Questions Asked on
March 16, 2014

  1. MATH

    SELECT THE APPROXIMATE VALUES OF X THAT ARE SOLUTIONS TO F(X)=0 Where f(x)=-3x^2+9x+3 not sure which answerer is correct (2.08,-0.48) or (-5,8)

    asked by * HOPELESS
  2. math

    Help please select the approcimate values of x that are solutions to f(x)=0 where f(x)=-5x^2+8x+5 I so am lost please show me step by step

    asked by * HOPELESS
  3. Maths

    A standard pack of 52 cards consists of 4 suits, hearts, diamonds, clubs and spades. Each suit has 13 cards, from Ace to King. We deal randomly 5 cards from the deck of 52. 2 deals differing only by the order are considered the same. How many different

    asked by Fung
  4. statistics

    A food manufacturer samples 7 bags of pretzels off the assembly line and weighs their contents. If the sample mean is 14.2 oz and the sample standard deviation is 0.60 oz., find the 95% confidence interval of the true mean.

    asked by Anonymous
  5. Statistics

    Compare the standard deviation for the heights of males and the standard deviation for the heights of females in the class.

    asked by Phil
  6. maths

    If 3^x + 4^x =5^x. Find X

    asked by ogboyeb
  7. law

    there are two kinds of law in south africa.write a paragraph in which you identify these two kinds of sources of law;name the examples of sources of law that belong to each kind;and indicate the differences betweem these teo kinds of sources of law.

    asked by nancy
  8. Science

    Determine the pkb of methylamine if the kb is 4.4*10^-4.

    asked by Terry
  9. Chemistry

    Alternative answers: A)10 B)13 C)1.9 D)3.8 E)12

    asked by Terry
  10. Math

    5-24,3-40,8-15, 12-...? What is the missing number?

    asked by Namith
  11. science

    350g ofwater at 30 degree celcius is contained in a copper vessel of mass 50g. Calculate the mass of ice required to bring down the temperature of the vessel and its content at 5 degree celcius.

    asked by manoj
  12. Math

    you have a job assembling tables and chairs. you are paid $30 for each chair and $70 for each table. last week you assembled a total of 14 items and make $660. how many did you make of each?

    asked by Katelyn
  13. Probability

    Let X and Y be normal random variables with means 0 and 2, respectively, and variances 1 and 9, respectively. Find the following, using the standard normal table. Express your answers to an accuracy of 4 decimal places. P(X>0.75)= P(X≤−1.25)= Let

    asked by abc
  14. Math

    Let X and Y be normal random variables with means 0 and 2, respectively, and variances 1 and 9, respectively. Find the following, using the standard normal table. Express your answers to an accuracy of 4 decimal places. P(X>0.75)= P(X≤−1.25)= Let

    asked by abc
  15. chemistry

    calculate the molarity of the solution prepared by dissolving 16.45g NH4NO3 in water to make 250.mL solution.

    asked by hunter
  16. Economics

    THE SOUTH AFRICAN GOVERNMENT IS NOT PROVIDING ENOUGH WELFARE OR SUBSIDIES TO THE POOR AND UNDERPRIVILEDGED. 1.What are welfare payments or consumer subsidies? 2.What is the South African government providing and to whom? 3.What are the cost and

    asked by Penwell
  17. Physics

    A man wishes to cross a river from A to B, a distance of 800m. He can row at 8km per hour, in what direction should he head the boat to travel directly from A to B? How long does it take him to reach B? Please show working. Thank You!

    asked by Anna
  18. math

    Jack has 2009 unit cubes glued together to form a cuboid. He opens a packet containing 2009 stickers. He has enough stickers to stick one on each cube. How many stickers does he have left?

