Questions Asked on
February 28, 2014

  1. chemistry

    use the Henderson-Hasselbalch equation to calculate the pH of a buffer solution prepared by mixing equal volumes of 0.20 M NaHCO3 and 0.10M Na2CO3.(Ka=5.6x10^-11). how would you prepare NaHCO3-Na2CO3 buffer solution that has the pH of 10.40.

    asked by abc
  2. English

    Identify the underline potions many people use bamboo screens that roll up and down answers are noun clause, adverb clause, subordinate clause, independent clause thanks

    asked by snow
  3. Science

    To form an oxygen molecule (O2), two oxygen atoms share two pairs of electrons. What kind of bond is shown by this? Select all which apply. Ionic Bond Single Bond Double Bond Covalent Bond Triple Bond C and D?

    asked by Anonymous
  4. Chemistry

    What is true about the element francium (Fr, atomic number 87)? Choose all that apply. A) It has seven valence electrons. B) It is likely to form ionic bonds. C) It is in Period 7. D) It is nonmetal. E) It is a metal. I think it is B, C, and E?

    asked by Anonymous
  5. English

    They spotted a pod of killer whales driving along the ocean highway?answers are dangling, misplace, both, misplace d and dangling, no error

    asked by snow
  6. math

    A rope is wound 50 times round a cylinder of radius 25cm how long is the rope [use the value 3.14 for pi]

    asked by iyabo
  7. History

    Which statements about the African slave trade of the 1500s are accurate? Choose all answers that are correct. A. The transatlantic slave trade began when merchants from France bought slaves from the king of Songhai. B. The slave trade began to grow

    asked by BlackTears_Emo
  8. Physics

    Joanne drives her car with a mass of 1000 kg at a speed of 18m/s .Find a road friction force that is need to bring her car to a halt in 12s

    asked by Anonymous
  9. drawing

    MARCO DREW 24 PICTURES HE DREW 1/6 OF THEM IN ART CLASS HOW MANY PICTURES DID MARO DRAW IN ART CLASS

    asked by TAYLOR
  10. Physics

    Two automobiles, each of mass 1000kg , are moving at the same speed, 17m/s , when they collide and stick together. At what speed does the wreckage move if one car was driving north and one east?

    asked by Anonymous
  11. Algebra

    I have a word problem here. A batter hits a fly ball. A scout in the stands makes the following observations. Time (in secs) .75, 1.5, 2, 2.75, 3.25, and 4.75 Height (in feet) 77, 133, 160, 187, 194, and 169 1.What type of function best models this data?

    asked by Student
  12. Social Studies--Check My Answers Please--

    #1. Who was the African American who called the war with Mexico "disgraceful" and "cruel"? a) Santa Ana b) Frederick Douglass ****** c) Davy Crockett d) Sam Huston #2. When Mexico won its independence in 1821, it inherited the New Mexico province from

    asked by Mindy
  13. Science

    A scientist is trying to determine the identity of an element. It is highly reactive in water and forms an ionic bond with chlorine. It is also very shiny. The element is most likely 1. from group 17 2. from group 1 3. from group 15 4. a noble gas 3?

    asked by Anonymous
  14. math(algebra)

    A small college opened in 1999. In the linear model below, x represents the number of years after 1999, and y represents the student population. Interpret the slope. y = 576 + 173x Answer choices are::: A: An additional year of the college being open is

    asked by amber
  15. Math

    Please can you tell me how to find the percentage and probability

    asked by Lily
  16. Statistics

    Two of the biggest soft drink rivals, Pepsi and Coke, are very concerned about their market shares. The pie chart that follows claims that PepsiCo's share of the beverage market is 25%. Assume that this proportion will be close to the probability that a

    asked by Aria
  17. science

    4. a scientist exams a sample of an object from the solar system . there is evidence that the object included ice . the sample most likely comes from a(n) ( 1point ) a . Asteroid b. comet c dwarf planet d meteroroid

    asked by hey
  18. Probability

    Consider 10 independent tosses of a biased coin with the probability of Heads at each toss equal to p , where 0 < p < 1 . 1. Let A be the event that there are 6 Heads in the first 8 tosses. Let B be the event that the 9th toss results in Heads. Find P(B|A)

    asked by qwerty
  19. Probability

    An ordinary deck of playing cards has 4 suits, with 13 cards of each suit. In many games, each of 4 players is dealt 13 cards at random. a. What is the probability that such a hand has each of the following? 1. Exactly 5 spades 2. Which is more probable,

    asked by Anonymous
  20. Math

    an airplane is flying a compass of 340 degrees at 325 mph. A wind is blowing with the bearing 300 degrees at 30 mph. Find the component form of the velocity, and find the actual ground speed and direction of the plane.

    asked by Maddie
  21. Calculus Please help!

