Terms for different audience levels Issues of diversity Multiculturalism Issues of sexist language • Explain how these audience characteristics will impact your technical writing process as well as how you will adapt a technical

    asked by Dawn


    asked by Chelsee
  71. Calculus

    f(x)=x^2-x+3 , n=6 , a=0, b=3 find LRAM, RRAM, and MRAM for x is greater than or equal to a or less than or equal to b

    asked by Will
  72. managerial economics

    Engineers at a national research laboratory built a prototype automobile that could be driven 180 miles on a single gallon of unleaded gasoline. They estimate that in mass production the car would cost $40,000 per unit to build. The engineers argued that

    asked by jean
  73. Earth Science

    What is the primary cause of surface currents?

    asked by Julian C
  74. Biology

    Could i pls have an answer to this question:5 adaptations that help placental mammals survive in their environment?

    asked by eva
  75. Algebra distance problem

    I can't figure this one out During a trip, a canoe travles 47 miles at r speed. The second part of the trip the canoe travels 9 miles, but 5 mph slower. The total trip is 5 hrs. What is the speed of each part of the trip? I start with 47/r+9/r-5=5hrs Then

    asked by Marysvoice
  76. Biology

    What are 5 adaptations that can help placental mammals survive in their environment?

    asked by eva
  77. algebra

    (1.6x^3+4.7x^2-3.8x)-(-4.3x^3-4.4x^2+55) Is this correct? 5.9x^3+9.1x^2-3.8x-55

    asked by becky
  78. algebra

    (-7x+3)+(4x^2+1/2x-10) one-half Is this right? 8x^2-13x-14 divided or over denominator 2

    asked by becky
  79. 2008 presidenta election

    Which state primaries award delegates in proportion to their percentage of the vote? How does it end up that Alaska has more delegates than Connecticut?

    asked by skye
  80. algebra

    Multiply (7-2x^4)^2 Is this right? 36(-2x^4+7)

    asked by becky
  81. algebra

    use variable substitution and factoring to find all of the roots of each equation. x^4-9x^2+18=0 how do you do this??

    asked by Lauren
  82. us history

    why did united states policy makers feel the need to secure new markets abroad in the late 1800s? what risks did the united states take in attepting to find new foreign markets? why did the american public favor war with spain what impact did teddy

    asked by mike
  83. criminal justice

    What communication barriers would a police officer and a prison guard may face when communicating with one another or with their clients? What are some possible strategies to overcome these barriers?

    asked by Ree
  84. us history

    what impact did teddy roosevelt have on the office of the presidency i need help!!!!!

    asked by mike
  85. world history

    The British and French wanted U.S. units sed to reinfore their troops already on the battle lines. Who was the general chosen to command the American Expeditionary Force in World War I that refused to break up U.S. units so that they could be used as

    asked by Roderick
  86. chem

    The concentration unit used in Raoult's Law calculations is???

    asked by miley
  87. Physics

    Lithium is the atom which has three protons in its nucleus and three electrons circling the nucleus.(it usuallly has 3 nuetrons as well,but they r not important in this problem.)Two of the electrons circle the nucleus at a distance 1.8* 10^-11 m (app.)The

    asked by jenish
  88. Astronomy NEOs

    When Stuart ( 2003) revised the magnitude for spotting NEOs comets, over 1KM etc from H =18 to H 17.75 ... did this increase , decrease, or did the population of NEOs stay the same. and why ??? Me personally ..I think the number of NEOs over 1 KM has

    asked by Lewis
  89. geometry

    How do you solve this problem? 2x squared = 169?

    asked by Meli
  90. algebra

    find ordered pairs for x+4y=6

    asked by cathy
  91. Biology

    What is transcription of DNA?

    asked by Meli
  92. critical thinking

    How can a person disting between prejudical and nonprejudical use of rhetorical devices?

    asked by sue
  93. Math

    Thanx 4 ur help!!!

    asked by Meli
  94. ethics

    Trends in immigration will continue to shape the face of the United States. What will this face look like in the year 2050? How can the country best prepare for the changing race and ethnicity of its current and future citizens?

    asked by Bob
  95. us history

    why did the american public favor war with spain

    asked by mike
  96. spell

    please help with essay am new and need advice Most people believe that America waged war against Iraq in March of 2003. But the truth, unannounced to many, is that America, along with Britain, had already planned to destroy Iraq twelve years before the war

    asked by kory
  97. spell

    continued... What comes to mind when you think of wealth? An enormous mansion? Piles gold, silver, and diamond jewelry? Millions of dollars? Well in America’s case, wealth is in the rise of the U.S. dollar. -“After control of the oilfields the next

    asked by kory
  98. criminal justice communication

    I was assigned a paper to write against police stun guns and patrol car video surveillance. I have found some good sites and article on Police stun gun But I have not been able to find any information against Police Video Surveillance any help or

    asked by RAY
  99. physics

    An air filled parallel plate capacitor has plates of area 0.0406 m^2 and seperation of 2.5*10^-6 m. a)What is the capacitence for the setup? b)Our capacitor is connected to a 550 v battery, how much energy is stored in the capacitor? c) If -1 mJ of work is

    asked by jenish
  100. math

    what is 4.4 trillion/110 *100

    asked by Ksy
  101. Biology

    How does being tall give plants an advantage?

    asked by Sara
  102. physics

    A uniform electric field of magnitude 75 n/c is created at an angle of 33 degree relative to the positive x-axis. a)Find the voltage between the points (0.5m,0)& (0,0). b)find the value of y such that the voltage between the points (0.3 m, y) and (0,0) has

    asked by Kwang hu111
  103. spell

    Is Cloning Right or Wrong? The lamb has always been a symbol of innocence. This changed abruptly in the spring of 1997. "Dolly," a barely three-month-old sheep, hit the headlines, displacing politicians and pop stars from the front pages of newspapers and

    asked by welker
  104. Science

    How do can we help marshes

    asked by Justin
  105. science HELP

    name two elemetns that have natural occuring radioistopes?