    asked by Lucy
  19. Accounting

    the Dwyer corporation incurred costs of 114000 in purchasing a process which it eventually had patented. The patent was issued on July 20x1. To secure the patent, an additional 6000 had been spent on legal fees. On June 30 20x3, a patent infringement suit

    asked by Diana
  20. Physics

    A .75kg block is going at a velocity of 1.5m/s and moves on a frictionless surface. Then all of a sudden, the block hits a rough patch. The rough patch is .5m long and has a coefficient of friction of .25. Then it slides onto the frictionless surface

    asked by Jared
  21. Geometry

    Christopher wants to determine how far away a helicopter is from where he is standing. He knows the helicopter is sitting on the edge of a roof of an apartment building that is 400 feet high and 1,050 feet from where he is standing. Using the information

    asked by Morgan
  22. Chemistry

    Determine the rate constant for the following second-order reaction: A=C+2D given that the initial concentration of A is .3 M and that the concentration of C increase to .01 M in 200 seconds. Express the result in terms of the rate law for the loss of A.

    asked by Anonymous
  23. Chemistry

    When the rate of the reaction 2NO+O2=2NO2 was studied, the rate was found to double when the O2 concentration alone was doubled but to quadruple when the NO concentration alone was doubled. Which of the following mechanisms accounts for these observations?

    asked by Anonymous
  24. Chemistry

    The net reaction for fusion on a star like our Sun is: 4H(1,1) ==> He(4,2) + 2e(0,+1) Calculate the mass defect for this reaction. If one atom of He is formed this way, calculate the energy released. If one Kg of He is formed, calculate the energy

    asked by Jay
  25. science

    Calculate the amplitude of a wave

    asked by casey
  26. Math

    Towns A to F are to be connected by cable along existing roads. Need to figure the minimum length of cable required. Eash town must be connected to at least one other town. Distances are in miles. A-B 20, A-E 71, A-F 38, B-A 20, B-C 58, B-E 62,C-B 58, C-D

    asked by Cassidy
  27. Science

    do pure substances have different chemical and physical properties?

    asked by Steve
  28. PHYSICS

    Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 8.9-kg projectile from rest to a speed of 4.2 × 103 m/s. The net force accelerating the projectile is 1.4

    asked by Tom
  29. basic college math

    need the answer to track A offers a flat fee of $25 and $.40 per mile. truck b offers a flat fee of $30 and $.25 per mile

    asked by linda
  30. math

    Simplify,root 3xy^3 root 2x^2y divided by root 6x^3y^4 x>0,y>0

    asked by Scholastica
  31. Science

    when molecules of water vapor in the air come into contact with a cold can of soda they lose energy slow down and form a liquid due to a decrease in what?

    asked by Steve
  32. cal

    Using the Second Partials Test Find the relative extrema of f(x,y)=-x^(3)+4xy-2y^(2)+1

    asked by tony
  33. Math

    What is a trend line on a scatter plot? A. a visual representation of the relationship between two variables. B. a line connecting only the highest and lowest values on a graph. C. A line connecting all the data points on a scatter plot* D. Any line of

    asked by Anonymous
  34. Science

    a substance made of two or more elements chemically combined in a set ratio or proportion is called what

    asked by Steve
  35. English

    "That is what I did to make my difference." That's what I put for my body closing sentence and my teacher considers it lame. How could I improve it?

    asked by Anonymous
  36. Mrs. Sue Please Help

    I posted a question for my education class yesterday and have gotten no reply. Will you look at it and see if you can help me. I am running out of time.It is under Education Cathy.

    asked by Cathy
  37. Biology

    What is a mutation? How does this change the information in a DNA molecule?

    asked by Anonymous
  38. math

    You are pouring water from a cylindrical can is 7 cm in diameter and 10 cm high into a rectangular pan that is 20 cm in width, 9 cm in length and 14 cm deep. How many cans, can you pour into the pan? Use 22/7 for pi.