    The altitude of a triangle is increasing at a rate of 2500 centimeters/minute while the area of the triangle is increasing at a rate of 3500 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 7000 centimeters

    asked by ALI
  22. Chemistry

    Urea (NH2)2CO is prepared by reacting ammonia with carbon dioxide. The byproduct is water. 637.2g of ammonia are reacted with 787.3 g of carbon dioxide. a. (15 points) Which of the two reactants is a limiting reactant? Show your calculations (including the

    asked by Keni
  23. Biology

    Which of the following is correctly matched with its tissue system? cortex/dermal tissue system cuticle/vascular tissue system phloem/dermal tissue system stele/vascular tissue system>>>> my choosen answer

    asked by Help
  24. math

    A hot dog vendor at the zoo recorded the average temperature and the average number of hot dogs she sold. The equation for the line of best fit for this situation is shown below. Based on the line of best fit, complete the following statements. The

    asked by debby
  25. physics(extension)

    A spiral spring of nature 20cm,has a scale pan hanging freely in its lower end. When an object of mass 40g is placed in the pan,its length becomes 21.8cm.when another object of mass 60g is placed in the pan,the length becomes 22.05cm. Calculate the mass of

    asked by ogboyeb
  26. Analytical Chemistry

    Match the following terms about analytical precipitations to their definitions: A.) Coprecipitation B.) Adsorption C.) Absorption D.) Gathering E.) Masking F.) Digestion G.) Peptization 1.) Inclusion or occlusion of impurities within a crystal. 2.) Binding

    asked by Laura
  27. Precalculus

    Find the sum of all possible values of the constant k such that the graph of the parametric equations x=2+4cos(s) and y=k-4sin(s) intersects the graph of the parametric equations x=1+cos(t) and y=-3+sin(t) at only one point.

    asked by John
  28. Educational Technology and Online Learning

    The field names in a database are also known as_____? Category or column headings The name of a row Individual cells in a database Records

    asked by Anonymous
  29. accounting

    Based on the financial statements for Jackson Enterprises (income statement, statement of owner's equity, and balance sheet) shown below, prepare the following financial ratios. All sales are credit sales. The Accounts Receivable balance on January 1,

    asked by amber
  30. Chemistry

    A cell was constructed with two lead electrodes. The electrolyte compartment is 1 M Pb(NO3)2 (aq). In the other compartment, NaI has been added to a Pb(NO3)2 solution until a yellow precipitate forms and the concentration of I- ions is .5 M. The potential

    asked by Anonymous
  31. Science

    What is true about the element francium (Fr, atomic number 87)? Choose all that apply. A) It has seven valence electrons. B) It is likely to form ionic bonds. C) It is in Period 7. D) It is nonmetal. E) It is a metal. I think it is B, C, and E?

    asked by Anonymous
  32. grammar

    what is the sentence pattern for the following-There is good reason to be thankful.

    asked by ah
  33. Physics!

    How much impulse stops a 46-kg carton sliding at 3.0m/s when it meets a rough surface?

    asked by Anonymous
  34. Math

    . In 1991 the federal minimum wage was $4.25. In 1997 the federal minimum wage was $5.15. Find the rate of change (slope) for the federal minimum wage between 1991 and 1997.*Hint: let 1991 and 1997 be the domain and let $4.25 and $5.15 be the range

    asked by Irene
  35. Science

    2. Which step in the nitrogen cycle is accelerated at the beginning of the eutrophication process? (1 point) A) denitrification B) nitrogen fixation C) producer uptake of nitrogen*** D) consumer decomposition Am I correct?

