Questions Asked on
February 9, 2011

  1. math

    how do you simplify cos(A+B)*cos B=sin(A+B)*sin B can you show me the steps? thank you very much!!!

    asked by candybar
  2. Biology

    *distinguish between motif and domain

    asked by Anonymous
  3. Chemistry

    Kc=1. The initial concentrations are A = 0M, B = 0M, C=10M. A+B --> C calculate the reaction quotient. (c)/(a)(b) = 10/0 .. is the answer zero?

    asked by Jenny
  4. chemistry

    One isotope of a metallic element has mass number 59 and 31 neutrons in the nucleus. The cation derived from the isotope has 26 electrons. Write the symbol for this cation.

    asked by Alex
  5. microbiology

    When looking at various stains (i.e gram , acid fast), how do you differentiate between Micrococcus roseus and Lactococcus lactis? Thank you

    asked by Bacteria
  6. science

    a project is lauched upward at an angle of 75 from the horizontal and strikes the ground a certain distance away. For what other angle would it have the same range?

    asked by Mykmoloko
  7. Algebra 1

    Solve each system using elimination 3x+3y=27 x-3y=-11 thx

    asked by Alex
  8. Math

    Need help solving this problem. If there's an equation at the end, need help in how to solve that also. Compounded interest problem. Principal $825. Rate 4%. Compounded Annually. Time 10 years.

    asked by J
  9. physical science

    A projectile is launched upward at an angle of 75 from the horizontal and strikes the ground a certain distance away. For what other angle would it have the same range?

    asked by Mykmoloko
  10. 8th grade math

    According to one survey, the number of consumers who planned to purchase a television for the purposes of viewing the Super Bowl rose from 1.4 million in 2005 to 4.5 million in 2011. Suppose that in 2005 the average purchase price for a television was

    asked by Anonymous
  11. Chemistry

    How do I calculate the wavelength of the emission line when electrons drop from the 4th to the 3rd energy level in the hydrogen atom?

    asked by Lis
  12. Chemistry

    If a reaction quotient is undefined, and the Kc = 1. A+B=>C A=0m, B=0m, C=10m What happens to the concentrations of A,B,C? do they decrease or increase or no change to reach equil?

    asked by Jenny
  13. Calculus

    Derivative of: (t^7+t^8-1)/t^9

    asked by Grace
  14. 3rd grade math - arrays

    Mary says that the greater number of counters, the greater the number of different arrays you can form. Give an example that shows that Mary is wrong.

    asked by Trevor
  15. math

    ratio of 8/9,quotient of 8/19,percent of 8/19.

    asked by karl
  16. Physics

    A fountain contains a 3 m tall cylinder with holes placed at a height of 1 m and 2m. The water level is kept constant at a height of 3 m by an input pipe. As water shoots out from the tube, it strikes the fountain pool at some distance x away from the

    asked by Nick
  17. Physics

    In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 8A (amperes), the resistance is 15 ohms. What is the current when the resistance is 4 ohms?

    asked by Rachal
  18. math

    your class has 8 women and 19 men. write the number of women to men as a ratio and as a quoyient. whatpercent of the class are women? show your work.

    asked by karl
  19. pre-algebra-is my answer right

    Rewrite the expression without using a negative exponent. 4z^-4 Simplify your answer as much as possible. is this right? (1/4z^4)

    asked by Rachal
  20. science

    a roller coaster has an average speed of 5.0 m/s. if the roller coaster ride last 40 seconds, what distance does it travel?

    asked by jessica
  21. GEOGRAPHY

    List down four differences between evaporation and condensation

    asked by Anonymous
  22. physics

    Two friends are sitting in a stationary canoe. At the person at the front tosses a sack to theperson in the rear, who catches the sack 2 later. Which plot in the figure shows thevelocity of the boat as a function of time? Positive velocity isforward,

    asked by Ed
  23. Algebra 1

    Lesson 3 Assignment .Explain the differences between solving these two equations: By steps log3(x - 1) = 4 AND log3(x - 1) = log3^4

    asked by Matt D.
  24. Physics

    Explain atomic line spectra in terms of transitions between discrete energy levels.

    asked by Hakuoh
  25. arithmetic

    the first and second terms of an arithmetic progression are 161 and 154 respectively.the sumthe first m terms is zero.find the value of m

    asked by parth
  26. Calculus

    A cubic polynomial function f is defined by f(x) = 4x^3 + ax^2 + bx + k? A cubic polynomial function f is defined by: f(x) = 4x^3 + ax^2 + bx + k where a, b, and k are constants. The function f has a local minimum at x= -1, and the graph of f has a point

    asked by Leanna
  27. Math

    L1: (-2,-1), (1,5) L2: (3,5), (5,9) These lines are parallel because they have the same slope but different y-intercepts.(Is this true and if it is how do you solve the problem and graph it)

    asked by Khylisha
  28. Math

    L1: (-2,-1), (1,5) L2: (3,5), (5,9) These lines are parallel because they have the same slope but different y-intercepts.(Is this true and if it is how do you solve the problem and graph it)

    asked by Khylisha
  29. Math

    A. L1: (0,-1), (5,9) L2: (0,3), (4,1) The lines are perpendicular because there slopes product equal -1. The point they intersect is (1.6,2.2).(Is this true and how do you solve it)

    asked by Khylisha
  30. physics

    An archer pulls her bow string back 0.400 m by exerting a force that increases uniformly from zero to 240 N. (a) What is the equivalent spring constant of the bow? 1 N/m (b) How much work does the archer do in pulling the bow? 2 J THANKS!

    asked by jennifer
  31. Math

    1. Imagine driving down a mountainside. You see a sign indicating there is a 12% grade. Approximate the amount of horizontal change in your position if you note from elevation signs that you have descended 2000 feet vertically. Use the embedded equation

    asked by Khylisha
  32. Need someone to check

    It is known that about 20% of car insurance policies include emergency road service. Suppose we randomly select 10 car insurance policies. What is the probability that at least one policy will have emergency road service? Answer 0.6242 0.3758 0.8926 0.2684

    asked by Anonymous
  33. physics

    2 cars are in a race the first car is 200m ahead of the second car.the first car is moving with a uniform velocity of 30m/s while the second car starts from rest and accelerate to a rate of 4m/s how far and how long will it take the second car to meet the

    asked by Seun
  34. algebra

    Why does the inequality sign change when both sides ar multiplied or divided by a negative number?

    asked by chris
  35. ALGEBRA 1

    Lesson 3 Assignment .Explain the differences between solving these two equations: By steps log3(x - 1) = 4 AND log3(x - 1) = log3^4

    asked by Matt D.
  36. english

    can u find the climatic sentences in the poem Africa by David Diop

    asked by kim
  37. english 3

    Which one of the following statements is not true about the president Ratcliffe portrayed in The General History?

    asked by caitlyn
  38. Chemistry

    WRITE THE BALANCED CHEMICAL EQUATION,WRITE THE OVERALL IONIC EQUATION,IDENTIFY THE SPECTOR IONS AND POSSIBLE PRECIPITATES,WRITE THE NET IONIC EQUATION FOR mercury(II)chloride(aq)+potassium sulfide(aq)

    asked by Jasmine
  39. Chemistry

    2 CO (g) + O2 (g) --> 2 CO2 (g) The mechanism below has been proposed for this reaction; (slow) O2 + CO --> CO2 + O (fast) O + CO --> CO2 Based on this mechanism what is the rate law for this reaction?