    asked by Camilla
  39. Biology

    When a teapot boils, we see a white cloud rising from the spout. The white cloud is composed of: A. water in the liquid phase B. water in the gaseous phase c. water molecules coming apart to from H+ and OH- ions D. H+ and OH- ions coming together to form

    asked by Anonymous
  40. Geology

    Hi i'm looking for some help finding information on the topic of "mineral deposits" - specifically; where are Ontario, Canada's largest ones, what are they & how did they form? I'm having trouble finding enough research on this topic for my paper so any

    asked by Mikey
  41. chemistry

    The specific heat of ethanol is 0.59 cal/g Celsius If one adds 450 cal of heat to 37 g of ethanol at 20 celsius what would the final temp be

    asked by Anonymous
  42. Numerical Analysis

    Use appropriate Lagrange interpolating polynomials of degrees one, two, and three to approximate each of the following: a. f(8.4) if f(8.1) = 16.94410, f(8.3) = 17.56492, f(8.6) = 18.50515, f(8.7) = 18.8209 help pls

    asked by Ahmed
  43. bcf103

    your acquisition program expects to award a vehicle production contract in April 2005. The first item from this contract is expected to be delivered in January 2006. The estimated unit cost for each vehicle is $1 million (then-year dollars and the

    asked by Anonymous
  44. Geology

    Does anyone know where are Ontario's largest mineral deposits other than the ring of fire in the north? Thanks for the link Ms. Sue, still having trouble.

    asked by Mikey
  45. calculus

    using the method of shells, set up, but don't evaluate the integral, an integral for the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. Y=e^x, x=0, y=2, about y=1

    asked by marks
  46. Physical Science 9

    the contents of a can of air freshener are gaseous when sprayed but remain a liquid in the can due to what?

    asked by Steve
  47. Physical Science 9

    a substance made of two or more elements chemically combined in a set ratio or proportion is called what

    asked by Steve
  48. Physical Science 9

    when exposed to the same amount of heat for the same amount of time, a 3 g sample of copper will experience a greater temperature change then a 12 g sample of copper due to its smaller what?

    asked by Steve
  49. algebra

    Simplify (x^3y^4/z^6)^2 (a^0b^6)^0 (-2x)^-6 (4^2)^3 (x/3)^4

    asked by billy
  50. algebra

    Evaluate each polynomial for the given value of the variable. –x2-5x+6; x= -3 2x2-4x-1; x= 5

    asked by billy
  51. Physics

    no matter how i work it out, i keep getting the wrong answers. please help!!! i only have two more submissions before it closes on me. A sample of blood is placed in a centrifuge of radius 14.0 cm. The mass of a red blood cell is 3.0 x 10^-16 kg, and the

    asked by Please Help!!!
  52. physics

    A 28000 kg railroad freight car collides with a stationary caboose car. They couple together, and 20 percent of the initial kinetic energy is dissipated as heat, sound, vibrations, and so on. What is the mass of the caboose?

    asked by Tully
  53. english

    Someone can help me this Marking the rhythm please. Mark the strong beats in each line: Mary had a little lamb, its fleece was white as snow, and everywhere that Mary went, the lamb was sure to go.

    asked by Anonymous
  54. statistic

    You draw one card from a shuffled standard deck or cards (cards are in four suits-red diamonds, red heart, black clubs and black spades-and are numbered 2,3,4,5,6,7,8,9,10, J,O,K,A). A.What is the probability of drawing a red card B.What is the probability

    asked by HELEN
  55. English

    1. What's she like? - She's really tall. 2. What's the boy like? - He is cute. 3. What's she like? - She is handsome. (Are they grammatical?)

    asked by rfvv
  56. Biology help please!

    What is your opinion of the balance of nature hypothesis? Would the deer on the island be better off, worse off, or about the same without the wolves. Defend your position.

    asked by Anonymous
  57. math

    If P^0.223 =1 + P^0.123. Solve for P. Note:only a genius can solve this. Best of luck

    asked by ogboyeb
  58. Literature

    Fallacies are errors in: emotional appeal organizational structure logical thinking choice of details

    asked by thatdancingchic
  59. Chemistry

    This is a problem I got on my Mastering Chemistry homework: Consider the following reaction: H2(g)+I2(g)⇌2HI(g) A reaction mixture at equilibrium at 175 K contains PH2=0.958atm, PI2=0.877atm, and PHI=0.020atm. A second reaction mixture, also at 175 K,

    asked by Anna
  60. Chemistry

    2 NaOH + CuSO4  Na2SO4 + Cu(OH)2 100g of Cu(OH)2 is needed. Assuming 100% yield, how much of 1M NaOH and 0.5M CuSO4 must be used in mL?

