Newest questions and responses by ellie
  1. math

    How do I find the quotient of x/2y and (2xy)^2/9xy^3

    asked on March 8, 2019
  2. Science

    I need a explanation of why u choose to put each career with the specific skill, make sure to support your answer with proper reasoning and examples. Provide two more additional skills needed for each career. I need the answer to have all the scientific

    asked on January 22, 2019
  3. art social studies

    Which of the following did the development of linear perspective allow artists to do?

    asked on January 20, 2019
  4. Biology

    3. You begin with one cell that contains twelve chromosomes. This cell undergoes one mitotic division (you need to know the end result of mitosis to get this answer right). a. How many cells will you end up with after the cell divides? (1 point) b. How

    asked on January 10, 2019
  5. Algebra

    Jerry writes the expression 8(b-1) +10 for the number of tulips in each border,wherein b is the border number and b is more or equal to 1

    asked on September 22, 2018
  6. MAth

    What is the HCF of 52?

    asked on July 16, 2018
  7. Maths

    The perimeter of a rectangular pentagon which has a side of 12 cm

    asked on April 19, 2018
  8. modern world studies

    an isthmus is a(n) a. very tall mountain. b. unique land formation. c. body of water. d. flat grassland region.

    asked on March 15, 2018
  9. Geometry

    What is the ratio measures of the in-radius, circum-radius and one of the ex-radius of an equilateral triangle? (1) 1 : 2 : 5 (2) 1 : 3 : 5 (3) 1 : 2 : 3**** (4) 1 : 1.4142 : 2

    asked on March 8, 2018
  10. algebra

    Find the second, fourth, and tenth terms of the sequence described the the rule. A(n)=4+(n-1)(8)

    asked on May 24, 2017
  11. trig

    Find all solutions in the interval [0, 360) 8cos^2x+6cosx+1=0

    asked on April 23, 2017
  12. Math

    The pizza shop offers the top being shown below how many different three topping pizzas can you make pepperoni mushrooms sausage onion ham 6 10 4* 5

    asked on March 1, 2017
  13. ELA

    What is the best summary of the speakers basic message in Annabel Lee? I am heartbroken and I will never stop loving annabel lee.* Annabel Lee and I were friends from the time we were children. I am heartbroken I will and I will get revenge for Annabel

    asked on February 27, 2017
  14. Language arts

    What would you expect to be Downy? A diamond ring A baby rabbit * A pair of jeans A fallen pine cone In which sentence do the subject and verbs agree? Both cats and dogs sometimes gets fleas. Neither Philip nor Angie wants to cancel the show.* Automobiles

    asked on February 27, 2017
  15. Statistics

    I am having a really rough time figuring out how this expected value was found in this Chi Square problem. 272 flies had long normal wings 60 flies had dumpy wings I know it's going to be a 3:1 ratio, and I know that 272 and 60 are my observed variables.

    asked on February 9, 2017
  16. Physics

    Consider a child standing on a beach who gets hit by a wave. The child weighs 30 kg, and the portion of the wave that hits the child contained 60 kg water. If the wave had a period of 2 seconds and a wavelength of 6 meters, how fast will the child be

    asked on February 9, 2017
  17. Physics

    Some stoves use the heat produced by current flowing through a conductor. If the heating element (conductor) has a resistance of 30 ohms, how long will the burner have to work to heat 500 g of 30°C water up to its boiling point? The specific heat of water

    asked on February 7, 2017
  18. Geometry

    A sailboat is heading directly north at a speed of 16 knots (1 knot = 0.514 m/s). The wind is blowing towards the east with a speed of 10.4 knots. (Both velocities are given relative to the Earth.) Determine the magnitude and direction of the wind velocity

    asked on February 3, 2017
  19. math

    what is an equivalent fraction to 10/4 that starts with 90?

    asked on January 13, 2017
  20. Math

    what is an equivalent fraction for 7/6 that has a numerator of 84

    asked on January 13, 2017
  21. Math

    1. 2(x-3)=2x A. One solution B. No solutions C. Infinitely many solutions 2. 3(y-3)=2y-9+y A. One solution B. No solutions C. Infinitely many solutions 3. 10x-2-6x=3x-2+x A. One solution B. No solutions C. Infinitely many solutions 4. 4(x+3)+2x=x-8 A. One

    asked on December 21, 2016
  22. Math

    There were 20 at a round table at dinner, each of whom shook hands with the person on his or her immediate right and left.At the end of dinner, each person got up and shook hands with everybody except the people who sat to his or her immediate right or

    asked on December 13, 2016
  23. Social Studies

    Discuss the social reforms that shaped the nation in the 1800s. What do you think have been the lasting impacts of the Reform Era? How do these reforms influence society today? What do you think were the most important social reforms and why?

    asked on November 29, 2016
  24. Trig

    From a point A, 30 meters from the base of a building B, the angle of elevationto the top of the building C is 56 degrees. The angle of elevation to the top of flagpole D on top of the building is 60 degrees. Find the length of flagpole CD

    asked on November 20, 2016
  25. Math- HELP!