    asked by John
  40. US History

    What were the goals of the New Deal? Were these goals accomplished?

    asked by Miley K.
  41. Chemistry

    Reactions can be speeded by increasing the proportion of reactant molecules which collide with proper orientation. This can be accomplished by......... A)compressing the reactant mixture. B) heating the reactant mixture. C) addition of a catalyst. D)

    asked by Gina
  42. Statistics- Need someone to check

    Ok so i don't know how i got that answer i think i typed in a wrong formula or read something wrong. I got .8926 for the first one. And the second one i don't know what i am suppost to use from the first answer to get that. Can someone help me. It is known

    asked by Mike
  43. BIOCHEMISTRY

    BY CALCULATIONS HOW WOULD I PREPARE 200ml of 80% GLYCEROL (V/V)

    asked by ZANELE
  44. biiochemistry

    showing by calculations how would i prepare the following solutions : 200ml stock solution of 1M NaOH (mwt 40g/mol)

    asked by ZANELE
  45. Chemistry

    A student dissolves 18.9 grams of Zn(NO3)2 [molar mass = 189] in enough water to make 500.0 of solution. A 100.0 ml portion of this solution is diluted to 1000.0 ml.What is the [NO3¯ ] in the second solution? A) 0.0100M B) 0.0200M C) 0.0300M D) 0.0400M E)

    asked by Paul
  46. Chem

    HA(aq)+ H2O (l) H3O+(aq)+ A¯ (aq) Given the reaction above, which of the following will cause an increase in the pH of an equilibrium mixture? Give all answers which apply. A) add KA B) add HA C) remove A¯ D) remove HA E) none of these will affect the

    asked by Michael
  47. cell phone

    Cell Phone Cell phones let you make or take calls wherever you happen to be. A third of the world’s population now makes their phone calls this way, and around 3 billion cell phones are in use worldwide. Screen: has a 176 x 220 pixel display that can

    asked by cell phone
  48. Algebra

    (8x^3 - 14x^2 - 27x - 9) / (4x + 3)

    asked by Tammy
  49. Science/ Physics

    An airplane is traveling km/h in a direction 41.5 degrees west of north. (a) find the cmpopnets of the velocity in the northerly and westerly directions. (b) How far north and how far west has the plane traveled after 3.00 h?

    asked by Kim
  50. science

    A projectile is fired with an initial speed of 120m.s' at an angle of 60' above the horizontal from the top of a 50m high cliff. (a) determine the maximum height(above the cliff) reached by the projectile (b) how long it takes to fall to the ground from

    asked by Mykmoloko
  51. RADICAL EXPRESSIONS/ALGEBRA 2

    Hi. I pretty much have the answer for these problems that I worked out just need to know if there right. Thank you all! 16ã27 + 7ã108 = 90ã3 16ã9ã3 + 7ã36ã3 16 . 3ã3 + 7 . 6ã3 (48 +42)ã3 90ã3; And ã600x^4 = ã100 .

    asked by AMY
  52. science

    A projectile is fired with an initial speed of 120m.s' at an angle of 60' above the horizontal from the top of a 50m high cliff. (a) determine the maximum height(above the cliff) reached by the projectile (b) how long it takes to fall to the ground from

    asked by Mykmoloko
  53. Maths

    Solve the equation: Give your answer as a fraction in its lowest terms: 2x-5=7-6x I'm getting -1/3 but i think that's wrong!?! Would appreciate some help please thanks! M

    asked by Marian
  54. science

    Suppose that you hold a garden hose on the ground. It spurts water at a speed of 6,0m.s' (a) at what angle (to the horizontal) should you hold the hose pipe if you want to water plants 2m away? (b) explain why there are two possible angles?.

    asked by Mykmoloko
  55. chemistry

    How much NH3 can be produce from 20 liter 32,5 wt%(NH2)2CO (urea) aqueous solution. The reaction path way is : (NH2)2CO +H2O= 2NH3+ CO2 Thanx

    asked by Paul
  56. Maths

    Solve the equation, give your answer as a fraction in its lowest terms: x-2= 4x+7/6 (the whole part 4x+7 is over the 6) I'm getting -6 !!

    asked by Marian
  57. ALGEBRA...HELP!!!!!!

    Still cant figure this out (8x^3 - 14x^2 - 27x - 9) / (4x + 3)

    asked by Tammy
  58. Maths

    Y is directly proportional to x If y= 10 when x=-5 what is the value of y when x =30. The answer should be a number.

    asked by Beth
  59. maths

    This question is about plotting two points and drawing the straight line through them. Which two options are correct instructions for plotting two points which can then be used to draw the line y=2x+5. Select one or more. A) Plot the points (1.3) and

    asked by Marian
  60. maths

    Select the option that is the equation y=2x-2 rearranged to make x the subject of the equation. Select one: x=y+1 or x=-y/2+1 or x=-y+1 or x=-y/2-2 or x=y/2=1 or x=y-2 or x=-y-2              

    asked by Marian
  61. Algebra

    $3,800 principal earning 2%, compounded quarterly, after 7 years

    asked by Presley
  62. maths

    I've put what i think are the answers at the bottom. Consider the inequality −2 ¡Ü d 

    asked by Marian
  63. math

    Use front-end estimation to find the value of the expression. 73,811 ÷ 462 =

    asked by anonymous
  64. maths

    I've put what i think are the answers at the bottom. Consider the inequality −2

    asked by Marian
  65. Math

    paper = 10 point, 10 off for each day late. student missed 5 out of 10 and was 3 day late. what is the score?

    asked by Kathryn
  66. Chemistry

    What is the pOH of a solution which has a [H+] = 1.0 × 10¯³M?

    asked by Tony
  67. Geometry

    Determine which set of numbers can be the lengths of the sides of a triangle. a. 13, 10, 16 b. 1, 2, 3 c. 5.2, 11, 4.9 d. 208, 9, 219 I believe the answer is a. 13, 10, 16. Is this right?

    asked by Cheryl
  68. math

    For a party, Mary has to bake 5 cakes, 3 pies, and 4 trays of cookies. One cake requires 2.5 cups of flour, one pie requires 1.25 cups of flour, and one tray of cookies needs 0.75 cups of flour. How much flour in all does Mary need to do the baking for the

    asked by anonymous
  69. chemistry

    if you mix 50ml of 0.1 tris acid with 60ml if 0.2m tris base, what will be the resulting pH?

    asked by ashley
  70. the Civil War

    Who won the battle of Fort Sumter?

    asked by ms. T
  71. Math

    Determine which points are the vertices of a triangle. a. A(-3,-1), B(0,0), C(3,1) b. H(-4,2), J(4,-2), K(-12,6) c. P(2,4), Q(1,1), R(0,-6) d. W(0,5), X(0,-1), Y(0,-5) Can someone help me with this because I don't understand where to start?

    asked by Cheryl
  72. business accounting

    Why does frequent feedback and recognition have a more powerful impact on long-term performance than a review once a year accompanied by a merit pay increase? Create a Rewards and Recognition Program. Illustrate your ideas and information with examples of

    asked by Denese
  73. computer science

    can please help me to fill this: In the TCP/IP model, the best path through the network is determined at the ______________ layer. In the OSI model, the same function is carried out at the ______________ layer.

