Questions Asked on
March 1, 2011

  1. chemistry

    What are the differences between ionic bonds and covalent bonds?

    asked by Jackie
  2. bca

    ____ is the code of acceptable behaviors users should follow while on the Internet; that is, it is the conduct expected of individuals while online.

    asked by greg
  3. Francais

    Je pense que vous cachiez quelque chose dans tes estomacs: is the subjunctive in cachiez correct? (I think that you are hiding something in your stomachs).

    asked by Taylor
  4. chemistry

    why is hydrogen bonding inly possible with hydrogen?

    asked by Jackie
  5. geometry

    Find, to the nearest tenth of a centimeter, the length of a diagonal of a square if the measure of one side is 8.0 centimeters.

    asked by Timothy
  6. Science

    What can you conclude about the reverse change Cr2O7 to 2 CrO4 and its dependence on hydroxide ions? Produce a balanced equation bu adding the proper number of OH- ions and H2O molecules to the appropriate sides of the equation.

    asked by Carlina
  7. Algebra 2

    I am totally lost! (3x^4--8x^2 -3x-3) / (x^2-3)

    asked by Paige
  8. Physics : Please Help Me!!!

    In a velocity vs. time graph, the graph illustrates a triangle shape. A. why might a smart student say the object reverses direction? B. why might a smart student say the object doesn't reverse direction? C. Does the object reverse direction? Explain why.

    asked by Andrea
  9. statistics

    The distribution of the heights of men in the U.S. is normally distributed with a mean of 70 inches and a standard deviation of 5 inches. a) What is the probability of an american male being less than 60 inches tall? b) What is the probability of an

    asked by Maddie Liguori
  10. statistics

    The income of college students is normally distributed with a mean income per year is $12,000 and a standard deviation of $6,000. a)If we randomly sample 25 college students, what is the probability that the average income of our sample is less than

    asked by Maddie Liguori
  11. precalculas

    the amount of bacteria in a petri dish increased by a percent change of 12% each hour over a period of 15 hours. a. find the growth factor for 1 hour? b. by what total percent did the bacteria change during this 15- hour time period.? c. how long will it

    asked by katrina
  12. Statistics

    In the harper valley subdivision, 79% of the houses have a deck while 49% of the houses have both a deck and a garage. Find the probability that the home has a garage given that it has a deck

    asked by Sherry
  13. sociology

    The general trend of American's attitudes toward the unmarried had been from an attitude of _________ in the 1950s to and attitude of _________ in the 2000s

    asked by ashley
  14. sociology

    The general trend of American's attitudes toward the unmarried had been from an attitude of _________ in the 1950s to and attitude of _________ in the 2000s

    asked by ashley
  15. statistics

    A supplier of plastic pellets claims that when the plastic is pressed into wafers of uniform thickness, they will have a mean breaking strength of 165 newtons and a standard deviation of 5 newtons. An engineer at the company randomly selects wafers from 12

    asked by Maddie Liguori
  16. accounting

    I need help with Intermediate Accounting 303 on-line

    asked by Candace
  17. Chem

    If you prepared a solution by adding 0.05mL (1drop) of 0.5M HCL to 5 x 10^7 mL of "pure" water. Calc the resultant PH. The answer isn't ph= 9.3. you have to add all the hydronium ions from all sources... but how ?

    asked by Jake
  18. SQL

    Explain why the following command would create an error, and what changes could be made to fix the error. SELECT V_CODE, SUM(P_QOH) FROM PRODUCT;

    asked by ben
  19. hum176

    can u help me get a better understanding of why freedom of speech allows a variety of pop culture media to be released.

    asked by Kalei
  20. chemistry

    why is hydrogen bonding only possible with hydrogen?

    asked by Jackie
  21. Physics

    If an 80-kg sprinter can accelerate from a standing start to a speed of 10 m/s in 3 s, what average power is generated?

    asked by Cher
  22. geometry

    Basic Geometry 1. Find the perimeter of a rectangle 19 cm long by 27.8 cm wide. 2. In triangle ABC, angle A = 47°, and angle B = 8°. Find angle C. 3. Find the perimeter of a triangle with sides of length 28 cm, 47 cm and 19 cm. 4. In triangle FGH, angle

    asked by shirley
  23. Math - Arithmetic

    Qn: Given that 3, b, c and 18 are an Arithmetic Progression. Find the value of b and c.

    asked by Student55
  24. sociology

    The general trend of American's attitudes toward the unmarried has been from an attitude of _____ in the 1950s to an attitude of ______ in the 2000s A.) Non-acceptance; acceptance B.) Neutrality; non-acceptance C.) Non-acceptance; neutrality D.)

    asked by ashley
  25. French - Help :(

    Hi all. I'm trying to write a paragraph in french. These are my instructions: Décrivez vos activités habituelles pendant les vacances dernières en utilisant au moins sex verbes réfléchis à l'imparfait. This is what I want to say: Last winter, I did

    asked by K
  26. math

    a rectangle has length which is twice the width. if the diagonal is the 5 times the square root of 5 meters long, find the perimeter of the rectangle.

    asked by ed
  27. computer science

    Opera Mobile is an example of: a smartphone. a wireless ISP. SmartMedia. a microbrowser.

    asked by Anne
  28. Physics

    In a velocity vs. time graph, the graph illustrates a triangle shape. A. why might a smart student say the object reverses direction? B. why might a smart student say the object doesn't reverse direction? C. Does the object reverse direction? Explain why.

    asked by Andrea
  29. calculus

    Find the volume of the solid whose base is the region bounded between the curve y=sec x and the x-axis from x=pi/4 to x=pi/3 and whose cross sections taken perpendicular to the x-axis are squares.

    asked by Mark
  30. English

    When is Diego's school's anniversary? 1. It will be next month. 2. It is next month. (Which answer is correct? Are both correct? Which one is commonly used?)

    asked by rfvv
  31. French

    I think that you are hiding something in your stomachs. Je pense que vous cachiez quelque chose dans tes estomacs. ^did I use the subjunctive correctly?

    asked by Eleanor
  32. trigonometry repost .

    This is an outline that i have to use to find the solution of the question. It involves logarithms and half-angle formulas.I have worked though it but got stuck on some parts. I'd like if you look over my work. solve the triangle for which given parts are

    asked by Anon
  33. physics

    Surprisingly, very few athletes can jump more than 2.0 ft (0.62 m) straight up. Use d = 1/2 gt2 and solve for the time one spends moving upward in a 2.0 foot vertical jump. Then double it for the "hang-time" -- the time one's feet are off the ground.

    asked by claire
  34. geography

    Can you check my answer. What is the capital of the nation that is located at the southern tip of Africa? My answer is Tshwane(Pretoria) Is this correct?

    asked by Reed
  35. chemistry

    100ml solution made up 1.0M NH3 and (NH4)2SO4 have been added with 100ml of 0.1 HCl. how many moles are present in the solution before and after? given the pH of the solution is 9.26

    asked by gwen
  36. maths

    x^2-7x = 0 substitue x=7 into the equatiopn and explain why this shows that x=7 is the solution. ok so i do this: if x=7 then the equation becomes 7^2-49=0 7^2=49 49-49=0 so x=7 is correct (is that explanation enough?) now i have to write out a complete

    asked by Marian
  37. math

    Tom wrote a two-digit number.He multiplied it by 3, added 18, and divided by 8. His final answer was 9. What number did Tom write?