    If a population of fruit flies doubles every 3 days. What is k, the proportionality constant? How would I solve this problem? What would initial value be?? Thanks!

    asked on November 12, 2016
  26. math

    gas tank is 1/6 full. after pumping 9 gallons gas it is 5/6 full. how much gas does tank hold? How many gallons were first in the tank?

    asked on October 30, 2016
  27. Physics

    Consider the Bohr energy expression (Equation 30.13) as it applies to singly ionized helium He+ (Z = 2) and an ionized atom with Z=4 and only a single electron orbiting the nucleus. This expression predicts equal electron energies for these two species for

    asked on September 30, 2016
  28. Physics

    A hydrogen atom is in the ground state. It absorbs energy and makes a transition to the n = 5 excited state. The atom returns to the ground state by emitting two photons, one in dropping to n = 4 state, and one in further dropping to the ground state. What

    asked on September 30, 2016
  29. Physics

    Determine the ratio of the relativistic kinetic energy to the nonrelativistic kinetic energy (1/2mv2) when a particle has a speed of (a) 2.60 × 10-3c. and (b) 0.972c

    asked on September 30, 2016
  30. Math

    Why would you round to nearest 100 rather than nearest 10?

    asked on September 15, 2016
  31. Math


    asked on September 8, 2016
  32. math

    eight time a number is ten more than three times the number...please show your work

    asked on August 1, 2016
  33. Math- HELP!

    If f(x)=3x^2 -2x -3, let g(x)=f^-1(x). Find the slope of g(x)=f^-1(x) at the point (5,2). a.) g'(5)=1/10 b.) g'(5)=1/5 c.) g'(5)=1 d.) g'(5)=2 I can't understand how to figure out this problem because I am unable to find a derivative for the function. How

    asked on July 2, 2016
  34. Physics- Help!!

    A step-up transformer is used on a 100 V line to increase the potential difference to 1200 V. If the primary has 120 turns, then what is the number of turns in the secondary coil? 1440 turns 1000 turns 100 turns 10 turns Thanks!!!!!

    asked on June 9, 2016
  35. math

    if veronica took a test and she got 80% on it and she answered them correctly then how many questions were there?

    asked on June 1, 2016
  36. Physics

    A 67.6 ohms resistor is connected in parallel with a 103.8 ohms resistor. This parallel group is connected in series with a 20.8 ohms resistor. The total combination is connected across a 18.2-V battery. Find a) the current and b) the power dissipated in

    asked on May 18, 2016
  37. Math

    The width of a rectangle is 3 units less than the length. If the area is 70 square units, then find the dimensions of the rectangle.

    asked on May 3, 2016
  38. Physics

    An ocean liner leaves New York City and travels 25.1 degrees north of east for 110km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ships displacement vector in the directions, a) due east and

    asked on April 19, 2016
  39. Math- HELP!

    Build a table to estimate lim sin(1/x) as x approaches zero. Use multiples of pi. I built a table, but do not understand why this limit does not exist. Please explain! Thank you!!

    asked on February 20, 2016
  40. Math- HELP!

    Graph f(x)= { 4 if (0

    asked on February 16, 2016
  41. math- HELP!

    The Fibonacci sequence was first discovered during a study of rabbits. If newborn rabbits become adults in one month, each pair of adult rabbits produces one pair each month, and no rabbits die, then how many pairs of rabbits would be produced after seven

    asked on January 30, 2016
  42. Chemistry

    In the complete combustion of C3H8 (propane), how many liters of CO2 are produced from 10 liters of O2?

    asked on January 25, 2016
  43. Physics- HELP PLEASE!