    asked by Nicole M
  36. Physics

    In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the picture. The tire remains stationary in spite of the three pulls. Alex pulls with force of magnitude 207 N, and Charles pulls with

    asked by Molly
  37. Physics

    A 2.00-kg blob of putty moving at 3.00m/s slams into a 4.00-g blob of putty at rest. Calculate the speed of the two stuck-together blobs of putty immediately after colliding

    asked by Anonymous
  38. Geometry

    A cylindrical water tank has a diameter of 20 feet and a height of 15 feet. How much water is needed to fill the tank?

    asked by anon
  39. HELP!! ASAP!!

    If r = 8 units and x = 8 units, then what is the volume of the cylinder shown above? A. 64 cubic units B. 512 cubic units C. 256 cubic units D. 2,048 cubic units

    asked by Ayriana
  40. science

    2. which of the following happens when a low - mass star runs out of fuel ? choose all that apply . ( 3points ) A ITS CORE BECOMES A WHITE DWARF B ITS OUTER LAYERS FORM a nebula , or vast cloud of gas and dust c its outer layers expand , and the star

    asked by science464645645645!!!!!!!!!!!
  41. (I need alot of help in) Physics

    So in physics lab we did an experiment with a cart with two different masses on a air track (practically eliminating kinetic friction). The track was tilted at 4 degrees. Using 4 photo-gates I got the speed of both gliders and the height at each point. I

    asked by Michelle
  42. Probability

    Statistics show that about 5% of all males are colorblind. Suppose that 20 males are selected at random. What is the probability that at least 4 of the 20 people are colorblind? My answer: I got 1-0.984 The answer key says 0.00257394

    asked by Anonymous
  43. Chemistry

    Carbonates react with acids to form a salt, water and carbon dioxide gas. When 22.1 g of calcium carbonate are reacted with sufficient hydrochloric acid, how many grams of calcium chloride will be produced?

    asked by Doreen
  44. Economics

    Which of the following results from having a nation having conflicting economic goals? A. the nationalizing of some industries B. the need to rank choices in order of importance C. the need for economic safety nets D. government regulation of domestic

    asked by Amy
  45. Math

    What is the volume of a sphere with a radius of 7 cm rounded to the nearest cubic centimeter a) 4,310 cm b) 1,437 cm c) 615 cm d) 359 cm

    asked by Jazmine
  46. Physics

    A planet has a mass of 6.15 × 1023 kg and a radius of 3.25 × 106 m. (a) What is the acceleration due to gravity on this planet? (b) How much would a 79.4-kg person weigh on this planet?

    asked by Elle
  47. physics

    A force of 10.0 newtons acts at an angle 20.0 degrees from vertical. What are the horizontal and vertical components of the force?

    asked by liseath
  48. English

    Identify the underline potions following sentence The children built a sand castle that is underline while their father read the book answers are adverb clause, adjective clause, subordinate clause thanks

    asked by snow
  49. Math

    Forensic scientists use the lengths of certain bones to calculate the height of person. A bone often used is the tibia (t), the bone from the ankle to the knee. A man’s height (h) is determined from the length of this bone using a function defined by the

    asked by Silvio
  50. Algebra

    find the amount of money accumulated if you invested $10,000 at 5.4% interest for 8 years compounded continuously.

    asked by Chake
  51. Physics

    A ship is travelling due east at 10 m/s. What must be the speed of a second ship heading 30 degrees east of north if it is always due north of the first ship?

    asked by Neal
  52. Probability

    Clara Nett is quite good and figures that her probability of playing any one note right is 99%. The solo has 60 notes. a. What is her probability of each of the following? 1. Getting every note right. My answer: 0.547 I am stuck on problems 2-5 because

    asked by Anonymous
  53. physics

    A stone is projected vertically upward with a speed of 30m/s from the top of a tower of height 50m neglecting air resistance. Determine the maximum height reached from the ground

    asked by ogboye
  54. math

    Joe spent 25% of his money on food. He spent 25% of the remainder on drink. He had $9 left. How much money did Joe have to start?

    asked by Kathy
  55. Mechanics

    A light inextensible string, which passes over a fixed smooth peg A, is fastened at one end to a small ring R of mass 0.1kg and at the other end to a particle P of mass 0.3kg. The ring is threaded on a fixed rough vertical wire and the system rests in

    asked by Abdel moniem
  56. Calculus Please help!