    asked by Anonymous
  38. German

    which preposition is most suitable 1)Mraias Zimmer ist______ Dritten Stock 2)Die Wohnung ist_____einem Hochhaus ------------------------------------------ a)Im Kleiderschrank _____meine Kleider(HANGS)

    asked by vera
  39. Math

    Solve: 3x-2(3x-1)+4(x+1)=0

    asked by Rivan
  40. physics

    give me an acrostic name of ma.lani aguirre

    asked by charlene
  41. science

    what is the formula for calcium and oxygen

    asked by isaiah
  42. grammar

    'I might' a thought of that closet. Correct this sentence

    asked by larsong
  43. chem

    When varsol and iodine in potassium iodide aqueous solution is mixed, two phases form. What are the colours in each of the 2 phases when 2ml of I2/KI aqueous solution plus 2 ml of varsol are mixed in a test tube? What are the colours in each of the 2

    asked by crystal
  44. radiant readers book

    correct the following sentences- 1) what you been doing there? 2) but old fools is the biggest fools there is. 3)i ain't doing my duty by that boy 4)it's mighty hard to make him work saturdays,when all the boys is having holiday. 5)'Tom, it was warm in

    asked by larsong
  45. bio

    what are the two structural components of a chromosome

    asked by mary
  46. Inter algebra

    help, I am stuck on this one. -ã(7c)^2

    asked by Jackster
  47. math

    the function has a real zero in the given interval. approximate this solution correct to two decimal places. f(x)=x^4-x^3-7x^2+5x+10; (2,3)

    asked by fast80us
  48. chemistry

    Write a balanced chemical equation for the overall cell reaction represented as: a) Ag(s)|Ag^+(aq)||Sn^4+(aq), Sn^2+(aq)|Pt(s) b) Al(s)|Al^3+(aq)||Cu^2+(aq)|Cu(s) c) Pt(s)|Fe^2+(aq), Fe^3+(aq)||MnO4^-(aq),Mn^2+(aq)|Pt(s)

    asked by Jazmin
  49. Biology

    The trachea is ___________ to the lungs Toes are _______________to the shoulders Esophagus is _____________ to trachea Pinna is ______________ to tail Liver is ______________ to stomach Options are Anterior, Posterior, dorsal, ventral, lateral, median,

    asked by Jude
  50. math, Please Helppp!!!!!!!! Lost paper!

    I lost my paper for the Math Riddle Pizazz page 167 about solving systems of equations and I no longer have the problems. (It is the "did you hear about the farmer who fed his cows birdseed.." page) What are the math problems for it?!?

    asked by Caroline
  51. pre-calculus

    please help me with thisone thanks solve the inequality algebraically. Express the solution in interval notation. (x-8)^2/x^2-36 > 0

    asked by dave
  52. math

    There are nine equally likely outcomes if you spin this spinner twice (x,y,z) 1) Three of the 9 equally likely outcomes are xx,yy and zz. List the other six outcomes. 2) If you spin the spinner three times, what is the probability of getting yyy? Explain

    asked by stacy
  53. Physics

    An ideal transformer is needed to step the voltage down from 400V to 115V. The primary has 400 turns. How many turns would be necessary on the secondary side?

    asked by Crystal
  54. SraJMcGin

    Thanks a lot for your previous help with my assignments, and I have Windows. I don't know how to make accent marks:\

    asked by Selena
  55. Chemistry

    If you react 55g of hydrazine and 55g of oxygen gas, what is the maximum moles of nitrogen dioxide gas that can be made and what is the limiting reagent?

    asked by Melanie
  56. Math

    Confused on permutation or combination on this question: A VISA credit card has a first digit of 4 followed by 15 other digits. How many different VISA accounts does this allow? I know the formulas but I am having a hard time determining which one to use.

    asked by marco
  57. physics

    How much exertion in pounds does it take a woman who weighs 115 pounds to push a cart that weighs 50 pounds?

    asked by Mike
  58. Spanish-Please check my answers

    ¿Cuenta en español? Si, yo cuento en español. ¿Puedes contar en francés? No, no puedo contar en francés.

    asked by Shiela
  59. math

    what is dimensions of an acre? and size of football field?

    asked by Kaleb
  60. science

    when a liquid wax is turned into a solid is it a chemical reaction?

    asked by Anonymous
  61. chem

    under what condition would all three hydrogen be removed the H3PO4?

    asked by Anonymous
  62. physicssssss

    In a cargo plane, the center of gravity must be between the front and rear landing gears in order to maintain a torque equilibrium. The front landing gears help counteract the torque provided by the rear landing gears in this case. A jet transport has a

    asked by hy
  63. physiC

    A uniform door (0.81 m wide and 2.1 m high) weighs 150 N and is hung on two hinges that fasten the long left side of the door to a vertical wall. The hinges are 1.9 m apart. Assume that the lower hinge bears all the weight of the door. Determine the

    asked by lina
  64. GERMAN

    Are the wechsel articles always dativ? -------------------------------------- 1)Die Zigaretten liegen ____ Boden(ON THE) 2)Mein Hemd steht____Bett(near the) 3)Sein Fahrrad ist____Fenster 4)Onkel liegt ______Sofa(on the) ------------------------------

    asked by vera
  65. math-163

    for the polynomial, list each real zero and its multiplicity. determine whether the graph crosses or touches the x-axis at each x-intercept. f(x)=1/2x^4(x^2-5)(x+1)

    asked by albert
  66. Chemistry

    HELP! I need to know if I am getting the right equation for the oxidation reaction of cyclohexene and potassium permanganate? I think it would be: C6H10+KMNO4 would become C6H10(OH) + MNO2 + K

    asked by Lizzy
  67. statistics

    there are 80 students in a math class.20% of the students in the class scored above 50 marks in the test. what is the average of those students who scored below 50 marks

    asked by chisom
  68. Algebra

    Explain the advantages of the vertical and horizontal methods of multiplying a binomial and a trinomial.

    asked by Marlayne
  69. math163

    Please i need all the process.. thank you.. for the polynomial, list each real zero and its multiplicity. determine whether the graph crosses or touches the x-axis at each x-intercept. f(x)=1/2x^4(x^2-5)(x+1)

    asked by albert
  70. Algebra

    Can you write a binomial in standard form with a degree of 0? Can you write a binomial with a degree of 3? Explain.

    asked by Patrick
  71. physics

    formulation of hypothesis for the prepation of a standard solution of oxalic acid with a concentration of 0.05mol.dm3. very desperate

    asked by anonymous
  72. cambo

    180 ft long board is cut into 3 pieces. The second piece of board is twice as long as the first. The third piece of board is six times as long as the first. What is the length of the first piece of the board?

    asked by bob
  73. IT WEB SYSTEMS

    Provide a real-life application in which you manipulate data in string or array format. Describe the situation, manipulation process, and data result.