    Four charges are placed at the four corners of a square of side 15 cm. The charges on the upper left and right corners are +3 µC and -6 µC respectively. The charges on the lower left and right corners are -2.4 µC and -9 µC respectively. The net

    asked on January 24, 2016
  44. Maths

    Three lights all go on one changes every 5 sec one every 6 sec one every 8 sec when will they all go on together

    asked on January 12, 2016
  45. Maths

    What is the least common multipulls 5 6 8

    asked on January 11, 2016
  46. Maths

    Three lights go on together first changes every 5 sec second every 6sec third every 8 sec when is the next time they go on together

    asked on January 11, 2016
  47. Precalculus- HELP!

    Which of the following series diverges? a) 5 + 10 + 15 + 20 +... b) 45 + 15 + 5 + 5/3 + ... c) 3/4 + 3/16 + 3/64 +.. d) 1/2 + 1/4 + 1/8 + 1/16 +... Thank you!

    asked on January 10, 2016
  48. Physics

    What is the heat required in kilocalories to convert 2 kg of ice at 0°C completely into steam at 100°C? -80 Calories -1440 Calories -4186 Calories -540 Calories Thanks!

    asked on January 8, 2016
  49. math- HELP!

    The value of a particular investment follows a pattern of exponential growth. You invested money in a money market account. The value of your investment t years after your initial investment is given by the exponential growth model A=2600e^0.08t How much

    asked on January 2, 2016
  50. math- HELP!

    Calculate the linear speed of a bicycle with 26-inch wheels being pedaled at a rate of 200 revolutions per minute. Express your answer in inches per minute rounded to the nearest whole number. (Hint: The diameter of the wheel is 26 inches.) I got: linear

    asked on January 1, 2016
  51. Trigonometry- ??????

    (The number of times a bicycle tire rotates in a given time period is directly related to the distance traveled in that time period. Consider the following scenarios.) 1. Calculate the angular speed of a bike with 26-inch tires rotating at 200 revolutions

    asked on January 1, 2016
  52. Precalculus- HELP!

    The temperature in your house is controlled by a thermostat. The temperatures will vary according to the sinusoidal function: f(x)=7sin(π/12(x-11))+33 where f(x) represents the temperature in degrees Celsius (°C) and x is hours since midnight. What is

    asked on December 30, 2015
  53. Physics

    The intensity of sound is x W/m2 at a distance of 5 m from the source. What is the intensity of the sound at a distance of 20 m from the source? I am not sure how to do this problem. Thank you for your help!

    asked on December 26, 2015
  54. Trigonometry- ??????

    Solve the equation for 0≤ x ≤ 180 given tan(x) sin^2(x)=2tan(x) How do I do this? Thank you and Merry Christmas! :)

    asked on December 24, 2015
  55. Trigonometry- Help!

    After one hour in flight, an airplane is located 200 miles north and 300 miles west of the airport. What is the magnitude of the plane's velocity? Round your answer to the nearest mile per hour. a) 22 miles per hour b) 128 miles per hour c )256 miles per

    asked on December 17, 2015
  56. Pre Calculus HELP!?

    The length of a day in Philadelphia, Pennsylvania, is given by the sinusoidal function, f(t), which represents the number of hours of daylight t days into the year: f(t)= 10+2.8sin(2pi/365)*(t-1.35). How many hours of daylight are there on the 100th day of

    asked on November 26, 2015
  57. Pre-Calculus HELP!!

    The length of a day in Philadelphia, Pennsylvania, is given by the sinusoidal function, f(t), which represents the number of hours of daylight t days into the year: f(x)=11+2.2sin(2pi/365)t-1.25).How many hours of daylight are there on the twelfth day of

    asked on November 26, 2015
  58. Pre-Calculus HELP!

    Explain how the transformations of the functions f(x)=15sin(x) and f(x)=sin(x)+15 differ. I see that f(x)=sin(x)+15 experiences a vertical shift, but I am not sure about the transformation that f(x)=15sin(x) experiences. Thank you for your help!

    asked on November 25, 2015
  59. World History

    1.) INDUSTRIAL REVOLUTION: Why is there such a massive gap in the world today between rich and poor nations? 2.) IMPERIALISM: How does imperialism continue to affect the world we live in? 3.) WORLD WAR I: How did World War I and new scientific advances

    asked on November 20, 2015
  60. Precalculus

    1.) Use sigma notation to describe the sum of the first ten terms of the arithmetic sequence. 20+18.5+17+15.5+14+12.5+11+9.5+8+6.5 2.)Use sigma notation to describe the sum of the first ten terms of the geometric sequence.