    At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 18 knots and ship B is sailing north at 23 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by ALI
  57. Precalculus

    Let G be the graph of the parametric equations x=cos(4t)and y=sin(6t). What is the length of the smallest interval I such that the graph of these equations for all t in I produces the entire graph G?

    asked by John
  58. Algebra 1

    2x-4y=32 2x-8y=48 Find the solution of this system of equations.

    asked by Help me with homework
  59. Algebra

    Hiya! I have a function here: y = x^2 - 4x - 32 I have some questions about it. 1. I think this parabola opens up. Am I correct? Can you explain how you know weather it opens up or down? 2. Can you tell me what the axis of symmetry and the vertex of this

    asked by Student
  60. Physics

    A 1.2-kg blob of putty moving at 4.0m/s slams into a 1.2-kg blob of putty at rest. Calculate the speed of the two stuck-together blobs of putty immediately after colliding. Express your answer to two significant figures and include the appropriate units.

    asked by Kassie K.
  61. English ms sue

    Please check answers! From the words below, supply the words needed to complete the sentences. Tactless, unfathomable, tacit A. While there was a TACIT agreement in the group that Fran's comment to the professor was TACTLESS and perhaps even cruel, the

    asked by Anonymous
  62. biology

    list all the molecules in the process transcription

    asked by anonymous
  63. Precalculus

    A lattice point is a point with integer coordinates. How many lattice points (x,y) with -100 less than or equal to x less than or equal to 100 and -100 less than or equal to y less than or equal to 100 are on the graph of the parametric equations x=30-40

    asked by John
  64. calculus

    Find the asymptote, interval of monotonicity, critical points, the local extreme points, intervals of concavity and inflection point of the following functions. Sketch the graph. a)f(x)=|x2 +x-2|

    asked by Ayk
  65. physics

    Find a relationship between the velocity of a mass falling vertically onto a nail and the depth the nail travels in the wood.

    asked by Punky
  66. English- ms sue

    Please check answers! From the words below, supply the words needed to complete the sentences. Cacophony, carp, heretic, philistines, sullen. A. Although Jenny liked rock music, her parents described it as a great CACOPHONY and insisted she turn it off.

    asked by Anonymous
  67. Statistics

    Assume it is known that the probability of birth is equal in all months. What is the probability that in the STAT class of 120 students, exactly 20 students have their birthdays in either August or September? Solve using (i) the exact Binomial

    asked by Lee
  68. Trig

    Prove the following: 1/(tanØ - secØ ) + 1/(tanØ + secØ) = -2tanØ (1 - sinØ)/(1 + sinØ) = sec^2Ø - 2secØtanØ + tan^2Ø

    asked by McKenna Louise
  69. English

    Identify the participle phase Removing the hook she gently put the fish back into the water?answers are removing the hook, she gently put, put the fish back, into water, thanks

    asked by snow
  70. English

    Hi can you check my topic sentences? Antigone and Creon argue as she fights for the gods and he fights for his beliefs, resulting in the division of the city. Despite of the many warnings he receives, Creon’s discounting of prophecy produces destruction

    asked by annonymous
  71. Help!

    Read this sentence from "Kids in Action: Dalie Jimenez." "She decided to lobby to restore funding.” In which of the following does the word restore have the same meaning as in the sentence above? A. Renee was hired to restore the antique paintings in the

    asked by Annabelle Snider
  72. MATH

    SIMPLIFY. 4 TO THE 4TH POWER TIMES 4 TO THE 2ND POWER.