    asked by SURFERDF
  74. IT/210

    Design a program that models the worms behavior in the following scenario: A worm is moving toward an apple. Each time it moves, the worm cuts the distance between itself and the apple by its own body length until the worm is close enough to enter the

    asked by Kamari Davis
  75. physics

    if |A|=2, |B| =4, |C| =5, find the vector sum a+b+c in ordered pair notation, also find the angle theta

    asked by vicki
  76. physics

    if |A|=2, |B| =4, |C| =5, find the vector sum a+b+c in ordered pair notation, also find the angle theta

    asked by vicki
  77. IT/210

    Assignment: Currency Conversion Design · Complete the hierarchy chart in Appendix H and the flowcharts in Appendix I, based on the Currency Conversion requirements and Input-Process-Output table you generated in Week Two. · Develop the pseudocode for the

    asked by Kamari Davis
  78. physics

    A merry-go-round is stationary. A dog is running on the ground just outside its circumference, moving with a constant angular speed of 0.705 rad/s. The dog does not change his pace when he sees what he has been looking for: a bone resting on the

    asked by Anonymous
  79. algebra

    Find the functional values f(-2), f(0), and f(1) for the function. ƒ(x) = X²- 1

    asked by bianca
  80. physics

    A merry-go-round starts from rest and accelerates uniformly over 29.0 s to a final angular velocity of 5.35 rev/min. (a) Find the maximum linear speed of a person sitting on the merry-go-round 4.50 m from the center. (b) Find the person's maximum radial

    asked by Anonymous
  81. Physics

    The force on an object is described as a function of time equation: F(t) = 3t^2+7t What is the impulse delievered by the force over a period of time from 0 to 5.0s? What is the average force exerted on an object over this time period? If the object has a

    asked by melissa
  82. Algebra

    I am stuck in exponential growth and decay. Here is an example. Can someone tell me how to do this step-by-step please? Here it is... The population of Mexico has been increasing at an annual rate of 1.7%. If the population of Mexico was 100,350,000 in the

    asked by Miss Trouble :)
  83. physics

    A baseball mass of 150.0g, is thrown by the pitcher toward the home plate with a velocity of 45.0 m/s. it is hit back at the pitcher with a velocity of 60.0 m/s, what is the average force on the bat, if the ball and bat are in contat for a time of 100.0

    asked by candice
  84. algebra

    Find the functional values f(-2), f(0), and f(1) for the function. ƒ(x) = x² - 1

    asked by bianca, pleeease help i'm lost
  85. math 117

    multiply and simplify 10b^6/3r^2 x 9r^7/100b

    asked by Jessicaa
  86. math

    Two planes depart from the same airport at the same time. One hour later one of the planes is 480 miles due north of the airport and the other plane is 550 miles due east of the airport. At that time, what is the distance between the two planes?

    asked by Lo
  87. math

    Chris eats 3 slices of a pizza that is cut into 8 equal slices. What percentage of the pizza does he eat?

    asked by jackie
  88. Statistics

    The probability that a football game will go into overtime is 20%. What is the probability that two of three football games will go to into overtime? A) 0.384 B) 0.2 C) 0.04 D) 0.096

    asked by Stephanie
  89. Statistics

    The probability that a house in an urban area will develop a leak is 5%. If 82 houses are randomly selected, what is the probability that none of the houses will develop a leak? A) 0.050 B) 0.001 C) 0.000 D) 0.015

    asked by megan
  90. Spanish-7th grade-Please check my answers

    Could someone check these please?I had place a possessive adjective in place of el 1. El hermano de Juan y Pedro se llama Bret Answer: Su hermano se llama Bret 2.Replace los with possessive Los hermanos de Paco y Linda se llama Santiago y Jose Answer: Sus

    asked by Melinda
  91. science

    After 0.6523 g of CoCl_{2} \cdot 6H_{2}O is heated, the residue has a mass of 0.3423 g. Calculate the % H2O in the hydrate.

    asked by Anonymous
  92. Business 475

    The general term for market structures that fall somewhere in-between monopoly and perfect competition is?

    asked by Anonymous
  93. Physics

    Please help! suppose you have some 20 degrees celsius water and some boiling water. How much of each would you use to make 4 kilograms of water at 45 degrees celsuis?

    asked by Amanda
  94. calculus

    Please help with this. I submitted it below but no one responded. I need the first derivative of f(x)=4(x+ then the square root to include (x(8-x)), then close bracket.And then the second derivative of this to show by the second derivative test that it is

    asked by Frank
  95. mth

    PLEASE I NEED HELPPPPP.. i have many exercises like that, just want to know where to start thanks. f(x)= x^3+2x^2-x-2 / x^2+x-6 find: 1. domain 2. symmetry or not 3. determine if f(x)is: a)in lowest trem b)proper/improper 4. x-intercepts, y-intercepts 5.

    asked by leticia
  96. math

    The opposite angles of a parallelogram are congruent. The adjacent angles are supplementary. If angle X measures 110 degrees, then what are the measures of angle Y and angle Z?

    asked by Ian
  97. Chemistry

    80.0 grams of KBr is mixed with sufficient water to prepare 1865 mL of solution. This solution is then mixed with 46.3 mL of 0.425 M KCl solution. 12 mL of this mixture is subsequently added to 61.0 mL of distilled water. Calculate the molarity of K+ ions

    asked by Christian
  98. Physics

    A bullet of mass 3.2 g strikes a ballistic pendulum of mass 3.6 kg. The center of mass of the pendulum rises a vertical distance of 13 cm. Assuming that the bullet remains embedded in the pendulum, calculate the bullet's initial speed.

    asked by RD
  99. math

    11/24 admission for top selling movies, which had admission of 205 millions

    asked by Anonymous
  100. rounding fractions

    Round 10 2/3 to the nearest whole number?

    asked by mia
  101. advocacy and mediation

    what are the 10 most critical issues challenging human services agencies today?

    asked by nita
  102. geometry

    what is the angle of inclination for 7x + 3y = 9?

    asked by leina
  103. economics today

    Suppose the economy has been experiencing zero inflation and five percent unemployment for several years. The government decides to lower the unemployment percentage by generating some inflation. You need to do the following:

    asked by Anonymous
  104. physics

    At a time when mining asteroids has become feasible, astronauts have connected a line between their 3740-kg space tug and a 6500-kg asteroid. They pull on the asteroid with a force of 470 N. Initially the tug and the asteroid are at rest, 480 m apart. How

    asked by lizz
  105. math

    find the length width and area of an object where the perimeter is fixed at 20 meters

    asked by tahj
  106. chemistry

    You have a 12.01 g sample of carbon. The average mass of a carbon atoms is 1.994 x 1023 g. How many carbon atoms are in the sample?

    asked by Sam
  107. Pre-Algebra: HELP PLEASE

    I'm really bad at these, can someone help me PLEASE? 1. Name the property shown by the statement: 9x + 0 = 9x a. Commutative Property of Addition b. Commutative Property of Multiplication c. Identity Property of Addition d. Identity Property of

    asked by Cheryl
  108. Physics

    conical pendulum is formed by attaching a 0.200 ball to a 1.00 -long. It has a radius of 40.0cm . What is the tension in the string?

    asked by DAn
  109. Physics

    conical pendulum is formed by attaching a 0.200 ball to a 1.00 -long. It has a radius of 40.0cm . What is the tension in the string?

    asked by DAn
  110. cal

    Let f(x)=-5e^(x+1)+e^8 . find f'(0)

    asked by KOng
  111. cal

    The circumference of a sphere was measured to be 86.000 cm with a possible error of 0.5 cm. Use linear approximation to estimate the maximum error in the calculated surface area and Estimate the relative error in the calculated surface area.

    asked by KOng
  112. psychology

    If you had to argue that either genetics (nature) or environment (nurture) has the greater impact on human development, which would you pick and why?

    asked by Rica
  113. hardware

    Hi i'm just stuck on this question. can please someone help me. Three cortrect ones are: A) A 9-bit word represents twice as many code words as an 8-bit word. B) mp4, mpg and bmp are all examples of video file extensions. C) A data rate of 4 gigabits per

    asked by Sue
  114. chemistry

    A sample containing .187 g cl is dissolved in 50.0 mL water. How many moles of cl ion are in the solution? what is the molarity of the cl ion in the solution?

    asked by kristen
  115. software

    Compton, R. 2010 SOA explained Retail Management vol. 14 no. 6, June pp. 29–32 which one is correct: A Fully correct B Incorrect because one start tag missing C Incorrect because one closing tag missing D Incorrect becausea/ missing inaclosing tag E

    asked by Sue
  116. chemistry

    A solution is prepared by dissolving 25.0 g of ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.0 mL sample of this stock solution is added to50.0 mL of water. Calculate the concentration of ammonium ions and sulfate ions in the

    asked by Anonymous
  117. math

    PLEASE I NEED HELPPPPP.. i have many exercises like that, just want to know where to start thanks. f(x)= x^3+2x^2-x-2 / x^2+x-6 find: 1. domain 2. symmetry or not 3. determine if f(x)is: a)in lowest trem b)proper/improper 4. x-intercepts, y-intercepts 5.