    asked by Selina
  61. Physical Science 9

    when an electric current is passed through water 2 gasses are formed is this a chemical or physical change

    asked by Steve
  62. English

    1.Read the paragraph and translate them into Korean one by one. 2. Read each sentence and translate the sentence into Korean one by one. 3. Read each sentence and translate it into Korean directly. 4. Read and translate each sentence at the same time into

    asked by rfvv
  63. Chemistry

    2) Given the balanced reaction equation predict the moles of each product given the following reactants: AlCl3 + 3 NaHCO3 Al(OH)3 + 3 NaCl + 3 CO2 AlCl3 NaHCO3 Al(OH)3 NaCl 58.4 CO2 a 1 mol 1 mol ? ? b 1 mol 3 mol ? ? c 3 mol 1 mol ? ?

    asked by Selina
  64. Calculus Help Please!!!

    Use implicit diff. to find dy/dx of each of the following. In the following x,y and (a) are all variables. Show step by step please! Thank you! 1) y^2 = x^2+a^2 2) y^2+ay = x^2+ax+a^2

    asked by Josh
  65. Calc

    Differentiate f and find its domain. Show step by step please! f(x)=lnlnln(x) Thanks!

    asked by JuYoung
  66. mat 116

    Simplify (2x)^3+2^3x

    asked by cory
  67. math

    City Cellular purchased $28,900 in cell phones on April 25. The terms of sale were 4/20, 3/30, n/60. Freight terms were F.O.B. destination. Returned goods amounted to $650. . If the manufacturer charges a 4 1/2 % late fee, how much would City Cellular owe

    asked by Anonymous
  68. PHYSICS

    A 0.380 kg pendulum bob passes through the lowest part of its path at a speed of 2.03 m/s. What is the tension in the pendulum cable at this point if the pendulum is 83.1 cm long? When the pendulum reaches its highest point, what angle does the cable make

    asked by JOE
  69. math

    Finney & Company purchased $1,800 of merchandise on 5/6. The terms were 2/15 EOM. The sneakers were received on 5/20, sent FOB Shipping Point. Freight charges amounted to $45. What payment must be made by that date to take advantage of the discount?

    asked by Karla
  70. Calculus Help

    Use logarithmic differentiation to find the derivative of the function. show steps please! y=(e^-xcos^2(x))/(x^2+x+1)

    asked by Tim
  71. Algebra

    1) There are two pet stores in zacharys town. There are dogs, cats, and hamsters at the first pet store. The second store has dogs, rabbits, and fish. Write a set that represents all of the different pets stores in the town. 4) The cheerleading squad is

    asked by Can someone help???
  72. Trigonometry

    What are the exact solutions within the interval [0,2pi)? sin2x=cosx

    asked by Anonymous
  73. Chemistry

    Find the molarity of 0.02g of silver nitrate dissolved in 1kg of water

    asked by Selina
  74. English

    Thank you for your help. Posted by rfvv on Sunday, March 16, 2014 at 3:35pm. 1. What's she like? - She's really tall. 2. What's the boy like? - He is cute. 3. What's she like? - She is handsome. (Are they grammatical?) English - Writeacher, Sunday, March

    asked by rfvv
  75. physics

    calculate the heat given up when 0.1kg of steam at 100¡ã© condenses to h20 at 40¡ã©(s.l.h of vaporisation = 2.2¡Á10^6) (c=4200)

    asked by soft
  76. C++

    The variables arr1 and arr2 have been declared as pointers to integers . An array of 10 elements has been allocated, its pointer assigned to arr1, and the elements initialized to some values . Allocate an array of 20 elements , assign its pointer to arr2,

    asked by Frank
  77. Chemistry 151

    5) How many mL of 1M HCl is used to make the following dilutions? a) 100mL of 0.1M HCl = b) 250mL of 0.5M HCl= c) 10ml of 0.01M HCl= 36.64 is the molar mass of hcl do I divide that into ml?