    asked by amber
  73. physics

    A first capacitor is initially connected to potential source ?. The charged capacitor is then removed from the source and connected to a second initially uncharged capacitor. Determine the final potential across the first capacitor long after the switch is

    asked by CJ
  74. math

    If the interest on a sum is compounded quarterly, which of the following is necessarily true? a) The effective rate of interest is same for every year. b) The ratio of interest for the (m + 1) th year to m th year will be same as the ratio of interest for

    asked by Tarun
  75. statistics

    A survey among US adults of their favorite toppings on a cheese pizza reported that 43% favored pepperoni, 14% favored mushrooms, and 6% favored both pepperoni and mushrooms. What is the probability that a random adult favored pepperoni or mushrooms on

    asked by Anonymous
  76. phi208 Ethics and moral reasoning

    What are some relativistic beliefs that you have or that you find in society? What are those ethical beliefs and how do people justify those beliefs? Using the articles from Mary Midgley and James Rachels, present a critique of those relativistic beliefs.

    asked by lo
  77. Social Studies

    #1. Who was the backwoodsman who lost his life at the Alamo? a.) Sam Houston b.) Davy Crockett ****** c.) John Tyler d.) Stephen F. Austin #2. What policies contributed to tensions between Texas and Mexico? a.) The Mexican government limited immigration to

    asked by Mindy
  78. math

    ʃ ( tanx + cotx )² dx

    asked by zainab
  79. math

    There exist irrational numbers a and b so that a^b is rational. look at the numbers √2^√2 and (√2^√2)^√2 a) use similar idea to prove that there exists a rational number a and an irrational number b so that a^b is irrational b) prove that if

    asked by excel
  80. operating system

    What is the difference between MsDOS and Ms WINDOWS?

    asked by Anonymous
  81. hardware

    Difference between disk operating system and windows operating system?

    asked by Chandan kumar
  82. Art History

    The question says "Review what you learned about Stonehenge and the cave paintings that were found in Spain by the two boys. Which is a greater achievement of these time periods?" Who are the two boys? I can't seem to find anything about them in my

    asked by Kylee
  83. accounting

    A light truck is purchased on January 1 at a cost of $27,000. It is expected to serve for eight years and have a salvage value of $3,000. Calculate the depreciation expense for the first and third years of the truck's life using the following methods. If

    asked by amber
  84. Algebra

    Two positive numbers differ by 11. When the larger number is divided by the smaller, the quotient is 2 and the remainder is 4. what are the numbers

    asked by Jay
  85. Current World History

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

    asked by Alex
  86. Calculus Please help!

    Gravel is being dumped from a conveyor belt at a rate of 30 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always the same. How fast is the height of the pile increasing when the pile is 24

    asked by ALI
  87. English

    There isn't (any,no) newspaper in that little town. I think any There wasn't (anybody,nobody)in the house. I think anybody Please don't ask him (any,no)questions. I think any I haven't solved(any,none) of my problems. I think any

    asked by Anonymous
  88. thermodinamics

    2. A sample of an ideal gas underwent an expansion against a constant external pressure of 1.0 bar from 1.0 m3, 20.0 bar, and 273 K to 100.0 m3, 1.0 bar, and 273 K. What is the work done by the system on the surroundings

    asked by dhaval
  89. English- ms sue

    Please check answers! From the words below, supply the words needed to complete the sentences. Gullible, callous, perfidy, gruff, haphazard, peripheral, succinct. A. While some people thought joe had been GULLIBLE to fall for that old trick, others labeled

    asked by Anonymous
  90. Math:Probability

    The probability of having homework over the weekend in math is 0.9,history is 0.6, and Spanish is 0.75. 1. What is the probability of having exactly one class that gives homework? Is this a nCx problem? I got an illogical answer: 10.54=1054% THIS IS NOT

    asked by Anonymous
  91. Calculus Please help!

    The linearization at a=0 to sqrt(1+2x) is A+Bx where A is____ and where B is _____? A=? B=? Ty

    asked by ALI
  92. Trig

    Verify the given equations: ____1______ + ____1_______ = -2 tanθ tanθ – secθ tanθ + secθ 1 – sinθ = sec2θ – 2 secθ tan θ + tan2θ 1 + sinθ

    asked by McKenna Louise
  93. Algebra 2 Help

    1.) Solve for x. 2x(x - 12) = -40 2.) Solve for x. 3x2 + 2x = 12 - 7x 3.) Simplify the expression. 8sqrt[-63] 4.) Find the absolute value of the complex number. Abs Val [7 + 24i] 5.) Simplify the expression. [4 - 7i] + [2 + 3i] Thank you so much!! :)

    asked by Chloe
  94. maths literacy,geography,lifescience,,agricultural

    which career can i pick with this subjcts

    asked by sheila
  95. science

    Explain the difference between the ovarian cycle and the menstrual cycle ??