    asked by leticia
  118. Pre-Algebra:HELPPP

    Factor: y^3-3y the ^ is an exponent is the answer y(y^2-3)

    asked by Cheryl
  119. calculus

    PLEASE HELP! Transform polar equation to an equation in Cartesian (rectangular) coordinates. Then identify where it locate on the graph. r sin θ = 4

    asked by Ann
  120. calculus

    PLEASE HELP! Transform polar equation to an equation in Cartesian (rectangular) coordinates. Then identify where it locate on the graph. r sin θ = 4

    asked by Ann
  121. Psychics

    Bradley, working in his 23 C kitchen, is cooking himself a crepe in an iron skillet that has a circular bottom with a diameter of .30 m. How hot must the skillet be in order for Bradley to make a 710.3 m^2 crepe that just fills the bottom of the pan?

    asked by Kendra
  122. algebra/trig

    solve: ln12x = 6

    asked by carolyn
  123. physical science

    a 180 lb person climbs a ladder to a point which is two times the radius of the earth high. how much does he weigh there?

    asked by tam
  124. physics

    a pitcher throws a 0.50kg ball of clay at a block of wood. the clay sticks to the wood on impact, and their joint velocity afterworks in 3.0m/s. what is the original speed of the clay

    asked by Anonymous
  125. physical science

    At the bottom of a well one quarter of radius of the earth deep your weight compare to your normal weight would be

    asked by tam
  126. statistics

    A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 440 seconds and a standard deviation of 60 seconds.

    asked by jackie
  127. english

    In the sentence: Then within two years, King Uther fell sick of a great malady. The word within is a/an: A. verb B. preposition C. pronoun D. adverb I'm stuck between B and D. help? Thanks!

    asked by anthony
  128. Organic Chemistry

    what is the major product if 2,3,3-trimethylpentane was mixed with IBr?

    asked by Paige
  129. math

    how do i rename mixed nimber in simplest form.15/8

    asked by maria
  130. physics

    A 23.0 kg box is released on a 39.0° incline and accelerates down the incline at 0.268 m/s2. Find the friction force impeding its motion.

    asked by md8
  131. math

    how do I solve (.5x?)-1.4=.85

    asked by Jo
  132. Math

    Subtract $259.60 from $300 can you work it out for me, im having a hard time.

    asked by DestinyLashea
  133. Physics

    A closed organ pipe 0.8 m long has a diameter of 7.0 cm. The air in the church is 15oC. What is the fundamental frequency? If the heat is turned up to 20oC, what is the new fundamental frequency? - HELPHELPHELP

    asked by Kai
  134. physics

    Two automobiles of equal mass approach an intersection. One vehicle is traveling with velocity 15.5 m/s toward the east and the other is traveling north with speed v2i. Neither driver sees the other. The vehicles collide in the intersection and stick

    asked by Anonymous
  135. physics

    Two charges are separated until they are a distance of 191 cm apart, causing the electric force between them to increase by a factor of exactly 5. What was their initial separation distance?

    asked by anonymous
  136. chemistry

    How much heat is required to convert 0.4 kilograms of ice at 0 degrees celsius to water at the same temperature?

    asked by Anonymous
  137. College Algebra

    f (x) = - X3 +112 - 8x+7 find f(-2)

    asked by RAM
  138. Science

    A new organism is found that is multicellular, does not have a backbone, and has six legs. How would you classify this organism?

    asked by Anonymous
  139. chemistry

    50ml of water at 46.9 C were mixed with 50ml of water at 25.1 C in a calorimeter also at 25.1 C. The final temperature was 30.1 C Assuming that neither the density of water nor its specific heat capacity change with temperature, calculate the total heat

    asked by venus
  140. chem help urgent!

    i only have one submission for these and i dont' really know how to tell which one has the higher boiling point. can you help? Of each pair of solids, which one has the higher melting point? Kr(s) or Cu(s) and.. CCl4(s) or SiCl4(s)

    asked by Rebekah
  141. Calc

    "Let f(x,y)=2(x^2)y-(y^3)+x-4. a) Find the local linearization of f at (3,1) b) Compute the directional derivative of f at (3,1) in the direction towards the point (-2,3). At (3,1), is the function f increasing or decreasing in the direction towards the

    asked by Brittany
  142. physics

    The table shows the power ratings of four electrical appliances. Fan heater 2 kW Oven 3 kW Kettle 2 kW Microwave oven 0.75 kW The kettle is used for a total of 30 minutes a day. It has an efficiency of 0.9 What is the cost of the energy wasted by the

    asked by Aaron
  143. science

    the specific heat of sliver is 0.235j /g.c. how much heat is neeeded to raise the tempreature of an 8 gram sliver ring be 50 degrees celecius

    asked by nikita
  144. science

    tori wants to increase the tempreature of 500 grams of water from 20 degrees celcius to 100 degrees celecius if the specific heat of water is 4.18j/g. degrees celcius how much heat is needed ?

    asked by nikita
  145. science

    gold has a specific heat of 0.130j/g. degrees celcuis if 195 joules of heat are added to 15 grans of gold homw much does the tempreature of the gold change

    asked by nikita
  146. science

    a plastic container witha mass of 30 grams gains 1,140 joules of heat if the tempreature of the container increases 20 degrees celcius what is the specific heat of the plastic in the container

    asked by nikita
  147. science

    a sliver coin and a gold coin each have a mass of exactly 6.6 grams the specific heat of sliver is 0.235j/g.degrees celcius and the specific heat of gold his 0.130j/g. degrees celcius what coin requires more heat to raise its tempreature by 40 degrees

    asked by nikita
  148. physics

    a karate chop delivers a force of 3000 N to a aboard that breaks. the force that the baord exerts on the hand during this event is A. Less than 300N B. 3000 N c. Greater than 3000N d. need more info

    asked by Anonymous
  149. Statistics

    A typist at a constant speed of 65 words per minute makes a mistake in any particular word with probability 0.06, independently from word to word. Each incorrect word must be corrected, a task which takes 14 seconds per word. Find the mean of the time (in

    asked by Jon
  150. Physics II

    Jose, whose mass is 75 kg, has just completed his first bungee jump and is now bouncing up and down at the end of the cord. His oscillations have an initial amplitude of 11.0 m and a period of 4.0 s. From what height above the lowest point did Jose jump?

    asked by Colin
  151. statistics

    A simple random sample of size n = 300 is obtained from a population whose size is and whose population size is n=20,000 ans whose proportion with a specified characteristic is p=0.8. Describe the sampling distribution of P^. A) Approximately normal; ìp =

    asked by jackie
  152. chemistry

    What do you expect when you mix 1M Na2SO4 with 1M CaCl2?

    asked by jenny
  153. algebra

    Find the functional values f(-2), f(0), and f(1) for the function. ƒ(x) = x² - 1

    asked by bianca, pleeease help i'm lost
  154. Physics

    conical pendulum is formed by attaching a 0.200 ball to a 1.00 -long. It has a radius of 40.0cm . What is the tension in the string?

    asked by DAn
  155. MATH probability

    A pair of dice is cast. What is the probability that the sum of the two number landing uppermost is less than 5, if it is known that the sum of the numbers falling uppermost is less than 7?