    asked by Sue
  74. computer science

    The following is a possible XML description of a reference. From the options listed below choose the most appropriate statement about the accuracy of the use of XML in the description. Compton, R. 2010 SOA explained Retail Management vol. 14 no. 6, June

    asked by Ramond
  75. business accounting

    can anyone help me with ideas for motivational theories that will impact both management and employees. for a powerpoint

    asked by Denese
  76. Dissappering Answers

    Hi Jiskha! I was wondering why I see answers from people like: Ms. T and Alica Cunn And 5 minutes later there are gone! Why did that happen? Can I do that too? Thanks! Aimme

    asked by Aimme J. Keller
  77. answers

    how do you know when your question is answer

    asked by Denese
  78. Physics

    The value of a real-world resistor ______ changes with significant time as the resistor conducts a current. never rarely sometimes usually

    asked by Jennifer
  79. PHY

    Ok...I know this is a stupid question, but I need help! Ok, here it is: An object that has more electrons than it does protons will be _____ a CL^-1 ion. repelled by attracted to unaffected by I know that opposites attract and that same repells, but I am

    asked by Amber
  80. Spanish-8th grade

    Could someone please check if I answered these questions correctly? Thank you Please let me know if I did anything wrong. ¿Hay un supermercado cerca de tu casa? Si, hay un supermercado cerca de mi casa. ¿Qué necesitas hacer hoy? Necesito estudiar hoy.

    asked by Jessie
  81. Physics

    Two cars are drag racing, starting from rest at t = 0, on a straight and level road. Team Alpha's car produces acceleration ax = alpha t^(-1/2) ; while Team Beta's car produces acceleration ax = Beta ; for all t > 0, where alpha and beta are positive

    asked by Abi
  82. CRIMINOLOGY

    What types of social and environmental factors might cause someone to engage in white collar crime?

    asked by kathy
  83. History

    Is my 2 paragraph essay error free? I have double checked it in my Word document but I wanted to triple check! :-) Thanks! Fort Sumter Loss This battle was located in South Carolina, from April 12th to the 14th later that month in 1861. The Confederacy

    asked by Kate Moreuo
  84. Calculus

    On what intervals is the function f(x)=x7−7x6 both decreasing and concave up?

    asked by Laurin
  85. business accounting

    Examples to illustrate your understanding and application of each level of the Maslow model. i need some powerpoint idles

    asked by Denese
  86. chemistry

    how do you Prepare a 0.1 L of a 0.1 M NaCl solution, and describe the process in writing.

    asked by jack
  87. chemistry

    how do you Prepare a 0.1 L of a 0.1 M NaCl solution, and describe the process in writing.

    asked by jack
  88. business accounting

    can someone help me with some poniter on Give examples of motivational factors for each level of Maslow's Hierarchy of Needs pyramid.

    asked by Denese
  89. Calculus

    Given a power function of the form f(x)=axn, with f(3)=20 and f(9)=1620, find n and a

    asked by Alyssa
  90. world history

    The decline of Tibet as a powerful kingdom happened? a. at the same time as the decline of the Tang dynasty b.during the Sui dynasty c. after the collapse of the Tang dynasty d. before the decline of the Tang dynasty

    asked by Jesss
  91. CRIMINOLOGY

    Manson did not actually commit the act of murder; he convinced his followers to carry out those actions. What about his social and environmental factors do you believe could have made him able to pursuade people to commit murder?

    asked by kathy
  92. world history

    Which of the following is a chinese school of thought that denounced ethics in favor of obedience? a. daoism b.legalism c. buddhism d. confucianism

    asked by Jesss
  93. Chem

    Write the balanced net ionic equations for the reaction of a) added H+ and B) added OH- with the components of the acetic acid/sodium acetate buffer solution:

    asked by Bubba
  94. ALGEBRA

    FIND A POINT-SLOPE FROM THE EQUATION OF THE LINE SATISFYING THE CONDITIONS. SLOPE -2, PASSING THROUGH (2,8)

    asked by TRACY
  95. forensics

    what are 10 real songs that have the words “photo”, “picture”, “scene”, “sketch”, “video”, or “evidence” in the title of the song.

    asked by forensics
  96. chemistry

    A sample of helium gas has a volume of 325l at 25c and at 5atm. At what temperature the gas can be compressed at 50atm to a volume of 125L?

    asked by twynna
  97. chemistry

    The volume of a gas is 435ml at 25c and at 740mmHg.What would be its new volume at STP?

    asked by twynna
  98. chemistry

    How many moles of argon gas are present in 70l of volume with a pressure of 280atm at 21c?

    asked by twynna
  99. chemistry

    what is the % mass/volume (%W/V)of KOH in 60ml of a solution that contains 5gn of KOH?

    asked by twynna
  100. Phycology

    provide an example of how one domain of development impacts the other one

    asked by Lana
  101. chemistry

    How many moles of KBr are there in 35.8ml of a 0.172M solution?

    asked by twynna
  102. physcial science

    during a test crash an air bag inflates to stop a dummys forward motion . the dummys mass is 75 kg.if the net force on the dummy is 825 n toward the rear of the car, what is the dummys deceleration

    asked by Anonymous
  103. chemistry

    How many moles of KBr are there in 35.8ml of a 0.172M solution?

    asked by twynna
  104. chemistry

    How many grams of NaOH are there in 2.5L of a 0.343M solution?

    asked by twynna
  105. algebra

    on three consecutive passes a football team gains 7 yards, loses 22 yards, and gains 33 yards, what number represents total yardage?

    asked by Lin
  106. algebra 2

    find the average rate of change for the function f(x)=60x-3x^2 between x=6 and x=19

    asked by katie
  107. physics

    If your car accelerates from rest at a steady rate of 4 m/s2, how soon will it reach 81 km/h (50.3 mph or 22.5 m/s)?

    asked by olga
  108. physics

    How would your Mars weight compare to your earth weight if the acceleration due to gravity on Mars is 3.71 m/s2?

    asked by olivia
  109. Science

    Determine the number of grams of KNO3 which will dissolve in 100 grams of H20 at 100 degrees celscius?

    asked by Jessica
  110. physics

    three spheres, each with a negative charge of 4.0*10^-6 C, are fixed at the vertices of an equilateral triangle whose sides are 0.20m long. Calculate the magnitude and direction of the net force on each sphere. So far i have drawn a diagram and used the

    asked by Diana
  111. physics

    Locomotive exert on a 13160-kg boxcar to make it accelerate forward at 0.40 m/s2. How long will it take the boxcar to reach its cruising speed of 105 km/h (65.2 mph or 29.2 m/s)?

    asked by olivia
  112. physics

    Two identical small spheres of mass 2.0g are fastened to the ends of an insulating thread of length 0.60m The spheres are suspended by a hook in the ceiling from the centre of the thread. The spheres are given identical electric charges and hang in static

    asked by Diana
  113. HISTORY

    Which of the following was NOT a reason that slavery became more broadly used in Virginia after Bacon's Rebellion? a. the economic incentives made by the British government b. the increasing survival rate of all people in the region c. the declining price

    asked by T-Baby
  114. Chemistry

    Write and balance an equation for a reaction in which iron (Fe) and hydrochloric acid (HCL) reacto to form iron chloride (FeCl2) and hydrogen (H2)

    asked by Sadie
  115. algebra

    2x+(x-y)^3 when x=9 and y=7 This problem is from a test review sheet (answer included)I have almost filled a notebook trying to solve this.

    asked by Vikki
  116. physics

    A sprinter can reach a speed of 12 m/s in 0.96 s. If the sprinter’s acceleration is constant during that time, what is the sprinter’s acceleration?