    asked by Iqbal
  96. science

    3.what hormone stimulates the thickening of the endometrial tissue? 4.Describes what occurs to the follicle around day 13 and 14 ? what is this process called ?

    asked by Iqbal
  97. science

    .What happens to the endometrial tissue if the egg does not get fertilized ?

    asked by Iqbal
  98. physics

    A boy,who weighs 2N was carried by his father,on his shoulder during a football match.if the match last for two hours,how much work is done by the father?

    asked by ogboyeb
  99. Math

    A shirt originally cost $54.04, but it is on sale for $43.23. What is the percentage decrease of the price of the shirt? If necessary, round to the nearest percent.

    asked by Anonymous person
  100. English

    She hasn't said (anything, nothing) about her accident. I think anything Hardly (anything,nothing) pleases him. I think anything There aren't (any,no) pears in the supermarket. I think any

    asked by Anonymous
  101. English

    We haven't(any,no) more packages to wrap. I think any Wasn't there(anyone,no one) at home? I think anyone My dag has never harmed (anybody,nobody.) I think anybody They seldom have (anyone,no one) abasent from their meeting. I think anybody There

    asked by Anonymous
  102. statistics

    When calculating a confidence interval for the difference between two means, what information are you gaining? The means are from both same population and different? Thank you.

    asked by Jamie
  103. Math

    The attendace at the harmony school carnival has shown a range of 200 people during the years 2008 through 2011.Which graph could show the carnival attendance correctly?

    asked by Anonymous
  104. Statistics

    When calculating a confidence interval for the difference between two means, what information are one gaining?

    asked by jamie
  105. Math

    A trucker on the interstate travels 32 miles in 30 minutes. At this rate, how far will the truck travel in 4.5 hours?

    asked by Carlotta
  106. Math

    Assume you are working on a house the length of the house is 50 feet, the width is 30 feet, and from the ground to the gable is 10 feet. The height of the triangle prism on top is 6.5 feet. If you are going to shingle the roof of this house, how many

    asked by Logan
  107. Physics

    A rock is thrown horizontally from a bridge hits the water below 30 meter away in the horizontal direction. If the rock was in the air 2seconds, how tall is the bridge?

    asked by Anonymous
  108. chemistry

    what is the disadvantage of nh4oh

    asked by pacot jamel
  109. Science please help

    what do we mean when we say that atoms bond? What particles in an atom are responsible for bonding? Table sugar or sucrose is a compound that has the chemical formula C12 H22 and O11 would another chemical made of the same elements still be considered to

    asked by Anonymous
  110. Pre-Calculus

    Phil Dawson is a professional place kicker for the Cleveland Browns. On average, he kicks the ball at a 41 degree angle with an initial speed of 70 feet per second. For future reference, goal posts are 10 feet high in the NFL. a) Write parametric equations

    asked by Alexis
  111. Math

    Use roster notation to create and write two proper subsets of your original set. 3. Do the following and write your answers in roster notation. •Find the union of the sets. •Find the intersection of the sets. •Find the complement of each of the sets.

    asked by Heather
  112. remainder theorem and factor theorem

    X^3+4x^2a-6xa^2+7a^3÷3x-a

    asked by dorcas
  113. science

    1.Approximately how long (in days)is the female reproductive cycle?? Describe the structure that is 2.illustrated at the bottom of the diagram .What is it called ?

    asked by Iqbal
  114. physics

    I'm driving along at a constant speed in my 3 meter long car when I notice that I am accidentally driving through a red light. If the rear of my car passes under the light 0.3 seconds after the front of my car, how fast am I driving in m/s?

    asked by yogesh
  115. chemistry

    Given an approximate wavenumber of 2000cm-1 for CN, calculate the approximate force constant for a single bond. i used the formula v= (1/2(pi)c) * sqrt(k/u) where pi is 3.14, c is the speed of light, k is the force constant and u=mu, which is the reduced

    asked by wavenumbers & force constant
  116. math

    simplfy 3 root 3/8

    asked by winston
  117. Chemistry

    The values on the label of a bottle of nitric acid are specific gravity 1.42 and assay 60%. Use these values to determine the molarity of the solution. Show your work.