    asked by Anonymous
  156. Calc

    "Consider the surface given by 4x^2-y^2+5z^2-10z=55. a) Find all points on the surface at which the tangent plane is parallel to the plane 8x+y+15z=1. b) Pick one of these points and give the equation of the tangent plane to the surface at that point."

    asked by Anonymous
  157. question

    A temperature of 41 degrees F is equivalent to 278.2 degrees K, while a temperature of 86 degrees F is equivalent to 303.2 degrees K. Find the equation converting Kelvin temperature to Fahrenheit. What is the Fahrenheit temperature when it is 180 degrees

    asked by bianca
  158. Medical Office Asst

    On the ADA for Keith Konklin, the number 333-2589 should be placed in block A( #7 B) # 18 C0 # 19 D) #31

    asked by rachel
  159. business

    when a disaster hit an area, the costof everything, food, water, housing, gas, and so forth, seems to go up immediately. Explain why this phenomenon say be a good thing using the laws of supply and demand?

    asked by denise
  160. Trig

    Use Trig identities to verify that sec^4(x)-tan^4(x)=1+2tan^2(x), Only work with one side of the equation

    asked by Anonymus
  161. chemistry

    ____ 14. Adding a charged particle common to two solutes decreases solute concentration. This observation demonstrates a. the common-ion effect. c. hydrolysis. b. Le Châtelier's principle. d. buffering.

    asked by alex
  162. Science

    How does the movement of electrons and protons create large amounts of energy in oxidative phosphorylation?

    asked by EL
  163. Science

    how do oxidation-reduction and phosphorylation reactions drive the glycolytic pathway?

    asked by EL
  164. SOC 120

    Hello I am looking for some help on some examples of Deviant human behaviors that are in one society but not considered in another society? I am stuck? Any suggestions you might recommend?

    asked by Nikol
  165. Chemistry

    A cubic piece of metal measures 7.50 cm on each edge. If the metal is nickel, whose density is 8.90g/cm^3, what is the mass of the cube?

    asked by Kelsey
  166. chemistry

    A 1.04L sample of gas at 759 mm Hg pressure is expanded until its volume is 2.24L. what is the pressure in the expanded gas sample (at constant temp.)

    asked by naseeb
  167. history.

    Who dominated the South's politics?

    asked by nicole
  168. physics

    A door starts from rest and swings with an angular acceleration, alpha, α = 6 rad/s2, where t is in seconds. Determine the angle in radians through which the door turns in the first 3 s. Hint: kinematics equation for angular position (i.e., angle) is

    asked by Anonymous
  169. Physics

    conical pendulum is formed by attaching a 0.200 ball to a 1.00 -long. It has a radius of 40.0cm . What is the angular velocity of the ball if the tension in the string is 2.14N?

    asked by Dan
  170. Microbilogy

    Albert Kluyver "From elephant to...bacteria-it is all the same!" What did he mean?

    asked by Stephanie
  171. Microbiology

    The ability of farmers around the world to produce crops such as corn, wheat, and rice is often limited by the lack of nitrogen-based fertilizer. How might scientists use Beijerinck's discovery to increase world supplies of grain?

    asked by Linda
  172. Physics

    A 1550 kg automobile has a wheel base (the distance between the axles) of 3.00 m. The center of mass of the automobile is on the center line at a point 1.10 m behind the front axle. Find the force exerted by the ground on each wheel. force on each rear

    asked by Skye
  173. Math

    Anita says the plus sign + forms 2 pairs of vetical angles. Charles says it forms 2 pairs of congruent angles? Who is correct, and why? Wouldn't it be both, because there are 2 pairs of opposite angles with the same measure, and 4 congruent angles.

    asked by Annabel
  174. calculus

    Determine the values of a and b for the function f (x) = ax^3 + bx^2 + 3x - 2 given that f (2) = 10 and f ′(-1) = 14. Please help, Thanks!

    asked by ben
  175. english

    why are string puppets harder to make &use than finger puppets?

    asked by esha
  176. geometry

    triangles ABC and XYZ are congruent. Angle A is one half the size of angle B. Angle Y is 90 degrees. Angle C and angle Z are both 45 degrees. what is the measure of angle A.

    asked by Nana
  177. English

    How Did Patria Mirabal foreshadow in the book " In the time of a butterflies" ?

    asked by Fred
  178. finance

    Anne is planning to attend college when she graduates from high school in 7 years from now. She anticipates that she will need $10,000 at the beginning of each college year to pay for tuition and fees, and have some spending money. Anne has made an

    asked by sue
  179. Eminent Domain

    how does the third amendment affect eminent domain

    asked by ashley --- HELP PLEASEE!!!
  180. math

    would a banana way a gram or a kilogram?

    asked by olivia
  181. Algebra 1

    using the vertical motion model h=-16t + vt + s You and a frine are playing basketball. you can jump with an initial velocity of 12 feet per secon. You need to jump 2.2 feet to dunk a basketball. your friend can jump with an initial velocity of 14 feet per

    asked by Florence
  182. Calculus

    1. Use cylindrical shells to compute the volume of the solid formed by revolving the region bounded by y= 2x and y = x^2 -3 about x= 6. 2. Find the volume of the solid formed by revolving the region bounded by y= e^x , y= e^-x, and y= 3 about y= 5.

    asked by Mia
  183. sociology

    The general trend of American's attitudes toward the unmarried has been from an attitude of _____ in the 1950s to an attitude of ______ in the 2000s A.) Non-acceptance; acceptance B.) Neutrality; non-acceptance C.) Non-acceptance; neutrality D.)

    asked by ashley
  184. calculus

    Determine the equations of two lines that pass through the point (1, -5) and are tangent to the graph of y = x^2 - 2.

    asked by gt
  185. chemistry

    459 torr is how much in atm, pascals, and mm Hg?

    asked by naseeb
  186. chemistry

    Write a balanced chemical equation for the overall cell reaction represented as: a) Ag(s)|Ag^+(aq)||Sn^4+(aq), Sn^2+(aq)|Pt(s) b) Al(s)|Al^3+(aq)||Cu^2+(aq)|Cu(s) c) Pt(s)|Fe^2+(aq), Fe^3+(aq)||MnO4^-(aq),Mn^2+(aq)|Pt(s)

    asked by Jazmin
  187. science

    what is the human life cycle

    asked by jane
  188. COM / 220

    I need help with the DQ 2 week 2. Could someone help me please?

    asked by Ashley
  189. Math

    For the sequence, describe the pattern, write the next term, and write a rule for the nth term. 2/3,4/4,6/5,8/6,...

    asked by Pedro
  190. college math

    Find the distance of the shotcut and the distance of the long way for two locations. find the number of seconds saved ( 2.1 and 5.8) Approximate the are of the affected region (24 and 248 Sq Ft). find the average amount of oxgen saved per second saved

    asked by JC
  191. mathematics

    write a rule for nth term: 1/10, 3/20, 5/30, 7/40,.... i think the next term is 9/50 but i don't know how i got that

    asked by Amanda
  192. Math-HELP PLEASE

    Anita says that the plus sign + forms 2 pairs of verticle angles. Charles says it forms two pairs of congruent angles. Who is correct?

    asked by Catherine
  193. Math

    Barbara is playing a game. She jumps forward 5 feet, and then steps backward 2 feet. How many jumps will it take her to reach the finish line, which is 20 feet from where she started? Make a table to show Barbara's position. Barbara will reach 20 feet on

    asked by Haley
  194. chemistry

    Determine how many milliliters of 0.102M NaOH solution is needed to neutralize 35.0mL of 0.125M H2 SO4 solution.