    asked on November 14, 2015
  61. Language Arts

    From an hour with Abuelo: which paragraphs represent the exposition in Abuelo's story? paragraphs 8–10 paragraphs 10–12 paragraphs 12–14 paragraphs 14–15 *** (i chose number 4)14-15

    asked on November 13, 2015
  62. Precalculus

    I have two questions: 1. You want to make an investment in a continuously compounding account earning 18% interest. How many years will it take for your investment to double in value? Round the logarithm value to the nearest thousandth. Round the answer to

    asked on November 1, 2015
  63. Precalculus

    You want to make an investment in a continuously compounding account over a period of two years. What interest rate is required for your investment to double in that time period? Round the logarithm value and the answer to the nearest tenth.

    asked on November 1, 2015
  64. Health class

    ---- are nutrients that are needed for growth and repair of the body's tissues. Carbohydrates Fats Fibers Proteins

    asked on October 9, 2015
  65. Heath class

    Which of the following foods is usually highest in protein? Apple Chicken Bread Candy bar

    asked on October 9, 2015
  66. physics

    I need help understanding these, please. Thanks! 1. A 2 kg body moves with constant velocity when a force of 10 N is applied. What is the coefficient of kinetic friction between the table and the body? (Would I use F=m*g for this??) 2. Which of the

    asked on October 4, 2015
  67. Algebra 1

    The manager of a band recommends that the band sell its CDs for $8.75. The band decides to sell the CD for p dollars. A) Write an absolute value expression that tells how far the bands price is from the recommended price. B) The band wants the price of its

    asked on October 4, 2015
  68. Health, Safety, and Nutrition

    Which if the following is a mandatory standard? (1 point) 1) Food Labels 2) National Health and Safety Standard 3) dietary reference 4) Childmand adult care food program *Havng a hard time finding it in the book

    asked on September 30, 2015
  69. Calculus

    The Norman window illustrated below has a semicircular section on top of a rectangle. The radius of the semicircle is x. The long side of the rectangle is three times the radius of the semicircle. a)Express the total area of the window, A, as a function of

    asked on September 25, 2015
  70. P6 maths

    Mrs Raja and Mrs lee have some eggs to sell. If mrs raja sells 30 eggs per day and mrs lee sells 15 eggs per day , mrs lee will still have 610 eggs left when mrs raja has sold all her eggs . If mrs lee sells 30 eggs per day and mrs raja sells 10 eggs per

    asked on September 19, 2015
  71. Pre-calculus- URGENT

    Convert the rectangular coordinate (-8,i (square root of 3) into polar coordinates. How do I do this?? I tried every way I knew of to convert the y coordinate (i (square root of three)) to polar form, but it didn't work. I think that the polar form of the

    asked on September 13, 2015
  72. Pre-calculus

    write the complex number -5 in polar form. I don't get how to do this because arctan of b/a would be 5/0 which is a fraction with no solution. Also, is a zero? Sorry if I'm being confusing! Thank you!

    asked on September 12, 2015
  73. AP English

    Analyze the validity of the following argument: Sally argues, "Mom, your rules are way too strict! Melissa's mother lets her stay out until 2:00 AM on weekends. Peter's parents let him go to all-night raves even on school nights. Tom's parents don't even

    asked on September 10, 2015
  74. Precalculus

    #1.) Write (1-i)^10 in a+bi form. #2.) Write (1+i)^20 in a+bi form. How do I do these? Thanks!

    asked on September 7, 2015
  75. Pre-Calculus HELP!

    change the polar equation r=5/1+cos(theta) to rectangular form. How do I do this? Thank you! :)

    asked on September 6, 2015
  76. Physics-PLEASE HELP

    A man walks for 5 km/hr for 1 km and 7 km/hr for next 1 km. What is his average speed for the walk of 2 km? -5.8 km/hr -6.0 km/hr -2.0 km/hr -1.0 km/hr Thank you very much!!

    asked on August 20, 2015
  77. french

    Three ways Cyrano in the play Cyrano de Bergerac show his panache?

    asked on July 21, 2015
  78. Math Calc

    A factory produces bicycles at a rate of 100+0.4t2−0.7t bicycles per week (t in weeks). How many bicycles were produced from day 15 to 28? Hint: the lower limit of integration should be the integer number of weeks preceding day 15, i.e. a=2, and the

    asked on April 28, 2015
  79. writing skills

    2.   Because information listed on a website can change from day to day, _______ must be included in the end citation on the Works Cited page.A. the title of the siteB. the publication dateC. the date of accessD. the URLStudent Answer: B    

    asked on April 1, 2015
  80. Astronomy

    Imagine that the asteroid A that has an escape velocity of 50m/s. If asteroid B has twice the mass and twice the radius it would have an escape velocity _______ the escape velocity of asteroid A

    asked on March 26, 2015
  81. Chemistry

    If 22 mol of benzene are completely reacted with molecular oxygen, how many moles of carbon dioxide will be produced?