    asked by olga
  117. Economics

    Why is restriction of trade likely to reduce material welfare

    asked by Anonymous 2
  118. science

    What instrument is used to accurately measure time it takes for a stone to drop 2metres? I am in yr 7

    asked by Eleanorah
  119. chemistry

    the shape and nonding in a Br2 molecule is best described as

    asked by ashley
  120. Phys

    The value of a real-world resistor ______ changes with significant time as the resistor conducts a current. never rarely sometimes usually I think either never or rarely, but I'm not sure. When you unplug the resistor, the Ammeter and Voltmeter reading

    asked by Jennifer
  121. sciene

    A kid applies a force of 70 N to a ball over 1.1 meters. How much work did he do on the ball?

    asked by brittany
  122. Spanish

    Does anyone here know Spanish? I am trying to divide the word "profesora" into morfemas. At first I thought it might be prfesor-a, but I don't think that is correct? Is it possible that it is just one simple word? Can anyone help with this?

    asked by Mike
  123. cryptology

    Who is Anthony Babington? (include the manner of his death)

    asked by TITI
  124. The Odyssey book nine project help

    So, I'm creating a project for Book Nine of the Odyssey, and, I need some ideas. facts: It's a childrens book, so grades 4-5, you have to make it interesting and the info must be accurate.. My question is.. What are some ideas that I could use to make my

    asked by Allyson
  125. AP Physics

    A transverse wave is traveling with a speed of 500 m/s on a horizontal string. If the tension in the string is increased by a factor of 2, what is the speed of the wave?

    asked by James
  126. finance

    In computing the cost of common equity, if D1 goes downward and Po goes up, Ke will

    asked by leo
  127. physic

    A small car with a mass of 950 kg travels northward at 30 m/sDoes the car have more or less momentum than a truck with a mass of 10000 kg traveling eastward at 16 m/s?How much more or less?.

    asked by Anonymous
  128. middle school social studies

    i Choose "A" is this correct???........Anne Hutchinson questioned all the following ideals of the Massachusetts Bay Colony EXCEPT a. the notion that women should be inferior in matters of religion. b. the notion that salvation came from being a member of

    asked by Anonymous
  129. Chemistry

    2 CO (g) + O2 (g) --> 2 CO2 (g) The mechanism below has been proposed for this reaction; (slow) O2 + CO --> CO2 + O (fast) O + CO --> CO2 Based on this mechanism what is the rate law for this reaction?

    asked by John
  130. Chemistry

    Determine the number of grams of water which are required to dissolve a mixture of 25 g of KNO3 and 2.0 g of CuSo4 * 5H20 AT 100 Degrees celscius?

    asked by Jessica
  131. science

    if a dog runs 6 meters in 1 second and then at the end of the second second the dog ran an additional 4 meters. what would describe the dogs motion in both seconds

    asked by Anonymous
  132. french

    ton cahier est le_______{mieux,meilleur}which one should i use?

    asked by godwin
  133. history

    what form of government was ancient egypt?

    asked by Sara!
  134. 4th grade fractions

    Ms. Ross's class has 23 students.2/3 of her students have brown hair. The rest have blond hair. How many students have brown hair?

    asked by Tiea
  135. history

    how did ancient egypt become so dominant and how did it decline?

    asked by Sara!
  136. Physical therapy aide

    A pta can supervise a physical therapy aide to perform all of the following except

    asked by Shannon
  137. AP Physics

    At a height of 5 meters above the surface of a freshwater lake, a sound pulse is generated. The echo from the bottom of the lake returns to the point of origin 0.140 s later. The air and water temperatures are 20°C. How deep is the lake?

    asked by Alan
  138. advanced funtions

    describe the similarities and differences between y=x^2 and a power funtion with a even degree higher than two?

    asked by balasaba
  139. Math

    can please someone help me to solve this question: 18 MB of data are to be transmitted over a 4 megabits per second connection. How long should the complete transmission take, to the nearest 0.1 s?

    asked by Ramond
  140. math

    What is the value of 3/14 rounded to the nearest fourth?

    asked by Kyle
  141. math

    write 5 names for 0.75

    asked by sopiu
  142. algebra word problems

    A window is shaped like a rectangle whose perimeter is 294 in. The length is 6 times as long as the width. Find the length

    asked by shelia
  143. types of business writing

    what is the answer to penn foster exam 02800601

    asked by tj
  144. History

    which empire was dominant? was it Greek or Egypt??

    asked by Sara!
  145. AP Chemistry

    What is the chemical equation that corresponds to the standard molar enthalpy of formation of N2O?

    asked by jules
  146. geometry

    a rectangular box has dimensions 9cm by 6 cm by 24 cm. a second rectangular box has volume one-half of the first and has a base 6 cm by 4 cm.what is the height of the second box

    asked by ann
  147. AP Chemistry

    what is the oxidation state of iron in K4[Fe(CN)6]?

    asked by jules
  148. business accounting

    is there a web sit that will help we with. What does a manager have to do to get an employee's needs met at one level of Maslow's pyramid so they can progress to another level of the pyramid.

    asked by Denese
  149. geometry honors

    if the volume of the pyramid is 64 feet cubed and the height is 16 feet what is the area of the base measured in square inches?

    asked by erin
  150. cultural diversity

    what is acculturation

    asked by m
  151. Shurley Englich

    Classify the word "Were" in "Were the frightened animals hiding during the storm yesterday?

    asked by Marsha
  152. Survey of the sciences

    Show that one mole of sugar equals 342 grams.

    asked by Stephanie
  153. Shirley English

    Is the word "during" a preposition in "Were the animals hiding during the storm yesterday."

    asked by Marsha
  154. PHYSICS PLEASE HELP

    An astronaut in his space suit and with a propulsion unit (empty of its gas propellant) strapped to his back has a mass of 134 kg. During a space-walk, the unit, which has been completely filled with propellant gas, ejects some gas with a velocity of +32

    asked by maria
  155. physics

    A 73.0 kg box slides down a 30.0 ramp with an acceleration of 3.60 m/s2. Find ìk between the box and the ramp. The acceleration of gravity is 9.81 m/s2 .

    asked by hh
  156. jayne

    Five socks, colored blue, brown, black, red, and purple are in a drawer. how many combinations of three socks can be randomly selected from the drawer?

    asked by Math
  157. Physics

    A lumberjack (mass = 98 kg) is standing at rest on one end of a floating log (mass = 220 kg) that is also at rest. The lumberjack runs to the other end of the log, attaining a velocity of +3.5 m/s relative to the shore, and then hops onto an identical

    asked by hy
  158. Survey of the sciences

    When the hydronium ion comcentration of a solution equals 1 mole per liter, what is the pH of the solution? Is the solution acidic or basic?

    asked by Stephanie
  159. Bio

    I am trying to lable a Paramecium I know for a plant cell, the outer "layer" is called the cell membrane. what would the name for it be on a Paramecium? I have tried looking it up but the diagrams are confusing thanks!

    asked by Dawn
  160. math

    im in the 5th grade and i need help is on metric measures and conversoins

    asked by brian
  161. math

    what is 1/6 hour later than5:55

    asked by Anonymous
  162. Bio

    I am trying to lable a Paramecium I know for a plant cell, the outer "layer" is called the cell membrane. what would the name for it be on a Paramecium? I have tried looking it up but the diagrams are confusing thanks!

    asked by Dawn
  163. Trig

    Are 120 and -240 coterminal?