    asked by jane
  195. Chemistry

    What is the molality of a 0.065M solution of ethyl alcohol in water at 25 degrees Celcius? (Assume the density of the solution at such low conentration is equal to that of water at 25 degrees Celcius, 0.997 g./mL)

    asked by Shai
  196. physics

    In the high jump, the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of a pole. With what minimum speed must the athlete leave the ground in order to lift his center of mass 1.65 m and cross the bar with a

    asked by Matt
  197. Algebra 1

    a recent 12 year period,, the total government payroll in the US can be modeled by P= 26t^2 + 1629t + 19,958, where P is the payroll in million of dollars and t is the number of years since the beginning of the 12 year period 1) Use the discrimnant to show

    asked by Lizzie
  198. Biology

    Name the intermediates of the Calvin cycle... I am thinking it is 1) Carbon fixation 2) Reduction 3) Regeneration But I believe it is wrong because they are stages... :S help anybody?

    asked by Joey
  199. Geometry-Please check

    I have two questions If a parallelogram is a rhombus, then the diagonals are congruent- I don't think so-they can bisect each other and are perpendicular, correct but not congruent Secondly, A kite is a quadrilateral that has exactly 2 pairs of consecutive

    asked by Mellie
  200. Math

    a Frog is at the bottom of a 21 foot well. The frog jumps up 4 feet, and then falls back 2 feet. How many jumps will it take for the frong to jump out of the well?

    asked by Haley
  201. reading

    what are some examples of everyday kid ritual?

    asked by frank
  202. Biology- PLEASE HELP ME ):

    how does the salinity of a solution affect osmosis in an onion cell?

    asked by Kasey
  203. Math

    a company charges Mae $625 to maintain 1000 square feet of lawn. the company restores Walters 800 square foot lawn at the same rate. How much does Walter have to pay?

    asked by Ilovemath
  204. health

    Define incidence rate and incidence proportion. Identify the differences

    asked by maryjane
  205. science

    One direction of movement of buildings from earthquake vibrations is? Hint...its a 9 letter word

    asked by linda
  206. Precalc Please Help

    1 + tan^2 (5) - csc^2 (85) = ? Would this equal 0 could someone explain this to me and the correct answer?

    asked by Amy
  207. physics

    a) What is the minimum work needed to push a 900 kg car 410 m up a 17.5° incline with zero friction? If i know this answer is 1.08e6 what equation should i use for the next part because the one i used was wrong (b) What is the minimum work needed if the

    asked by bill lin
  208. math

    determine limit √3, √(3√3), √(3√(3√3))

    asked by Anonymous
  209. medical billing

    which health nsuane program is designed to complement the retiremet survivor and disabiity insurance enacted under title 11 of the social security act

    asked by jan
  210. math

    Ashley can ride her bike to work in 2/3 of an hour. When she drives to work it takes 1/3 of an hour. If she drives 12 miles per hour faster than she rides her bike, how fast does she ride her bike?

    asked by morgan
  211. psychology

    I need an example of how one domain of development impacts the other two.

    asked by leanne
  212. high school chem 1

    2Fe(OH)3 + 3H2SO4 -> Fe2(SO4) + 6H2) How many molecules of H2O can be produced from 350 liters of NH3?

    asked by tyler
  213. English

    where can i find help about direct and indirect objects

    asked by Ray
  214. Preclaculus Help Another

    cot(40) - ((sin(50))/(sin(40)) = ? I thought the answer might be 0, but I'm not quite sure. please provide steps, too.

    asked by Amy
  215. High school chem 1

    4NH3(g) + 5O2(g) -> 4NO(g) + 6H20(g) what mass of H2O can be produced from 350 liters of NH3?

    asked by tyler
  216. math

    Find the rule for the sequence: 4.2, 2.6, 1, -.06, -2.2

    asked by sam
  217. Science

    Suppose the partial pressure of one gas in a mixture decreases by 5 kPa. How does this change affect the total prelssure of the mixture?

    asked by A. Hickman
  218. math

    Find the rule for 9,16.8, 24.6, 32.4

    asked by Lola
  219. Stoichiometry

    How man liters of hydrogen should have been collected by reacting .045 grams of magnesium?

    asked by Sonia
  220. Math

    24x - 10 = 18x - 4. Please I need operations for this equation

    asked by Daniel
  221. High School chem 1

    2Fe(OH)3 + 3H2SO4 -> Fe2(SO4)3 + 6H2) Question: How many molecules of H2O can be made from 9.21 x 10^22 molecules of H2SO4?

    asked by tyler
  222. physics

    A 77 g arrow is fired from a bow whose string exerts an average force of 95 N on the arrow over a distance of 81 cm. What is the speed of the arrow as it leaves the bow?

    asked by Anup
  223. geometry

    A wheelchair ramp has a rise from the ground of 1 foot. The ramp has a length of 14 feet. To the nearest degree, find the angle the ramp makes with the sidewalk.

    asked by Keegan
  224. math

    if 65% of students are wearing t shirts and 48% are wearing jeans is this possible? Please explain.

    asked by linda
  225. math

    can 25% of something be greater than 50% of something else? Please explain.

    asked by linda
  226. chemistry

    A reaction mixture is in a 5.4 L flask at 25 oC initially contains only 7.64 grams of acetic acid. (CH3COOH). Set up your I.C.E. table and use it to answer the following questions. HINT: You will need to look up the Ka for this equilibrium reaction.

    asked by juan
  227. chemistry

    a tank contains 2.6 mol of nitrogen and 1.3 mol of oxygen. If 0.65 mol of oxygen were added to the tank, what effect would this have on the pressure in the tank?

    asked by Anonymous
  228. Math

    I have no idea how to do this problem: Select the expression below that is equal to 4(9-m). A. 4m-36 B. 13-m C. 36-m D. 36-4m

    asked by Sammy
  229. physics

    If a 9800kg train car traveling at 15m/s impacts another train car at rest and after the impact the 2 are going 6m/s. What is the mass of the second train car?

    asked by Mark
  230. math

    Write a rule for thenth term for the following sequence: 2/3, 4/4, 6/5, 8/6, ... I know the next term is 10/7 but I don't know how I got it

    asked by sam
  231. Math

    12 - 9 = 15d + 9? please help with operations

    asked by Stuart
  232. algebra

    a truck has a diameter of 25 inches. a tack is stuck on the bottom of the tire. if the truck travels one mile, how many times will the tack touch the road?

    asked by Anonymous
  233. chemistry

    What volume at STP would be required to react with 0.100 mol of hydrogen to produce ammonia?

    asked by Anonymous
  234. Algebra 2

    Just checking to see if I got this right. Thanks, (3x^4--8x^2 -3x-3) / (x^2-3) 3x^2+1 remainder -3x

    asked by Paige
  235. science

    a 100.0 gram metal sample is heated to a temperature of 110 degrees celcius then placed into a calorimeter containing 100.0 r of pure water (at initial temperature of 23 degrees celcius). after the sample and water reach thermal equalibrium, their final

    asked by jason wolthen
  236. geometry

    what is the area of this trapezoid if the angles are 11in,9in,and 3in

    asked by Jawuan
  237. Math

    A basketball team scored 48 baskets in 1 game. Each basket was worth one or two points. If the team scored 84 points, how many one- point and two-point baskets did it score?

    asked by Emily
  238. Math

    12 - 9 = 15d + 9? please help with operations

    asked by Stuart
  239. statistics

    The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures students' study habits and attitudes toward school. Scores range from 0 to 200. The mean score for college students is about 115.8, and the standard deviation is about

    asked by Anonymous
  240. French

    I'm supposed to come up with something in the imparfait that begins with "Quand j'étais petite, ... but my vocabulary is very limited so I don't really know what to write. Any suggestions?