    asked by Selina
  78. psychology

    The sense of smell is closely linked to: A. proper functioning of the auditory canal. B. perceptual constancy. C. memories and emotions. D. the physiology of the taste buds.

    asked by Anonymous
  79. statistic help please

    2. A survey of 259 families was made to determine their vacation habits. The two way table below sorts the families by location and the vacations by the length of the vacation. Rural Suburban Urban Total 1–7 days 80 39 37 156 8ormore days52 32 19 103

    asked by shantel
  80. Chemistry

    What is the molarity of an aqueous solution that is 6.44% glucose (C6H12O6) by mass? (Assume a density of 1.03 g/mL for the solution.)

    asked by Shelby
  81. Math plz help me!!! URGENT!!

    Find the volume of a cone with a radius of 10 mm and a height of 6 mm. 628 mm3 600 mm3 1,884 mm3 1,254 mm3*** Find the lateral area of a cone with a radius of 7 ft. and a slant height of 13 ft. Use 3.14 for π and round to the nearest whole number. 439 ft2

    asked by anonymous
  82. english

    list three sets of rhyming words from this poem. One set has four words. Summer. When summer blues the skies and thrushes sing for hours, and gold and orange butterflies float by like flying flowers. Although I squint my eyes the way a thinker does,

    asked by Anonymous
  83. AP Calculus

    The base of a solid is bounded by y =|x|+a, 0

    asked by Anon
  84. AP Calculus

    The average area of all squares with sides between a inches and b inches (b>a) is ____ in^2.

    asked by Anon
  85. Physics

    A 2.2 uC charge is located on the x-axis at x = -1.5 m. A 5.4 uC charge is located on the x-axis at x = 2.0m. A 3.5 uC charge is at the origin. Find the net force acting on the 3.5 C charge.

    asked by Anonymous
  86. health

    1.D 2.A 3.D 4.B 5.C 6.C 7.B 8.A 9.D 10.D 11.B 12.A 1. Joey lifts a heavy backpack off the ground.as he lifts the backpack,he keeps his legs straight and uses his biceps and back muscles to lift.in your analysis of joeys's form,you conclude he needs to use

    asked by Kayla
  87. physics

    A force of 15N acts in the forward direction on a carton of 3kg. Suppose a friction force of 6N opposes the carton motion. Find the following: 1) the net force 2) the acceleration of the carton

    asked by Rasha
  88. Chemistry

    What is the percent by volume concentration of a solution containing 300.mL of isopropyl alcohol and enough water to give 400.ml of solution?Which component is the solute and which is the solvent?

    asked by Hannah
  89. Math 2 questions

    A rectangular prism has a width of 92 ft and a volume of 240 ft3. Find the volume of a similar prism with a width of 23 ft. Round to the nearest tenth, if necessary. 3.8 ft3 60 ft3 15 ft3 10.4 ft3 A pyramid has a height of 5 in. and a surface area of 90

    asked by anonymous
  90. help please statistic

    Teenage drivers pay more for automobile insurance than older drivers. Also, many insurance companies offer discounts for teenage drivers that achieve good grades. Assume that 20% of all teenage drivers are involved in accidents each year. Assume that 10%

    asked by HELEN
  91. To Nina

    I think you transposed the numbers for mass proton on your post yesterday which may be the reason you had trouble getting the answer in the book. I've posted a response at the original post which can be found here.

    asked by DrBob222
  92. Probability

    According to the record of the registrar's office at a state university, 40% of the students are freshman, 25% are sophomore, 20% are junior, and the rest are senior. Among the freshmen, sophomores, juniors, and seniors, the portion of students who live in

    asked by Morgan
  93. Calculus

    Solve the boundary-value problem. y'' + 5y' - 6y = 0 , y(0) = 0 , y(2) = 1

    asked by Sandy
  94. Maths

    A debate team of 4 is to be chosen from a class of 29 where the order in which the members of the team are chosen does not matter. There are two twin brothers in the class. How many possible ways can the team be formed which will not include any of the

    asked by Maddie
  95. Calculus

    Solve the initial-value problem. y'' - 2y' + y = 0 , y(2) = 0 , y'(2) = 1

    asked by Sandy
  96. art appreciation

    Choose 3 works of art from 3 artists from the Baroque period through the Postmodern era. Your 3 works of art should come from the time periods or art movements covered in the readings from Unit 4 and Unit 5. This assignment will have 6 Sections (A–F).