    asked by Isabella
  164. math

    A student planning her curriculum for the upcoming year must select one of four business courses, one of four mathematics courses, two of ten elective courses, and either one of four history courses or one of four social science courses. How many different

    asked by Nicole E
  165. chemistry

    what are the halogens at 25 degrees celcius and 1atm?

    asked by jules
  166. Math

    True or False? If the inverse function of f exists, and the graph of f has a y-intercept, the y-intercept of f is an x-intercept of f^-1

    asked by Sam
  167. PreCalculus

    (R=restaurant) If R1 is 480-8t-0.8t^2 and R2 is 254+0.78t, how would I write a function (R3)that represents the total sales for the the two restaurants?

    asked by Dave
  168. BioChemistry

    Write the oxidation equation for sec-butyl alcohol. How do I do this?

    asked by Tia
  169. geometry

    In the figure shown (sorry no diagram, but description below), NK and ML are parallel, JN=10 feet, NK=14 feet, JL=22 feet, and ML=24. Find KL. Its a triangle with JN and NM on the left side and JK and KL on the right side. NK is a horizontal line in the

    asked by shb
  170. BioChemistry

    Write the oxidation equation for sec-butyl alcohol. How do I do this?

    asked by Tia
  171. Mathematics

    The suggested retail price of a new car is p dollars. The dealership advertised a factory rebate of $1200 and an 8% discount. How would I write the function R in terms of p giving the cost of the car after receiving the rebate from the factory?

    asked by Steve
  172. English

    Can you please check these sentences? Thank you very much 1)King Philip II of Spain plans to take over England and wants his daughter to become Queen of England in Elizabeth's place. 2) On the other hand, Elizabeth is pressured (or pressurized)? to get

    asked by Franco
  173. Math

    H(x)= 0.002x^2+0.005x-0.029 where x is the speed of the car in miles per hour. How can I rewrite the function so that x represe the speed in kilometers per hour. [Find H(x/1.6)]

    asked by Ethan
  174. chemistry

    How many milligrams of a mixture containing equal numbers of moles of CH4 and N2 at 10 ATM total pressure will dissolve in 1 L of water at 20°C ??? Convert 16g/mol CH4 28g/mol N2 ???need density .998g/ml H2O

    asked by Neil
  175. fhfhfhfh

    Suppose there is a rectangluar backyard that measures 15 x 20 meters, what is the area of the yard

    asked by fffhfhfhh
  176. Math

    If M(t)=29.9t^2+3892, where t=0 represents 1990. How would I describe the transformation of the common function f(t)=t^2. How can I rewrite the function so that t=0 represents 2000.

    asked by Caroline
  177. Math

    7/10 of your body is made of water. Is more than 1/2 of our body water? Explain. How do you start this

    asked by Gio
  178. Calculus

    A right triangle has one leg on the x-axis. The vertex at the right end of that leg is at the point (3,0). The other vertex touches the graph os y=e^x. the entire triangle is to lie in the first quadrant. Find the maximum area of this triangle.Justify your

    asked by Amanda E.
  179. Rounding Decimals

    Use the digits 0,2,5 and 8. Write a decimal that will round up if rounded to the nearest whole number, round down if rounded to the nearest tenth, and round up if rounded to the nearest hundredth.

    asked by Irene
  180. beginning algebra

    The length of a rectangle is 1ft more than twice its width, and the area of the rectangle is 28ft^2 . Find the dimensions of the rectangle. l= w=

    asked by Rachal
  181. Rounding Decimals

    Marley and Hassan rounded the number 7.483. Marleys answer was greater than 7.438. Marleys answer was greater than 7.483, and Hassan's anser was less. Towhat place might the number have been rounded by Marley? By Hassan? Explain.

    asked by Iris
  182. Statistics-desperate

    I don't know how to post some of the question is there a way I can upload it?

    asked by Rachal
  183. Physics

    A block moving to the right at 12 m/s is placed on a surface having a friction coefficient of 0.3. Find the time in seconds it takes for the block to stop.

    asked by Logan
  184. Physics

    Hello, I am doing a physics experiment regarding rotational motion and equilibrium. We have the following lab setup and are supposed to find the unknown mass. How should I approach this? file:///C:/Users/Rahul/Desktop/Lab%20Drawing.jpg

    asked by Rahul
  185. Science

    A block of ice of mass M is pulled horizontally with a steady force P against a force of friction F I have to write an equation for the acceleration of the block.

    asked by Tyler
  186. Chemistry

    A sample of nitrogen gas occupies 1.55 L at 27oC and 1 atm pressure. What will the volume be at -100oC and the same pressure?

    asked by Alyssa
  187. MATH PLEASE HELP!

    True or False? If the inverse function of f exists, and the graph of f has a y-intercept, the y-intercept of f is an x-intercept of f^-1

    asked by Sam
  188. Math

    Please Help! (R=restaurant) If R1 is 480-8t-0.8t^2 and R2 is 254+0.78t, how would I write a function (R3)that represents the total sales for the the two restaurants?

    asked by Dave
  189. Math

    The suggested retail price of a new car is p dollars. The dealership advertised a factory rebate of $1200 and an 8% discount. How would I write the function R in terms of p giving the cost of the car after receiving the rebate from the factory? I TRULY

    asked by Steve
  190. Math (Truly Need Help)

    H(x)= 0.002x^2+0.005x-0.029 where x is the speed of the car in miles per hour. How can I rewrite the function so that x represe the speed in kilometers per hour. [Find H(x/1.6)]

    asked by Ethan
  191. physics graphing help please

    (a) Write the equation for a transverse sinusoidal wave with a maximum amplitude of 2.5 cm and an angular frequency of 2.9 rad/s that is moving along the positive x-direction with a wave speed that is 5.00 times as fast as the maximum speed of a point on

    asked by Trace
  192. Social Studies

    How was the culture of the Ottoman rulers similar and different from the cultures of the people they ruled in Southwest Asia? Plase help me with this question its confusing me so much!

    asked by Emily
  193. math

    wirte four names for 13.

    asked by Jada
  194. Math

    how do i do volume of a 3d shape

    asked by Simone
  195. chemistry

    % recovery: how do i calculate it? we're doing a recrystallization in chem class we used 0.1 g and we recovered 0.3 g how do i calculate the percent recovery?

    asked by jessie
  196. Science

    why is high blood pressure called the "silent killer"? What might happen if you have a high blood pressure?

    asked by Erika
  197. Question

    Does it have to be about math?

    asked by Julia
  198. science

    why is high blood pressure called the "silent killer"? What might happen if you have a high blood pressure?

    asked by Erika
  199. Math

    How do you find the solution to this system of equations? y=x+2 y=x(squared)

    asked by Jillian
  200. math

    what does squared and cubed mean?

    asked by Julia
  201. algebra

    a hockey team played n games, losing four of them and winning the rest. What is the ratio of games won to game lost

    asked by aziz
  202. Science/Health

    What might happen if you have a high blood pressure????

    asked by Erika
  203. history

    what were the similarites and differences between the greek and egyptian empire?

    asked by Sara!
  204. Math

    x^+y^=36 y=x+2 Find exact solution for the system of equations

    asked by Jillian
  205. chemistry

    in this experiment about recrytallization im having a strange problem with the calculations. we used 0.1 gram of impure unknown, but we recovered 0.3 gram of purified unknown. so to get % recovery: isnt it like this? 0.1-0.3/0.1 x 100 = -200? please help!