    asked by sam
  106. social studies

    what problems arose because of the increase in industry during the early 1900s

    asked by dara
  107. calculus

    Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. y=x2x=y2 about the axis x=–3

    asked by gennadiy
  108. algebra

    polynomial subtraction a-a2-a-6/2(a-3) a-a(squared)-a-6 divided by 2(a-3)

    asked by steven
  109. Prohibition

    what are some specific consequences of prohibition

    asked by Amanda
  110. Algebra 1

    It takes a lot of snow ofr the federal government in Washington D.C. to shut down, but even they experienced a two-hour delay last Friday. This is to allow people to take it slow in thier way to work. A commute to work that usually takes someone 24 minutes

    asked by Libby
  111. Spanish

    Can someone help me translate this please. Thanks Un millonario de doce anos! La semana pasada, el joven Roberto Ruiz descubrió un tesoro en una casa abandonada. Este tesoro consiste en dos mil monedas de oro antiguas. Muerte de un anciano simpático Ayer

    asked by John
  112. Physical Science

    Hello, Can you tell me if I have the correct answer? Thank You How much heat is required to convert 0.3 kilogram of ice at 0 degrees celsius to water at the same temperature? My answer: 100,375 J

    asked by Mandi
  113. science

    what occurs in a nuclear bombartment reaction

    asked by sam
  114. life science

    I cant grasp half life - the study guide question is how is half life dating used by scientists - I have 2 lines to write an answer

    asked by claire
  115. grammar

    I cannot think of a sentence using the word littler properly. This is a second grade assignment. Can someone please help?

    asked by Mary
  116. earth science

    where does the energy that drives the rock cycle come from

    asked by jose
  117. french

    what's the future tense of tomber?

    asked by anonymous
  118. globle history 2

    which asian countries neighbor japan

    asked by neko
  119. french

    write the verb in the future: se souvenir (tu) would this be right- se souvenu?

    asked by anonymous
  120. french

    what is the future tense of sortir?

    asked by anonymous
  121. Math

    To gather enough nectar to make 1 pound of honey, a bee must visit 2 million flowers. How many flowers must a bee visit to make 64 ounces of honey?

    asked by Jake
  122. algebra

    40x^8-56x^4+24x divided by 8x Is this correct? 5x^7-7x^3+3

    asked by becky
  123. more algebra

    (4-x)(3-2x)= Is this correct? 12-11x+2x^2

    asked by becky
  124. Religion

    What events and figures have shaped the development of Islam in the united states?

    asked by Meia
  125. AP Literature

    I have to do a screenplay for my AP/Lit class. where can i find like examples of good screenplay done before? an a like a format guide on how to write one up?

    asked by Bryan
  126. algebra

    Factor completely w^2+9-6w Is this right? (w-3)(w-3)

    asked by becky
  127. Math - Statistics

    What is the inverse of a factorial and how would i calculate it. E.g. 60000 = n! How would i get n?

    asked by Danielle
  128. spelling

    what new words can you make out of the letters hummingbirdwaterproof

    asked by cynthia
  129. Math

    What is the vertical asymptote of the function: f(x)= (X+5)/((X^2)-12X+36)

    asked by Christine
  130. algebra

    Choose the simplifed form of (4n^-3)^-3. The choices are 1/64n^9 4n^-9 64/n^9 64n^9 I chose 64/n^9

    asked by becky
  131. algebra

    I still don't get it when i go back to the original and use X=4 to solve for y and then end up with Y=0 what am i supposed to do next

    asked by breanna
  132. Math

    Radius of the circle: ((X-4)^2)+((y+2)^2)-81=0

    asked by Christine
  133. algebra

    Add (r-8s+6)+(4r+7s)+(s+3) Is this right? 5r+9

    asked by becky
  134. algebra

    Factor: check by multiplying x^2-6x Is this correct? x^2(x-5)

    asked by becky
  135. geometry

    How do you find the hypoynuse of a triangle if the legs are 9 radical 2?

    asked by M
  136. vocabulary

    What word means fear of meeting new people? Thanks for helping

    asked by Cynthia
  137. us history

    why did the american public favor war with spain

    asked by mike
  138. Math (Precalculus)

    I have no idea how to do these problems: Given that U and V are in Quadrant II and sinU = 3/5 and secv = -ã13/3, find: A) cos 2U B) sin (v/2) c) cos(U+V)

    asked by Joe
  139. chem

    What should you mix with trisodium citrate to prepare a buffer solution, a strong acid or a strong base?

    asked by Anthony
  140. world history

    67. what is the term for the Gernam attacks on merchant and passenger sips carrying American citizens that were resumed in December of 1916 and were largely responsible for he U.S. entering the war on the side of the Allies?

    asked by Roderick
  141. world history

    what is the common name for the clause in the treaty that forced Germany to assume full blame for causing the war?

    asked by Seth
  142. grammar

    is when a preposition?

    asked by Mackenzie
  143. grammar

    what type of phrase is under the staircase?

    asked by Mackenzie
  144. Mass Media

    What effect do you think the mass media of books has on Businesses?

    asked by Waheedah
  145. health

    How many bones are in the human body?

    asked by Meli
  146. persian literature

    please help me find the works of hafiz, jami, sadi (persian poets)... what are their basic reasons in doing in their works...

    asked by klar maesen
  147. geometry

    What is the hypotnuse of a triangle if the legs are 9 radical 5?

    asked by Meli
  148. Algebra

    what is n? 3 n -+- =2 8 4

    asked by Jeremy