    asked by jor-rell
  97. Language Art (Please Check)

    1.C which of the following is a simple sentence? A.she lit a lantern and raced toward the bridge B.the lantern did not work,so she tossed it aside C.buck and minnie were the first horses out of the barn D.she was startled by a sound,which turned out to be

    asked by matt
  98. Ethics

    1. Which of the following is a key Aristotelian idea that describes a midpoint between extremes of excess and deficiency? A. Eudaimonia B. The golden mean C. The middle path D. Care is it B 2. Which of the following is a virtue commonly emphasized in

    asked by Any
  99. Physics

    A 2.2 C charge is located on the x-axis at x = -1.5 m. A 5.4 C charge is located on the x-axis at x = 2.0m. A 3.5 C charge is at the origin. Find the net force acting on the 3.5 C charge.

    asked by Anonymous
  100. Physics

    A 2.2 C charge is located on the x-axis at x = -1.5 m. A 5.4 C charge is located on the x-axis at x = 2.0m. A 3.5 C charge is at the origin. Find the net force acting on the 3.5 C charge.

    asked by Anonymous
  101. Ethics

    1. With regard to how we feel about ourselves and our own accomplishments, which of the following would be the virtuous midpoint between moral deficiency and excess? A. Arrogance B. Servility C. Self-respect/proper pride D. Courage is it C 2. Part of the

    asked by Any
  102. health(MS.SUE)

    1.D 2.A 3.D 4.B 5.C 6.C 7.B 8.A 9.D 10.D 11.B 12.A 1. Joey lifts a heavy backpack off the ground.as he lifts the backpack,he keeps his legs straight and uses his biceps and back muscles to lift.in your analysis of joeys's form,you conclude he needs to use

    asked by Kayla
  103. Management for Organizations

    he most important difference between managing and leadership can best be described as follows

    asked by Anonymous
  104. Ethics

    1. When confronted with a moral dilemma, care ethics encourages us to consider: A. relevant duties and imperatives. B. equality and proportionality. C. situational factors and the needs of all involved. D. natural and legal rights. im confused between B

    asked by Any
  105. poetry part 1

    which one of the following lines best illustrates personification? a. spring is a dream unsung b. a narrow wind complains all day c. the fog comes on little cat feet d. she floated graceful as a dove. I think b or d

    asked by cali
  106. english

    Underline the gerund phrase in each sentence. Then, indicate whether the phrase functions as a subject (S), an object of a preposition (OP), a direct object (DO), an indirect object (IO), or a predicate nominative (PN). 1. Pablo Morales became known as the

    asked by felicity turner
  107. chemstry

    the most prominent line in the spectrum of an element is 267.2 in what region of the electromagnetic spectrum is this line found

    asked by Anonymous
  108. Physics

    A 540 g block is released from rest at height h0 above a vertical spring with spring constant k = 320 N/m and negligible mass. The block sticks to the spring and momentarily stops after compressing the spring 19.8 cm. How much work is done (a) by the block

    asked by Fiona
  109. Calculus Help

    Use logarithmic differentiation to find the derivative of the function. y = (tan x)^(7/x)

    asked by Kimberly
  110. math

    Ms.whittier wrote the following on the board:the product of 6 and the sum of 4 and 5.sherry wrote the following expression,6x4+5.did she write the correct expression?why or why not.

    asked by melissa
  111. Stats

    Allen's hummingbird (Selasphorus sasin) has been studied by zoologist Bill Alther.† Suppose a small group of 17 Allen's hummingbirds has been under study in Arizona. The average weight for these birds is x = 3.15 grams. Based on previous studies, we can

    asked by Alexus
  112. english

    Put an accent mark above the strong beats in the first four lines of the poem : Back and Forth. Back and forth go the ferries, back and forth from shore to shore, hauling people, trucks and autos, back and forth from shore to shore.