    asked by jessie
  206. Science

    Will adding30g of SO2 to 100g of water at 0 degrees C create a staurated solution? Explain

    asked by Anonymous
  207. advanced funtions

    describe the similarities and differences between y=x^2 and a power funtion with a even degree higher than two? please help me!!!

    asked by balasaba
  208. ap. history

    How did overproduction, under consumption, and stock market speculation lead to the stock market crash of 1929 and the Great Depression?

    asked by Asher
  209. Physics

    A capacitor consists of a set of two parallel plates of area A separated by a distance d. This capacitor is connected to a battery that maintains a constant potential difference between the plates and has charge Q1. If the separation between the plates is

    asked by Sam
  210. U.S history

    What importance did the passage of the Social Security Act play in the second New Deal?

    asked by Asher
  211. pre-cal/ algebra

    how is the transformation y=f(x+3)^2+2 affected. f(x) has the vector of (2, -6) so it would move left 3 units and up 2 so the new vector would be (-1,-4)... is that correct

    asked by Nayyab
  212. World Geography

    What are three ways geography influenced Roman History?

    asked by Hannah
  213. math

    four guys scored 1 1/2,8 3/4,5 1/8 and 1 1/4 points for their team what is the total number of points they scored?

    asked by sugarman
  214. chemistry

    Imagine a hypothetical reacion for which, H = 0 kJ · mol−1. Considering the Le Chatelier principle, which of the following statements is true? a. Raising the temperature of the system will have no effect. b. Raising the temperature of the system will

    asked by Eddy
  215. chemistry

    For the reaction 4NH3(g) + 3O2(g) -> 2N2(g) + 6H2O(g) , K = 10^80 at a certain temperature. Initially, all reactants and products have concentrations equal to 12 M. What is the approximate concentration of ammonia at equilibrium? a. 3 M b. 12 M c. 18 M d.

    asked by Eddy
  216. algebra

    The area of a rectangular athletic field is represented by the expression 16y^7+32y^5+80y^3 square meters. Write an algebraic expression to represent one possible set of dimensions (in the sense “length times width”) of the athletic field. Include

    asked by Rihanna
  217. Math

    Which fraction is equal to 1/5? A.2/10 B.3/10 C.1/15 D.2/15 Can you show me the steps?

    asked by Joe
  218. math

    how do you write seven names for 8.Using only numbers less then 10 and using at least three different operations in each name.Using also parentheses.?

    asked by suzie
  219. Math

    Explain why 1/8 is greater than 1/10, but less than 1/3.

    asked by Nina
  220. history

    where the athens greek??

    asked by Sara!
  221. CHemistry

    The vapor pressure of an organic solvent is 50 mm Hg at 25°C and 200 mm Hg at 45°C. The solvent is the only species in a closed flask at 35°C and is present in both liquid and vapor states. Determine the mole fraction of solvent in the gas phase.

    asked by Anonymous
  222. U.S history

    What was the Wagner Act and how did it lead to the rise of industrial unionism?

    asked by Asher
  223. math

    lim x->2 [((6-x)^1/2)-2] _______________ [((3-x)^1/2)-1]

    asked by quoc
  224. math

    lim x->2 [((6-x)^1/2)-2] _______________ [((3-x)^1/2)-1]

    asked by quoc
  225. math

    lim x->2 [((6-x)^1/2)-2] _______________ [((3-x)^1/2)-1]

    asked by quoc
  226. CRIMINOLOGY

    There are people who believe that for diseases such as autism, a change in diet can alter the severity of the symptoms. Your point also brings up a discussion of the myth of the "Twinkie defense". Do you think that this type of defense has merit? Why or

    asked by kathy
  227. Physiology

    A patient’s blood cell count shows 15,000 white blood cells (WBCs) per µL of blood. A normal WBC count is about 9,000 cells/µL (the normal range is actually 4,000 to 11,000 WBCs/µL). What percent of normal is this particular patent’s WBC count?

    asked by Ivy
  228. Physics

    A class of 11 students taking an exam has a power output per student of 124 W. Assume that the initial temperature of the room is 18.7°C and that its dimensions are 6.00 m by 14.5 m by 3.40 m. What is the temperature (in °C, do not enter units) of the

    asked by Kelsey
  229. Physiology

    Obesity is defined medically as 20% above a person’s ideal weight. If a person’s ideal weight is 72 kg, when (above what weight) would that person be considered obese? ________________kg

    asked by Ivy
  230. Physiology

    If a man’s ideal weight is 165 lbs. and he weighs 185 lbs., how many pounds above his ideal weight is he? What percent above his ideal weight is he? ______________lbs. above ideal weight ______________% above ideal weight

    asked by Ivy
  231. math

    1 1/2+ p)*2^2=12 what is p?

    asked by kelly
  232. business math

    Bob makes his first deposit into an IRA earning % compounded annually on the day he turns 27 and his last deposit on the day he turns 35. (9 equal deposits in all.) With no additional deposits, the money in the IRA continues to earn % interest compounded

    asked by lauren
  233. math

    The sum of the measures of the three angles of any triangle is 180°. In the illustration, the measure of 2 (angle 2) is 7° larger than the measure of 1. The measure of 3 is 31° larger than the measure of 2. Find each angle measure.

    asked by kylie
  234. math

    What are all the angles in each garden if there are two similar squares

    asked by whitney
  235. math

    96 words typed in 3 minutes

    asked by Anonymous
  236. Math - Please Help

    Find two positive fractions such that if we switch the denominators, the sum afterthe switch is 50 times the original sum.

    asked by qwerty123
  237. business math revised

    Bob makes his first $800 deposit into an IRA earning 7% compounded annually on the day he turns 27 and his last $800 deposit on the day he turns 35. (9 equal deposits in all.) With no additional deposits, the money in the IRA continues to earn 7% interest

    asked by lauren
  238. statistics

    A sample of n=5 scores has a mean 50. Another sample has n=10 scores and a mean of 60. If the two samples are combined, will the combined sample mean be greater than 55

    asked by Carrie
  239. Physics

    An ideal spring has the spring constant k = 395 N/m. Calculate the distance this spring must be stretched from its equilibrium position for 28.9 J of work to be done.

    asked by Em
  240. physics

    The potential energy at point D at x = 8 m is -2000 V and at point B at x = 2 m is +400 V. What is the magnitude and direction of the electric field?

    asked by Alex
  241. math

    y=2x-2 y=x+2

    asked by Anonymous
  242. Algebra

    Please help me solve for the following coefficients. The equation is: 2X-Y=4 if X = 0, then Y = ? if Y = 0, then X = ? if X = 1, then y = ? if Y = -6, then X =? Thanks!

    asked by Zach
  243. algebra

    How do you multipl (3a-2b)(4a+3b)??

    asked by nina
  244. hcs/335

    How might a manager deal with elements of an organization’s culture that are, or are perceived as, inconsistent? Please provide a clear and relevant example.

    asked by sammi
  245. Social Studies

    What is the definition for State Government?

    asked by Callie
  246. Africa

    What is a deep trench in the earth

    asked by Anonymous
  247. Social Studies

    What is the definition of National Government?

    asked by Callie
  248. Math

    3 LESS THAN TWICE X AND 2 MORE THAN THE QUALITY 3 TIMES X? I need the product?

    asked by Shun
  249. algebra

    Find value of x: x(x+2)=7

    asked by Frank
  250. math

    The ratio of boys to girls in a school choir is 4:3. There are 6 more boys than girls. If another 2 girls join the choir, what will be the new ratio of boys to girls????