    asked by Cynthia
  241. Statistics

    The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures students' study habits and attitudes toward school. Scores range from 0 to 200. The mean score for college students is about 119, and the standard deviation is about

    asked by Yesenia
  242. statistics

    How heavy a load (pounds) is needed to pull apart pieces of Douglas fir 4 inches long and 1.5 inches square? Here are data from students doing a laboratory exercise: 22565 28373 25826 26468 27508 23401 24998 32436 25405 29235 29679 33661 27775 28517 30371

    asked by Yesenia
  243. math

    Hitomi has a total of 30 red and blue bowling balls at her bowling alley. Each red ball weighs 8 lb. each blue ball weighs 9 lb. If the total mass of the blue balls is 49 lb. heavier than the total mass of the red balls, how many red balls does she have???

    asked by Katherine
  244. Science (NO WEBSITE has it)

    What boundary did the Prince William Sound earthquake have? (transform, divergent, convergent.)

    asked by Cheyenne
  245. statistics

    The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures students' study habits and attitudes toward school. Scores range from 0 to 200. The mean score for college students is about 115.8, and the standard deviation is about

    asked by Yesenia
  246. Geometry-Please check my answers

    I have two questions: If a parallelogram is a rhombus, then the diagonals are congruent- I don't think so in all cases-they can bisect each other and are perpendicular, correct but not necessarily congruent so this should be false? Secondly, A kite is a

    asked by Mellie
  247. math

    a circular coin has a radius of 8.2 mm. What is its circumference ,rounded to the nearest tenth?

    asked by ????
  248. chem

    Indicate the type of crystal (molecular, metallic, covalent-network, or ionic) each of the following would form upon solidification. 1. B

    asked by Rebekah
  249. Physics

    An object moves from the position (1,3,-5) to position (-1,4,8) during time 8 s. what is the average velocity?

    asked by Jasalle
  250. math

    You are playing a card game with a deck of 52 cards.You win if you draw a red card that is a multiple of 5.What are your chances of winning on your first draw?

    asked by kamaria
  251. Physics

    an object moves from the position (1,3,-5) to the position (-1,4,8) during time 8 s. what is the average speed?

    asked by Jasalle
  252. Religion

    What is the best definition of the Belief perspective? My book does not define it just relates Ultimate Reality existance to it. Thank you for bring a clear understanding to me.

    asked by Ann
  253. math

    Perform the indicated operation and, if possible simplify. 7/12+(-3/5)

    asked by Melissa
  254. Physics

    A car is traveling a road that makes quarter of a circle with a constant speed. What is the magnitude of the average velocity of the car?

    asked by Jasalle
  255. MATH PLEASE HELP

    1 + tan^2 (5) - csc^2 (85) = ? Would this equal 0 could someone explain this to me and the correct answer?

    asked by Amy
  256. Math algebra

    A 120- foot long rope is cut into three pieces the first piece of rope is twice as long as the second piece of rope the third piece of rope is three tines as long as the second piece of rope what is the length of the longest piece of rope?

    asked by Anonymous
  257. math

    i still don't get it ms sue for 3.14 x 16.4 it will equal .376 not 51.996

    asked by ????
  258. Physics

    Please Help! An object at 20 degrees Celsius with heat capacity 100 calories/Celsius is placed in 40 grams of water at 100 degrees Celsius. After equilibrium is reached, the object is removed from the hot water and placed in 200 grams of water at 0 degrees

    asked by Amanda
  259. chemistry

    A 6.0 L flask contains a mixture of methane, argon and helium at 45 degrees C and 1.75 am. If the mole fractions of helium and argon are 0.25 and 0.35, respectively, how many molecules of methane are present?

    asked by Katie
  260. Physics

    Please help! Suppose that a 400 gram copper object (specific heat 0.092 cal/g/degrees Celsius) receives 900 cal. of heat. What is the temperature change? Explain your reasoning. Do not use algebra Thanks!

    asked by A
  261. math

    given an 8 foot by 10 foot wall how many 6 inch square tiles would be needed to cover the wall

    asked by margie
  262. Physics

    Suppose equal volumes of iron and water interact thermally. Which will change temperature more? If they are initially 30 Celsius degrees apart in temperature, how much will the temperature of each change? Explain your reasoning. Thanks!

    asked by A
  263. math

    a circular coin has radius of 8.2 what is the circumference rounded to the nearest tenth? please show work

    asked by daisy
  264. Chemistry

    What volume at nitrogen would be required to react with 0.100g of hydrogen to produce ammomia?

    asked by HELP!
  265. math

    a percan pie 40 ft in diameter was baked in oklahoma,in 1989. What was the pie circumference ,rounded to the nearest foot? plz shoe work

    asked by daisy
  266. Math

    why does tan(-120) = - 0.71312301 and not sqrt 3 ? I tried making a graph and still came up with sqrt 3??

    asked by Amy
  267. Physics

    Two stones are thrown vertically up with initial velocity Vo, second stone with a time delay To with respect to the first one. At which time after the beginning of the motion the two stones will collide? Is this scenario possible for any Vo and To? What

    asked by Jasalle
  268. math

    a circular track has a radius of 100ft. elena wants to run 2 miles. There are 5,280 ft in a mile. Can you find the circumference of a circle if you know the radius? explain your answer

    asked by daisy
  269. high school chem 1

    Equation: 4NH3(g) + 5O2(g) -> 4NO(g) + 6H2O(g) question: What volume of NH3 is needed to react with 71.6 liters of oxygen?

    asked by tyler
  270. math

    A drawer contains 7 black socks, 5 white socks, and 3 brown socks. What is the probability that 2 white socks will be removed in succession?

    asked by Matt
  271. helppppp :)

    how can we help african people who is having a hard time with poverty? :)

    asked by kim
  272. Chem molarity

    A beaker contains 100 grams of 1.20 M NaCl. If you transfer 50% of the solution to another beaker, what is the molarity of the solution remaining in the first beaker?

    asked by Toni Jones
  273. Chemistry

    What volume at nitrogen would be required to react with 0.100g of hydrogen to produce ammomia?

    asked by i dont know how to set it up!
  274. Chemistry

    What volume at nitrogen would be required to react with 0.100g of hydrogen to produce ammomia?

    asked by i dont know how to set it up!
  275. algebra

    what is an example of a function that you might encounter in everyday life and describe its domain and range.

    asked by keisha
  276. Calculus

    Find the derivative of F(z)=3+cos(2z-1)

    asked by Zukii
  277. Physics

    A ship crosses a river aiming at the angle è to the left from the straight course. The speed of the ship with respect to water is v'. The width of the river is d and the water velocity is u to the right. What will be the side displacement h of the ship as

    asked by Jasalle
  278. algebra

    what is the slope of a line parallel to y=1/2x+2.3

    asked by nigel
  279. chemistry

    What volume at nitrogen would be required to react with 0.100g of hydrogen to produce ammomia? I need help setting it up!

    asked by i dont know how to set it up!
  280. chemistry

    What volume at nitrogen would be required to react with 0.100g of hydrogen to produce ammomia? I need help setting it up!

    asked by i dont know how to set it up!
  281. chemistry

    What volume at nitrogen would be required to react with 0.100g of hydrogen to produce ammomia? I need help setting it up!

    asked by i dont know how to set it up!
  282. agebra

    simplify -14xy / 42x^5y^8

    asked by Jackster
  283. chemistry

    A pair of students performs an experiment in which they collect 27 g CaO from the decomposition of 41 g CaCO3. Are these results reasonable? Explain your answer using percentage yield.

    asked by joe
  284. biology

    A question in Campbell's 8th edition study guide for AP Biology says: A multifactorial disorder _. Answer: has a collection of symptoms traceable to an epistatic gene. There is another answer choice which says : has both genetic and environmental causes.