    asked by ezekiel
  113. Life Orintation

    i dentify three study field/career paths in order of preference and provide two reasons for each choice

    asked by Sicelo Innocent Nkosi
  114. Language Art help

    How does the great radio scare help you gain an understanding of past events? A.it tells why people are afraid of things they don't understand B.it tells of a radio broadcast that sounded so real people believed it was true C.it tells of an event that led

    asked by Kayla
  115. math

    please solve 100 divided by 5 to the 2nd power times 4 to the 3rd power.

    asked by Rose
  116. chemistry

    Upon decomposition, one sample of magnesium fluoride produced 1.95 kg of magnesium and 3.05 kg of fluorine. A second sample produced 1.10 kg of magnesium.

    asked by elijah mann
  117. math

    An architect was designing a rectangular room with a lenghth of 16ft,a width of 14ft,and a height of 10ft.what is the volume of the room?I added and got 40 cubic feet but not for sure if its right

    asked by melissa
  118. science

    how do you explain the millions of different substances found on earth

    asked by darla
  119. Chemistry

    I have discovered a new chemical compound with the formula A2B. If a saturated solution of A2B has a concentration of 4.35x10-4M. a) What is the concentration of B2- ions? b. What is the concentration of A1+ ions? c. What is the solubility product constant

    asked by Serena
  120. Math

    Can someone show me how to solve these questions. A plane is is flying 240 mph heading N60°E. The wind is blowing S30°E at 30 mph.   6. What is ground speed of the plane?    The ground speed of the plane is 266.40. 7. What is the smallest angle in the

    asked by Crewniverse
  121. physics

    Light enters a container of liquid at an angle of 35° to the normal; the refracted beam makes an angle of 21° with the normal. Calculate the index of refraction of this liquid.

    asked by erty
  122. Algebra

    1) There are two pet stores in zacharys town. There are dogs, cats, and hamsters at the first pet store. The second store has dogs, rabbits, and fish. Write a set that represents all of the different pets stores in the town. 4) The cheerleading squad is

    asked by Can someone help???
  123. math

    please somebody explain the product of 6, and the sum of 4 and 5?I have to show if 6x4+5 is the right answer.

    asked by melissa
  124. Math

    Find the dimensions of a rectangle of maximum size that will fit into a half circle of radius 27

    asked by Haris
  125. Math 134

    A single person could expect to pay $4,760 in income taxes on an adjusted gross income of $34,000 how much more tax should the person expect to pay if her adjusted gross income increased by $2,000, knowing that this owuld not move her into the higher tax

    asked by In need of help
  126. trig

    Find all angles, 0≤A

    asked by Anonymous
  127. Math

    George says that if you subtract 185 degrees from an angle that measures 360 degrees, the new angle is an obtuse angle. Is this true

    asked by Nina
  128. math

    Bubble wrap sells in sheets, and each sheet has 1 million individual spherical bubbles, each with a diameter of 0.01 m. What is the total volume of air contained in the bubbles of two sheets of bubble wrap? Round to the nearest tenth.

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  129. english grammar

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  130. Math 117

    If you can please help, I would greatly appreciate it! Determine the equation of g(x) that results from translating the function f(x) = (x + 10)2 to the right 12 units. Thank you!

    asked by Caity
  131. Math 117

    Consider the equations: f(x) =-6x-1 and g(x)=4x^2 Select the solution for (fg)(x)

    asked by Caity
  132. Math 117

    If you can please help, I would greatly appreciate it! Determine the equation of g(x) that results from translating the function f(x) = (x + 10)^2 to the right 12 units. Thank you!

    asked by Caity
  133. math

    state the corrdinates of the centre of the circle described by the equation. x^2+y^2=R^2 please help!

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  134. Algebra

    Compute and write your answer in scientific notation. (4.3 x 10-8) (1.5 x 109)

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  135. algerbra

    A taxi company charges $2.40 for the first mile and $1.20 per mile for each additional mile. How much would the bill be for a 15 mile trip?