    asked by Katherine
  251. to HELPER advanced funtions

    that answer wasn't the one I looked for. i didn't want to be mean so i reposted it. can you please help me! THANK YOU SO MUCH !! describe the similarities and differences between y=x^2 and a power funtion with a even degree higher than two?

    asked by balasaba
  252. physics

    The boy on the tower of height h = 20 m in the figure below throws a ball a distance of x = 52 m, as shown. At what speed, in m/s, is the ball thrown?

    asked by Anonymous
  253. chemistry

    You remember Dr. Laude saying something about how adding salt to water increases the boiling point. If you have 1 cup (8 fl. oz. = 250 mL = 250 g) of H2O, how much NaCl should you add in order to raise the boiling point to 105C?

    asked by jalyn
  254. Math

    use the digits 1,2,3, and 4 to write a number in scientific notation that is close to .001 this was in a 7th grade algebra book... what? is this even possible without the use of 0?

    asked by Tokey
  255. PHYSICS

    The value of a real-world resistor ______ changes with significant time as the resistor conducts a current. never rarely sometimes usually I think either never or rarely, but I'm not sure. When you unplug the resistor, the Ammeter and Voltmeter reading

    asked by Jennifer
  256. Math (Propogation)

    Consider an antenna transmitting a power of 5W at 900MHz. Calculate the received power at a distance of 2km if propagation is taking place in free space.

    asked by Nathan
  257. Math

    Consider an antenna transmitting at 900 MHz. The receiver is traveling at a speed of 40km/h. Calculate its Doppler shift.

    asked by Josh
  258. Pre Algebra

    I need help figuring out simple interest and the balance of an account. Example P = $525, r = 6%, t + 9 years

    asked by Caleb
  259. chemistry

    A 20.2g chunk of magnesium metal reacts with 13.7 g of oxygen gas to make magnesium oxide. Write the balance equation.

    asked by Kim
  260. Pre Algebra

    I need help figuring out simple interest and the balance of an account. Example P = $525, r = 6%, t + 9 years

    asked by Caleb
  261. AP Chem

    What mass of K2CO3 is required to clean up a spill of 282 ml of 1.05 M HCl if HCl(aq) reacts with K2CO3 according to 2HCl(aq) + K2CO3(aq) → 2KCl(aq) + CO2(g) + H2O(l)?

    asked by Sky
  262. Art

    what are some contemporary examples that utilize idealism?

    asked by Quentina
  263. math !!!! :O

    The ratio of boys to girls in a school choir is 4:3. There are 6 more boys than girls. If another 2 girls join the choir, what will be the new ratio of boys to girls????

    asked by Katherine
  264. U.S history

    how did the wagner act lead to the rise of industrialism unionism

    asked by Asher
  265. math

    6.4 - y = 6 2/5

    asked by kelly
  266. math

    6.4 - y = 6 2/5 what is y?

    asked by kelly
  267. math

    x=-2 output=12 x=1 output =9 x=4 output =6 help me solve

    asked by jack
  268. Desktop Publishing & Design :Illustrations

    1. To be truly effective in a publication, an illustration should A. appear in a darker shade or color than text. B. appear in a lighter shade or color than text. C. complement the document's layout and text. D. feature a thin, dark border. 2. What is the

    asked by Anonymous
  269. math

    x=-2 output=12 x=1 output =9 x=4 output =6 help me solve

    asked by jack
  270. math

    x=-2 output=12 x=1 output =9 x=4 output =6 help me solve

    asked by jack
  271. 5th grade math

    In 2000 the population of goddard was 5,554. The population of Valley Center was 7,323. What is the Approximate difference between the populations, to the nearest one hundred people. please! help I'm totaly confuse with this question?? do you substract it?

    asked by pat
  272. Human service

    What does the term Feminist mean, and what do you think it has come to mean to others, and what about from the same class or ethnic background?

    asked by Quentina
  273. JAVA

    How to enhance the Bank Account class by including free checking and saving accounts, withdraw methods and deducting monthly charge using Math.max(actual tranaction count, free tranaction count) in the computation.

    asked by Yassah
  274. 5th grade math

    Which answer shows data with a range of 49? A. 45,69,92,59 B. 95,59,52,89 C.99,66,51,52 D.55,99,78,50 if you select one of the answer .How do you solve the problem.? i was wonder how ?please explain your answer please!! so the next problem i try to solve

    asked by pat
  275. statistics

    A family therapist states that all parents in America talk to their teenagers an average of 17 minutes per week. A psychologist decides to test this by collecting data from a sample of 9 parents on how much time they spend talking to their teenagers per

    asked by fredia
  276. math

    A line segement from the center to any point on the circle is a _______? thanks Payton

    asked by Payton
  277. Physics

    A quarterback claims that he can throw the football a horizontal distance of 183 m (200 yd). Furthermore, he claims that he can do this by launching the ball at the relatively low angle of 35° above the horizontal. To evaluate his claim, determine the

    asked by Lindsay
  278. Physics

    An electron, initially at rest is accelerated through a potential difference of 550 V. What is the speed of the electron due to this potential difference?

    asked by Rusty
  279. Physics

    The potential difference between the plates of a parallel plate capacitor is 35 V and the electric field between the plates has strength of 750 V/m. If the plate area is 4.0 × 10-2 m2, what is the capacitance of this capacitor?

    asked by Rusty
  280. chemistry

    A steel tank containing helium is cooled to 15 C. If you could look into the tank and see the gas molecules, what would you observe?

    asked by Anonymous
  281. Math

    I am stuck on trying to figure out how to do this question. Could someone please show me 5 necessary steps ? Thank you. Here is how the assignment question is worded. Select any two integers between -12 and +12 which will become solutions to a system of

    asked by Tiffany
  282. Science

    Rocks exposed as glaciers melt absorbs more energy than it reflects TRUE or FALSE Please help me. This question is gonna be in my test tomorrow

    asked by Miley
  283. business math

    Stereo Inc. sells a stereo system for $300 down and monthly payments of $80 for the next 3 years. If the interest rate is 3.25 % per month, what is the cost of the stereo?

    asked by jack
  284. maths pre ap

    Krispy Krunch cereal is 49% sugar. about how many ounces of sugar are in a 16 oz box of Krispy Krunch?

    asked by alison
  285. stoichiometry

    Ammonia gas reacts with oxygen gas according to the following equation: 4NH3 + 5O2----4NO + 6H2O a. How many moles of oxygen gas are needed to react with 23 moles of ammonia? (29 mole) b. How may grams of NO are produced when 25 moles of oxygen gas react

    asked by Jonathan
  286. Geometry

    Write an indirect proof. Given:n^2 is even Prove: n^2 is divisible by 4.

    asked by Shadow
  287. math

    how do you write seven names for 8.Using only numbers less than 10,and using at least three different opperations in each name.(ALSO USE PARENTHESES FOR TWO OF YOUR ANSWERS) I NEED HELP ON THIS!! please and thank you

    asked by amy
  288. calculus, limits, l'hopital

    Using l'hopital's rule, find the limit as x approaches infinity of (e^(6/x)-6x)^(X/2) I know l'hopital's rule, but this is seeming to be nightmare. I just don't seem to get anywhere.