    asked by Kristy
  118. Calc help

    lim x-> infinity (7x^(5/3)-2x^(1/3)+6)/(-2x^(8/5)-5x+square root(x)) I tried every possible way to find the answer But I couldn't find it. Can someone help me with this question? Step by step please!! Thank you!

    asked by Kesha
  119. English

    Prior knowledge of what subject would help the reader understand "Rosa Parks: My Story"? A.segregation laws

    asked by Annabelle Snider
  120. Math (Statistics)

    The SAT scores of a certain population of students are approximately normally distributed with a mean and standard deviation of 1000 and 200 points, respectively. The probability that a student selected at random from the population has an SAT score

    asked by Nakia Speaks
  121. English

    I haven't done(anything,nothing) to offend Greg. I think anything We don't have (any,no)match for the opposing team. I think any Our team wasn't (any,no)match for the opposing team. I think any

    asked by Anonymous
  122. English

    I couldn't hear (anything,nothing) because of the airplane's noise. I think anything The salesperson didn't have (any,no) samples on display. I think any I haven't (any,no) money with me. I think any Hasn't he cooked (any,none) of the pasta? I think any

    asked by Anonymous
  123. Math 30-2

    There are 7 different books on a shelf. How many selections of more than 4 books can be made?

    asked by Ashley
  124. Calc Help Please

    I did some of them so can you help me with the rest. Consider the piecewise functon f(x) = (4x^2-3)/(3x^2-15) x-2^+ f(x)= 0 f(-2)= 0 f(4) = 5 list the values of x for which f(x) is not continues= ???????

    asked by Tim
  125. math(algebra)

    Find the distance between A and B. A= the coordinates ( 6, 1) B= the coordinates ( 2, -3) answer choices are: A. 8 units B. 16 units C. 2 times the square root of 2 units D. 4 times the square root of 2 units

    asked by Ayriana
  126. STEVE!! CAN YOU PLEASE TELL ME HOW U GOT CHOICE D?

    Find the distance between A and B. A= the coordinates ( 6, 1) B= the coordinates ( 2, -3) answer choices are: A. 8 units B. 16 units C. 2 times the square root of 2 units D. 4 times the square root of 2 units

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  127. Science 3 quick questions

    what do we mean when we say that atoms bond? What particles in an atom are responsible for bonding? Table sugar or sucrose is a compound that has the chemical formula C12 H22 and O11 would another chemical made of the same elements still be considered to

    asked by Anonymous
  128. Science

    What would happen to an electric motor if the direction of the electric current in the armature did not change directions? Explain. I have read my textbook and googled it and I dint understand what would happen. Please help. Thank you

    asked by Cherie
  129. Algebra

    1. Parent Quadratic Equation 2. Coordinate of the vertex 3. quadratic formula A. -b/2a B. y = 2x C.b^2 - 4ac D. y = a(x - h)^2 + k E. x = -b +/- (square root of) b^2 -4ac/2a I think the answers are: 1. B 2. C 3. E Are these correct? Thanks!

    asked by Student
  130. English- ms sue

    Can you check my analogies? 1. Observatory: telescope:: A. Lavatory: hands B. book: idea C. Theory: scientist D. Letter: alphabet Is it b? 2. Twilight: dusk:: A. Dinner:lunch B. marriage: children C. Texture:touch D. Dew: morning Is it c? 3. Scene:act:: A.

    asked by Anonymous
  131. Algebra 2

    1.) Solve for x. 2x(x - 12) = -40 2.) Solve for x. 3x2 + 2x = 12 - 7x 3.) Simplify the expression. 8sqrt[-63] 4.) Find the absolute value of the complex number. Abs Val [7 + 24i] 5.) Simplify the expression. [4 - 7i] + [2 + 3i] Thank you so much!! :)

    asked by Chloe
  132. Algebra 2 Help!

