Jacky

Most popular questions and responses by Jacky
  1. Science

    Which of the following is not an atom found in household bleach (Na0CL)? 1) Sodium (Na) 2) Chlorine (Cl) 3) Hydrogen (H) 4) Oxygen (O) My answer it's 4 correct me

    asked on January 22, 2016
  2. Language Arts Checking answer

    Identify the independent clause in the following sentence. Before electric lighting was invented, people used candles to light their homes at night. a. Before electric lighting was invented b. people used c. people used candles to light their homes at

    asked on January 21, 2016
  3. algebra 1

    Which of the following points are solutions to the system of inequalities shown below? Check all that apply. y>4x + 2 y

    asked on January 5, 2015
  4. chemistry

    A scuba diver takes a 2.3 L balloon from the surface, where the pressure is 0.90 atm and the temperature is 28 ∘C, to a depth of 20 m , where the pressure is 3.0 atm and the temperature is 15 ∘C. What is the volume of the balloon at this depth?

    asked on April 17, 2019
  5. physics

    The Earth’s radius is about 6380 km. The space shuttle is orbiting about 275.0 km above Earth’s surface. If the average speed of the space shuttle is 23500 km/h, find the time required for it to circle Earth.

    asked on November 11, 2012
  6. geometry honors

    Can you prove ABCD is a parallelogram based on the given information? Explain. Given: x = 5, y = 4 Prove: ABCD is a parallelogram. The image consists of a quadrilatera ABCD with their sides AB, BC, CD, DA as 3x + 12, 7y - 8, 6x - 3 and 5y respectively.

    asked on January 8, 2015
  7. STAT

    Suppose adults in a particular town drive a mean of 65 mph with a standard deviation of 15 mph. Using the normal curve table, a.What percentage of adults drive below 35 mph? b.What percentage of adults drive below 68 mph or above 85 mph? c.What percentage

    asked on October 29, 2013
  8. STAT

    The weights of the 100 students in an introductory statistics class are normally distributed, with a mean of 170 pounds and a standard deviation of 5 pounds. 1)How many students would you expect to have weight between 162 pounds and 178 pounds? 2)What is

    asked on October 12, 2013
  9. Science

    Which of the following is pure substance? Chocolates milk Orange juice Seawater Hydrogen peroxide I'm not sure what's the right answer!!

    asked on January 22, 2016
  10. physics

    A cart starts from position 4 (which is 20m above ground) in the figure below with a velocity of 11 m/s to the left. Find the speed with which the cart reaches positions 1, 2, and 3. Neglect friction. speed at position 1 m/s? speed at position 2 m/s? speed

    asked on February 27, 2012
  11. math algebra

    Gray Glaze requires 15 hours to put a new roof on a house. His apprentice, Anna Gandy, can record the house by herself in 20 hours. After working alone on a roof for 6 hours, Gary leaves for another job. Anna takes over and completes the job. How long does

    asked on November 19, 2016
  12. chem

    What volumes of 0.53 M HNO2 and 0.46 M NaNO2 must be mixed to prepare 1.00 L of a solution buffered at pH = 3.55? HNO2

    asked on March 14, 2010
  13. Math (Assignment due today)

    Assume 11 males audition, one of them being Winston, 4 females audition, one of them being Jackie, and 5 children audition. The casting director has 3 male roles available, 1 female role available, and 2 child roles available. (1)How many different ways

    asked on June 28, 2016
  14. STAT

    Assume that women’s heights are normally distributed with a mean given by µ = 64.6 inches and standard deviation given by σ = 2.2 inches. What area under the normal curve corresponds to the probability that a woman’s height is between 63.7 inches and

    asked on October 12, 2013
  15. english

    In this discussion, you will post issues related to motivation and learning. Refer to the texts in this section, other texts you have read, and your personal experience and knowledge to support your ideas. Begin your discussion by addressing the following

    asked on January 29, 2015
  16. !!MATH!!

    A decroative floor pattern has one red square tile surrounded by 12 blue tiles. Write and evaluate an expression to show how many total tiles (red and blue) are needed if there are 15 red tiles. Then make a table showing the total number of tiles if there

    asked on September 30, 2011
  17. STAT

    The weights of the 100 students in an introductory statistics class are normally distributed, with a mean of 170 pounds and a standard deviation of 5 pounds. How many students would you expect to have weight between 162 pounds and 178 pounds? What is the

    asked on October 12, 2013
  18. Science

    Explain why pentane has a significantly higher vapor pressure than 1-butanol?

    asked on January 30, 2014
  19. Math, calculus III

    A particle moves along the path from the origin to (0, 2, 1) to (1, 2, 1) to (1, 0, 0) and back to the origin under the influence of the force field F = z2i + 2xyj+ 4y2k. Calculate the work done by direct calculation and by using Stokes’ Theorem

    asked on September 18, 2017
  20. chemistry

    how many moles of acid must be added to the blood to bring the carbonic acid/hydrogen carbonate ratio from 1:2 to 1:10?

    asked on April 19, 2010
  21. Chemistry

    Need Help On This Question.! Potassium chloride reacts with bromine forming potassium bromide plus chlorine. If 500g of potassium bromide are produced, how many grams of potassium chloride reacted?

    asked on December 4, 2010
  22. Physics

    A bicyclist is riding at a tangential speed of 13.9 m/s around a circular track with a radius of 38.4 m. If the magnitude of the force that maintains the bike’s circular motion is 378 N, what is the combined mass of the bicycle and rider? Answer in units

    asked on January 29, 2013
  23. STAT

    The weights of the 100 students in an introductory statistics class are normally distributed, with a mean of 170 pounds and a standard deviation of 5 pounds. How many students would you expect to have weight between 162 pounds and 178 pounds?