    asked by Jake
  285. Math

    Earn al least $150 a week. $10 per hour working for a farmer. $5 per hour babysitting. can work at most 25 hours per week. Write and graph a system of linear inequalities.

    asked by Mary
  286. Math

    The perimeter os a tennis court is 228 feet and the lenght is 42 feet longer than the width. Write a linear system. Let w be the width of the tennis court and let l be the lenght of the tennis court. Graph the linear system.

    asked by Mary
  287. Inter algebra

    Simplify the following expression, and rewrite it in an equivalent form with positive exponents. (10x-5)-5

    asked by Jackster
  288. Math: does anyone know how to solve this

    1 + tan^2 (5) - csc^2 (85) = ? Would this equal 0 could someone explain this to me and the correct answer?

    asked by Amy
  289. Chemistry

    I need help classifying these as physical and chemical properties! 1. sodium metal in chlorine gas releases luster. 2. sodium metal has a metallic silver luster. 3. sodium metal in water porduces hydrogen gas. 4. sodium metal melts to a liquid at 98

    asked by Emily Grossman
  290. English

    1. The news about the hurricane is _____ in the newspaper. comparative form of clear) 2. My brother has seen this movie _____ than he has seen any other. (comparative form of often) 1.clearer 2.more often

    asked by Hayley
  291. chem

    I need help classifying these as physical or chemical changes! 1. sodium metal exposed to air turns dark gray. 2. steam in a test tube condenses to moisture. 3. baking soda in vinegar releases bubbles. 4. water dissolves in vinegar to give a solution. 5.

    asked by Emily Grossman
  292. denominators

    v/3 +v/v+5 = -4/v+5

    asked by Anonymous
  293. Geometry

    IN rhombus ABCD, measure of angle DAB equals two times the measure of angle ADC and CB equals 6. Find measure of angle ACD

    asked by Anonymous
  294. Fractions

    Maria played with her dolls for 45 minutes.this coima also be written as?

    asked by Elizabeth
  295. Math Check

    the angle with 60 degrees has a reference angle of 60 degrees?

    asked by Amy
  296. Measurment

    What is the area of this triangle with 22,16,28 And a nine in the middle?

    asked by Elizabeth
  297. Math

    Use scientific notation to divide the following two numbers. Express the answer using scientific notation; retain at least three decimal places. 6.2 • 107 / 4.15 • 103

    asked by Jackster
  298. science

    A golf ball and a ping-pong ball are dropped in a vacuum chamber. When they have fallen halfway down, they have the same?

    asked by G
  299. Math repost

    I posted this question before at 7:14 I think the answer to it is 0. cot(40) - ((sin(50))/(sin(40)) = ? these are also degrees steps too please. I thought since 50+40= 90 then that part would be 1, but then how would cot 40 turn out to be 1

    asked by Amy
  300. Math

    tan(-120)= sqrt 3 OR - sqrt 3 (Helper stated that it was sqrt 3) But, I'm just confused over this part: for even vs. odd functions it saids that tan(-angle) = - tan(angle) so the even vs. odd doesn't matter since tan is positive in the QIII?

    asked by Amy
  301. algebra 2

    What is the quotient: (–3x3 + 16x2 + 13x – 6) ÷ (3x – 1) ?

    asked by jessica
  302. BUSINESS: MGT470

    Your team has been hired as consultants by a company and is meeting with the executive boardPrepare a 15- to 20-slide PowerPoint® presentation with detailed speaker’s notes that describes the ISO 14001 certification process. Address the following

    asked by BRENDA
  303. math

    Last year's computer model is on sale for $799. You can add more memory to the computer. Each chip of 8 megabytes of memory costs $25. How many megabytes of memory can you add if you have at most $1,000 to spend.

    asked by steven
  304. Math

    blank is a polynomial, you would write the polynomial as a product of factors?

    asked by Ebony white
  305. math

    Last year's computer model is on sale for $799. You can add more memory to the computer. Each chip of 8 megabytes of memory costs $25. How many megabytes of memory can you add if you have at most $1,000 to spend.

    asked by steven
  306. Math

    True or false, A solution of a system of linear equations is an ordered pair that satisfies one of the equations in the system?

    asked by Megan Ruff
  307. Math

    What answers this definition: A polynomial, you would write the polynomial as a product of factors.

    asked by Megan Ruff
  308. Physics

    A gunman shoots from a riffle in a horizontal direction without correcting for gravity. How much below the intended target, at a horizontal distance, will the bullet strike if its initial speed is Vo??

    asked by Jasalle
  309. math

    A computer costs $799. To add memory it costs $25 for 8 megabytes. How much memory can you add if you have at most $1,000 to spend.

    asked by steven
  310. Math

    Tennis balls withal diameter of 2.5 in. Are sold in cans of three. The can is a cylinder. What is the volume of the space in the can not occupied by tennis balls? Assume the balls touch the on the sides,top and bottom.

    asked by Please Help
  311. precalculas

    The doubling period of a baterial population is 20 minutes. At time t=100 minutes, the baterial population was 80000. What was the initial population at time t=0? Find the size of the baterial population after 4 hours.

    asked by katrina
  312. Physics

    A gunman shoots from a riffle in a horizontal direction without correcting for gravity. How much below the intended target, at a horizontal distance, will the bullet strike if its initial speed is Vo??

    asked by Jasalle
  313. pre calc

    find the exact values of the six trigonometric functions of theta if the terminal side of theta in standard position contains the given point: 1. (8, 4) 2. (4, 4√3) 3. (0, -4) 4. (6, 2)

    asked by Marcy
  314. precalc

    Find the exact values of the six trigonometric functions of theta if the terminal side of theta in standard position contains the given point: 1. (8, 4) 2. (4, 4√3) 3. (0, -4) 4. (6, 2)

    asked by Anonymous
  315. pre calc

    find the exact values of the six trigonometric functions of theta if the terminal side of theta in standard position contains the given point: 1. (8, 4) 2. (4, 4√3) 3. (0, -4) 4. (6, 2)

    asked by Marcy
  316. math

    use the four digits 3 4 5 6 exactly once each to form a division problem which has a quotient of 0.08 write the appropriate division problem

    asked by michael
  317. MATH

    I'm doing a proportion fora problem. Would it be $/ft = ft/x or $/ft = x/ft

    asked by Themathperson
  318. biology

    what forms between the other two primary tissue layers

    asked by Paige
  319. bio

    You have a sample of NaCl that contains 100 mg/ml NaCl. You are trying to perform an reaction that requires 10ml of 20 mg/ml. Enter in the correct amount (in ml) of Stock NaCl solution you need to use to make 10ml of 20 mg/ml NaCl

    asked by mina
  320. math

    x/2-4=-5

    asked by megan
  321. math

    x/4-4=3x/4-6 plz show step by step

    asked by megan
  322. Math

    I'm doing a proportion for a problem. Would it be $/ft = ft/x or $/ft= x/ft

    asked by sissy
  323. Math

    Simplify the following expression, and rewrite it in an equivalent form with positive exponents. -14xy / 42x^5y^8

    asked by Jackster
  324. math

    if a octagon has a perimeter of 88 centimeters, what is the measure of each of its sides?

    asked by michell
  325. chem 1

    Using equation: 2Fe(OH)3 + 3H2SO4 -> Fe2(SO4)3 + 6H2O Question: How many molecules of H2O can be made from 9.21 x 10^22 molecules of H2SO4?

    asked by tyler
  326. math

    a jet flies with wind at 1100 km/h and against the same wind at 750 km/h.Find the rate of the wind and the speed of the jet in still air.

    asked by natalia