    1.) Simplify the expression. [sqrt3 + 2i][sqrt3 - 2i] 2.) Solve using the square root property. (y - 4)2 = -18 3.) Rewrite the the function in vertex form. You may use completing the square or an alternate method. f(x) = 5x2 - 10x + 3 4.) Use the

    asked by Lori
  133. SCIENCE

    Will someone please help me find information on facial reconstruction?

    asked by ANGELA
  134. general

    Does anyone have any ideas on masquerade? Pupils are 15 years old and there are 26 of them.They have to dress up and present themselves to the jury. What can they do? Maybe dress up as famous people and perform an act?

    asked by zerta
  135. science

    the astronauts can live for long periods of time in a space station? my answers is yes.

    asked by Anonymous
  136. Math

    The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells the dinners at an 80% markup based on cost. They decided

    asked by jnet
  137. Calculus Please help!

    The differential of the function y=(x^2+6)^3 is dy=______dx. When x=2 and dx=0.05, the differential dy=_______? A) dy=______dx? B) the differential dy=_______?

    asked by ALI
  138. math

    Two numbers have a product of 3 and 1/5 and a sum of 3 and 3/5 what are the numbers

    asked by teresa
  139. math

    i need help with this problem 2ã20x + 3ã5x

    asked by emilys mom
  140. math

    I need help with this 5ã3+2ã75

    asked by emilys mom
  141. Pre-Calculus

    Jake serves a volleyball with an initial velocity of 32 feet per second from 4.5 feet above the ground at an angle 0f 35 degrees. a) Write parametric equations to model the situation. b) How far will the ball travel( if it hits the ground)show work

    asked by Alexis
  142. Pre-Calculus

    Write Parametric equations of -3x+1/2y=2

    asked by Alexis
  143. science

    Which statement is true regarding the cost of climate change adaptation discussed in the text? (Points : 1

    asked by Simone
  144. math

    elp please (ã6+ã2) (ã6-ã2)

    asked by emilys mom
  145. MATH

    HELP PLEASE (ã6+ã2) (ã6-ã2)

    asked by emilys mom
  146. Living Environment

    Generally speaking,What is the female reproductive cycle??

    asked by Iqbal
  147. Algebra 1 (Reiny)

    Factor each polynomial by grouping. Check your answer. 1. 2r^2 - 6r + 12 - 4r

    asked by Anonymous
  148. Calculus Help

    Use f(x)= 1/(square root(x)+1) to answer the following; -- Use the difference quotient f'(x)=lim z->x (f(x)-f(z))/ (x-z) to find f'(x)! Please show steps!!! Thank you!!!

    asked by Mello
  149. English

    Ms Sue I think it it into water

    asked by snow
  150. Science

    What three things can be done to increase the speed and power of a St.Louis electric motor?

    asked by Cherie
  151. Geometry

    What is the height of a cylinder with a volume of 384π cubic inches and a radius of 8 inches? Round to the nearest tenth of an inch.

    asked by anon
  152. Maths

    The diameter of wheel is 28 cms .how many revolutions will it make in moving 1100 m

    asked by Swarada
  153. math

    need help 3x^2sqrt(5x) * 3sqart(3x^3)

    asked by winston
  154. Algebra - Functions

    Find the domain: a) [sqrt(x+3)]+[5x^2-180] b) [sqrt(x+3)]/[5x^2-180] c) (8x+9)(9x+8) d) (8x+9)/(9x+8) e) [sqrt(x+2)](5x^2-245) f) [sqrt(x+2)]/(5x^2-245)

    asked by Gregory
  155. English

    Which is the correct word The suspect wouldn't admit (anything, nothing.) I think anything I don't know (any, none) of the people on this bus. I think any Rosa couldn't do (anything, nothing) about changing the time of our program. I think anything.

    asked by Anonymous
  156. English

    We didn't have (any, no)printed programs. I think any I don't want (any,no) cereal for breakfast this morning. I think any You must no speak to (anyone, no one)about our surprise party plans. I think anyone

    asked by Anonymous
  157. English

    There isn't (any,no) ink in this pen. I think any Didn't you make (any,no) copies for the other people? I think any I haven't had (any,no) time to repair the lawn mower. I think any

    asked by Anonymous