    asked on February 10, 2015
  82. college chemistry

    calculate the average kinetic energies of CH4 and N2 molecules at 273k and 546k

    asked on January 20, 2015
  83. Math

    Points P and Q are tries toom points on segment AB. If AQ =7x+6 and PQ= 3x+5, find all possible values for the length of AB. So far I've established that 4x+1 is the length of AP and QB So the total length of AB should be 11x+7 I think, I'm not sure how to

    asked on January 8, 2015

    A 4.43 gram sample of phosphorus was burned in air to produce 10.15 g of an oxide. What's the empirical formula of this compound?

    asked on January 6, 2015
  85. chemistry-URGENT

    how many moles of atoms are contained in 7.654 x 10^32 atoms of Ga ? Thank you!

    asked on December 2, 2014
  86. Chemistry

    How many moles of atoms are contained in 5.60 grams of Sulfur? Can someone help me understand how to work out other problems like these as well? Thank you!!

    asked on December 2, 2014
  87. Math

    Larry and Gary are discussing whose garden has the most area to plant flowers. Larry claims that all they have to do is walk around the two gardens to get the perimeter and the one with the greatest perimeter has the greatest area. How would you help these

    asked on October 14, 2014
  88. 3 grade math

    How can I find the area of an angle?" How do you respond?

    asked on October 14, 2014
  89. physics

    Jordan throws a golfball straight up from the top of a building 50 meters high. The initial speed of the golfball is 20 m/s and it just misses the edge of the roof when it eventually falls. Neglecting air resistance, find the velocity of the golfball just

    asked on October 12, 2014
  90. Chemistry URGENT!!

    Which anions have the largest and smallest radii? Thank you!!

    asked on October 10, 2014
  91. Chemistry

    Which positive ion (cation) has the smallest radius? Please help! Thanks!

    asked on October 10, 2014
  92. Math

    For how many values of n where n is a positive integer less than 10 is n+1/2 an integer? A) None B) One C) Three D) Four E) Five Please I would like some help explaining how to get the answer :)

    asked on September 24, 2014

    Hi! I know I asked this before, but I still don't understand how to solve the problem:"Since a hydrogen atom consists of one proton and one electron, it should have a mass of 1.763 x 10^-24 grams. Using unit factoring, calculate how may hydrogen atoms

    asked on September 18, 2014
  94. Chemistry

    Since a hydrogen atom consists of one proton and one electron, it should have a mass of 1.763 x 10^-24 grams. Using unit factoring, calculate how may hydrogen atoms you'd have if you had 5.6 g of hydrogen. Thank you!

    asked on September 18, 2014
  95. Chemistry

    A metal bar having a mass of 212 g is heated to 125.0°C and then dropped into 375 g of water at 24°C. After a while the temperature of the water and the metal is 34.2°C. If the specific heat of the metal is 0.831 J/g°C, how much heat did the metal

    asked on September 13, 2014
  96. Grammar: PLEASE HELP

    What's the difference among a simple sentence, complex, compound, and compound-complex. I always have a difficult time knowing which is which, except simple sentence of course, that one is easy

    asked on May 7, 2014
  97. chemistry

    Can CoBr2+ NH4Br + NH4OH ---> Co^2+ (aq) + 2NH3 (l) + H^+ (aq) + H2O (l) + 3Br^- form the complex [Co(NH3)5Br]Br2 if so please explain

    asked on May 4, 2014

    The first two terms in the expansion of (1+ax/2)^10 + (1+bx)^10 in ascending powers of x., are 2 and 90x^2 Given that a is less than b find the values of the constants a and b . (11 marks) Thanks :)

    asked on March 20, 2014
  99. English

    Hello, what is a common theme between the Shakespeare's Romeo and Juliet, To Kill a Mockingbird, and Roahl Dahl's Lamb to the Slaughter? Please give examples of the the theme found within in the 3 books. It's just that I have to write a formal literary

    asked on December 10, 2013
  100. chemistry

    Complete the following fission reaction 1n0 + 235U92 → 131Sn50 + ? + 2 1n0 + energy

    asked on December 6, 2013


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