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  136. Algebra

    Compute and write your answer in scientific notation. 8.2 x 105 2.75 x 10-3

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  137. Algebra

    Compute and write your answer in scientific notation. 6.3 x 10-7 3.25 x 10-12

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  138. Math 134

    Sorry to bother those who are helping me but I simply just do not understand and really need help. A single person could expect to pay $5220 in income taxes with an adjusted income gross of $29,000. If my adjusted gross increases to $2,000 but does not

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  139. Math

    Pam served her apple pie on a 13 inch diameter dish. She wanted to tie a ribbon around the dish to make it a little more festive. How long does the ribbon need to be in order to fit around the dish?

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  140. Physics

    Three point charges of 8 C, 3 C, and -5 C, are locate at the top, bottom left, and bottom right corners respectively of an equilateral triangle of side 1Å. Find the magnitude and direction of the net force on the 3 C charge.

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  141. Math 134

    Add or subtract and simplify if possible: 2x + 9 -36 ---- --- --------- x+3 x-3 x^2-9

    asked by In need of help
  142. Please help!

    If you can please help, I would greatly appreciate it! Determine the equation of g(x) that results from translating the function f(x) = (x + 10)^2 to the right 12 units. Thank you!

    asked by Anonymous
  143. Math

    How many square inches of crust would it take to cover the bottom of a pie dish with a 15 diameter?

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  144. Chemistry Help Please

    Each of the following statements is false. Rewrite each so that it makes a correct statement about free energy. a. ΔGuniverse > 0 for any spontaneous process. b. ΔH = ΔG TΔS.

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  145. math

    determine the equation of a circle that has its center a (0,0) and passes through each point. a)(6,-3)

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  146. Math college level

    Sorry to bother those who are helping me but I simply just do not understand and really need help. A single person could expect to pay $5220 in income taxes with an adjusted income gross of $29,000. If my adjusted gross increases to $2,000 but does not

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  147. Math

    Becca wants to make a giant cherry pie to try to break the world record. If she succeeds in making a pie with a 20 foot diameter, what will be the total distance around the pie?

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  148. Chem Check Please!!!

    Using standard thermodynamic data from Appendix L of your text, calculate the equilibrium constant at 298 K for the following chemical reaction: CO(g) + H2O(l) CO2(g) + H2(g). Show work please! Thank you!!!

    asked by Layla
  149. Chemistry Help Please

    Using standard thermodynamic data from Appendix L of your text, calculate the equilibrium constant at 298 K for the following chemical reaction: CO(g) + H2O(l) CO2(g) + H2(g). Show work please! Thank you!!!

    asked by Layla
  150. Science

    Some animals, but not humans, have an organ called a gizzard located near the top of their digestive tract. This organ is small and can contain small rocks. It also has thick, muscular walls. Based on this physical description, which of the following is

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  151. Chem HELP !!!

    Using a table of standard electrode potentials (as in Appendix M of your text), calculate the standard cell potential, Eo, for: 2 Fe2+(aq) + Cl2(g) 2 Fe3+(aq) + 2 Cl(aq).

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  152. CHEMISTRY

    A voltaic cell is constructed that uses the following reaction and operates at 298 K: 2 Al(s) + 3 Mn^2+(aq) 2 Al^3+(aq) + 3 Mn(s). What is the potential, E, of this cell when [Mn^2+] = 0.10 M and [Al^3+] = 1.5 M?

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  153. Math 117

    Determine the equation of g(x) that results from translating the function f(x) = x2 + 9 upward 10 units. Thank you so much!

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  154. Chemistry

    Gold can be recovered from sea water by re- acting the water with zinc, which is refined from zinc oxide. 2 ZnO(s) + C(s) −→ 2 Zn(s) + CO2(g) 2 Au3+(aq) + 3 Zn(s) −→3 Zn2+(aq) + 2 Au(s) The zinc displaces the gold in the water. What mass of gold

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  155. Physics please help?????

    A 540 g block is released from rest at height h0 above a vertical spring with spring constant k = 320 N/m and negligible mass. The block sticks to the spring and momentarily stops after compressing the spring 19.8 cm. How much work is done (a) by the block

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