    asked by Kate
  289. Calculus

    Use the graph to estimate the limit: lim x->0 sin(3x)/x When x is in degrees lim x->0 sin(3x)/x = ________ I thought the the answer was (3*180)/pi but it's not... please help... Thanks

    asked by Abi
  290. Physics

    Two cars are drag racing, starting from rest at t = 0, on a straight and level road. Team Alpha's car produces acceleration ax = alpha t^(-1/2) ; while Team Beta's car produces acceleration ax = Beta ; for all t > 0, where alpha and beta are positive

    asked by Abi
  291. Science

    Why do scientists use models to study the movement of Earth and its moon?

    asked by Nalla
  292. Calculus

    Consider the function f(x)=sin(5x)/x. (a) Fill in the following table of values for f(x): x= -0.1 -0.01 -0.001 -0.0001 0.0001 0.001 0.01 0.1 f(x)= ( I need the values of f(x) for each x) (b) Based on your table of values, what would you expect the limit of

    asked by Abi
  293. math

    how do i write 7.8x10^7 in standard form?

    asked by angiie
  294. advanced funtions

    describe the similarities and differences between y=x^2 and a power function with a even degree higher than two? please help me!!! i wrote that the domain and range were the same for even funnctions. i wrote that they both share the vetical relfection

    asked by Anonymous
  295. History- Berlin Wall

    I posted my assignment below, but I don't want you to write me my article. I have started already, but I need someone to answer my question so I can write the rest of my paper. Please, if you HAVE to include links, just don't put Wikipedia. But try not to

    asked by Heather
  296. calculus, limits, l'hopital

    Using l'hopital's rule, find the limit as x approaches zero of (e^(6/x)-6x)^(X/2) I know l'hopital's rule, but this is seeming to be nightmare. I just don't seem to get anywhere. I mistyped the first time I posted this question.

    asked by Kate
  297. chemistry

    The vapor pressure of an organic solvent is 50 mm Hg at 25°C and 200 mm Hg at 45°C. The solvent is the only species in a closed flask at 35°C and is present in both liquid and vapor states. the system pressure is 760mmHg. Determine the mole fraction of

    asked by Anonymous
  298. Repost- Calculus; someone please help

    Please help out. Thank you. A right triangle has one leg on the x-axis. The vertex at the right end of that leg is at the point (3,0). The other vertex touches the graph os y=e^x. the entire triangle is to lie in the first quadrant. Find the maximum area

    asked by Amanda E.
  299. Engineering Economics

    Sensotech Inc., a maker of microelectromechanical systems, believes it can reduce product recall by 10% if it purchases new software for detecting faulty parts. the cost of the new software is 225000. 1- how much would the company have to save each year

    asked by Ating
  300. Physical science

    Compare the number of valence electrons an oxygen atom has with the number of valence electrons a selenium atom has. Are oxygen and selenium in the same period or group?

    asked by Anonymous
  301. chemistry

    If you have a 37.34g sample of ammonium chromate , how many protons do you have?\

    asked by T
  302. Physical science

    Compare the number of valence electrons an oxygen atom has with the number of valence electrons a selenium atom has. Are oxygen and selenium in the same period or group?

    asked by Anonymous
  303. Calculus

    Let f be the function defined for x >or= to 0 with f(0)=5 and f', the first derivative of f, give by f'(x)=e^(-x/4)sin(x^2). A) Use the graph of f' to determine whether the graph of f is concave up, concave down, or neither on the interval 1.7

    asked by Leanna
  304. Biology - Uncertainty

    I'm doing a bio lab, and I have collected data on heart rate measured in beats/15 secs with an uncertainty of +/- 1 beat/sec. To get heart rate per minute, I multiplied my data by 4, making my uncertainty +/- 4 beats/min. However, what I need to do now is

    asked by Stuck
  305. chemistry

    All of the lanthanide metals react with HCl to form compounds having the formula MCl2,MCl3,or MCl4 (where M represents the metallic element). Each metal forms a single compound. A chemist has .250g sample of a transition metal, and wishes to identify the

    asked by T
  306. Math

    On a die, the top and bottom numbers always add up to 7. What are the three pairs that each add up to?

    asked by Lauren
  307. physics

    a 60-kg patient exercise on the treadmill, exerting a constant force of 500N while running at a constant velocity of 4 m/s at an angle of 30 for 5 minutes. the coefficient of kinetic friction of the treadmill os 0.45. determine the work done by the

    asked by clariss
  308. math

    how do I find the value of |45-27/3x(5-8)|? the "/" means divide

    asked by angiie
  309. Math

    What is the ratio comparing the length in a drawing to the corresponding length of the object is called?

    asked by Lauren
  310. Calculus

    Consider the function f(x)=(4^x−1)/x. (a) Fill in the following table of values for f(x): x= -0.1 -0.01 -0.001 -0.0001 0.0001 0.001 0.01 0.1 f(x)= I the the falues of f(x) for each interval... (b) Based on your table of values, what would you expect the

    asked by Abi
  311. Calculus

    Consider the function f(x)=(4^x−1)/x. (a) Fill in the following table of values for f(x): x= -0.1 -0.01 -0.001 -0.0001 0.0001 0.001 0.01 0.1 f(x)= I the the falues of f(x) for each interval... (b) Based on your table of values, what would you expect the

    asked by Abi
  312. Engineerin Economics

    Sensotech Inc., a maker of microelectromechanical systems, believes it can reduce product recall by 10% if it purchases new software for detecting faulty parts. the cost of the new software is $$ 225000. 1- how much would the company have to save each year

    asked by Atem
  313. spanish/help please

    Can you help me write these numbers in spanish? -20,030,000 -14,559 -67,900,008 -200,700,100 1,432,626

    asked by mike
  314. science

    a neutron star, which is the remnant of an exploded massive star, consists of neutrons packing together with a total density of 3.03x10 14g/cm3. if you had a 1.40 cm3 sample of matter(about the size of a suger cube),what would its mass be?

    asked by bonnie
  315. Chemistry

    2 CO (g) + O2 (g) --> 2 CO2 (g) The mechanism below has been proposed for this reaction; (slow) O2 + CO --> CO2 + O (fast) O + CO --> CO2 Based on this mechanism what is the rate law for this reaction?

    asked by John
  316. geometry

    what is the shortest length of string that can be cut into all 5cm lengths, all 8cm lengths or all 10cm lengths?

    asked by Anonymous
  317. Chemistry- Drbob-help

    I have placed the answer I got please help. A student makes a solution by dissolving 55.8 grams of potassium hydroxide in 875.0 grams of water. The resulting solution has a density of 1.07 grams per milliliter. 1. What is the volume of this solution? 870mL

    asked by Paul
  318. Math

    Every week, Linda must stuff 1000 envelopes. She can do the job by herself in 6 hours. If Laura helps, they get the job done in 5 1 2 hours. How long would it take Laura to do the job by herself ?

    asked by Isa
  319. Physics

    The cake company truck is on it's way deliver a cake for a party when it rounds a curve of radius 20 m at a speed of 12 m/s. What coefficient of friction is needed between the cake pan and the truck in order to keep the pan from slipping? please show work!

    asked by coefficient of fric?
  320. Finance/Accounting

    How did the Sarbanes-Oxley Act affect the accounting profession? Did it change their relationship to businesses?

    asked by Sam
  321. urgent alg 1

    add or subtract 2 2 (2t -8t)+ (8t + 9t) second question 3 2 3 (t +8t ) + (-3t ) please helpp its urgent i have the answer butt im not suree pleasee helpp

    asked by kimberly
  322. math

    exmple of porportion and ratios in your daily lives.

    asked by sue