    asked on October 12, 2013
  24. physics

    A roller coaster has a loop the loop with a loop radius of 14.5 m. What is the minimum speed that the cart must have so that unconstrained riders do not fall out when the cart is upside down at the top of the loop? What condition on the riders is met at

    asked on November 9, 2011
  25. math help & correction

    Problem #1 Is this correct or wrong? Find the slope of the line passing through the points(-1, -1)and(-1, 2). Write the equation of the line. For this one I KEEP GETTING Y= - (3)/(2)x-2.5 Problem #2 Find the y-intecept and slope of 7x+9y=72 My answer:

    asked on March 31, 2007
  26. Physics

    Find the magnitude of the gravitational force a 65.4 kg person would experience while standing on the surface of Earth with a mass of 5.98 × 1024 kg and a radius of 6.37 × 106 m. The universal gravitational constant is 6.673 × 10−11 N · m2/kg2.

    asked on January 29, 2013
  27. PHYSICSS!!!!!

    At t = 0, a particle moving in the xy plane with constant acceleration has a velocity of vi = (3.00 i - 2.00 j) m/s and is at the origin. At t = 2.00 s, the particle's velocity is v = (6.60 i + 4.00 j) m/s. Find the acceleration of the particle at any time

    asked on November 4, 2008
  28. Science

    Predict change in temperature for 1-butanol, CHSCH2CH2CH2OH, if same experiment were using 1-butanol?

    asked on January 30, 2014
  29. STAT

    Given a sample size of 18, with sample mean 660.3 and sample standard deviation 95.9, we are to perform the following hypothesis testing: Null Hypothesis H0 : µ = 700 Research Hypothesis H1 : µ ≠ 700 •What is the test statistics? •At a 0.05

    asked on October 13, 2013
  30. senn high school

    Write a 1-2 paragraph on a topic of your choice using at least 3 of the figurative language we have reviewed so far.After your paragraph ,list the types of figurative language you used ?

    asked on July 4, 2012
  31. senn high school

    Please wite a paragraph (5sentences)to show you comprehend what analogies and idioms are.Use at least one analogy and one idiom in the paragraph?

    asked on June 29, 2012
  32. math

    the serface of our earth is 20'c for every km, k below the surface the tempature increses by 10'c. let t represent the tempature in 'c 1a write an equation that represent the relationship between disatnce k and t tempature 1b. what is the slope and and

    asked on October 17, 2009
  33. chemistry

    Why can't lead chloride be directly prepared by adding hydrochloric acid?

    asked on July 15, 2015
  34. STAT

    A researcher is examining the relationship between color preference and gender. A sample of 30 men and 30 women is obtained and each person is asked to identify his/her preference between two choices of paint colors for a new student lunge. For this

    asked on October 12, 2013
  35. economic

    explain the importance of the following terms in the u.s. free enterprise systerm;(A) profit motive, (B) voluntary extange, (C) private property rights, and (D) compition

    asked on September 24, 2012
  36. chemistry

    You have a sample of magnesium chloride. If there are 3.90 mol of Cl, how many moles of magnesium atoms are there?

    asked on February 28, 2010
  37. unscrambling a French word associated with art

    unscramble tertcueas (it's in french and the beginning is les...) This might work: http://www.ssynth.co.uk/~gay/anagram.html Be sure to click the circle by "French," and be sure to uncheck the box before "Include single-character words (a and I)" -- !! =)

    asked on February 8, 2007
  38. Math, calculus III

    A fluid has constant density ρ and velocity v = zi + (y2 + 2y)j − 2xk. (a) Calculate the particle paths (field-lines). (b) Calculate the mass flux through the boundary of the region x2 + y2 ≤ 4 and 0 ≤ z ≤ (4−y) by direct calculation and by

    asked on September 18, 2017
  39. math

    We did not find results for: a conical tank with its vertex down is 12 feet high and 12 feet in diameter at the top. water is being pumped in at the rate of 8 feet cubed per minute. find the rate at which the water level is rising when the water is 4 feet

    asked on November 12, 2014
  40. Physics

    The mass of a certain neutron star is 1 × 1031 kg (5 solar masses) and its radius is 5500 m. What is the acceleration of gravity at the surface of this condensed, burned-out star? The value of the universal gravitational con- stant is 6.67 × 10−11 N ·

    asked on January 29, 2013
  41. phsyics

    A brick of mass 1.5 kg slides down an icy roof inclined at 30.0° with respect to the horizontal. (a) If the brick starts from rest, how fast is it moving when it reaches the edge of the roof 1.75 m away? Ignore friction. m/s ? (b) Redo part (a) if the

    asked on February 27, 2012
  42. 9th grade (math)

    im learnin about y=mx+b 1.describe the line you think each equation represent Y=x, y=5, x=-3 2. The equation of a line is y=mx+2. determione the value of m when the line passes through each point D(12.5) s(1.-3) e(-2.6) a(-5.1)

    asked on October 17, 2009
  43. engineering

    In a Direct Shear Test please help. 1)How do we determine the spacing between the two parts of shear box? What would happen if it is not set properly? 2) The shear and normal stress can be calculated with the corrected area considering the movement of

    asked on December 1, 2013
  44. 9th grade (math)

    pennies are kept in a jar the mass of the jar is 20 g the mass of each panny is 5g le t the varible p represent the total mass of pennis and the jar. let the variable n represent the number og pennys. 1a. write an equation that represent the relation ship

    asked on October 17, 2009
  45. 9th grade (math)

    the surface of our earth is 20'c for every km, k below the surface the tempature increses by 10'c. let t represent the tempature in 'c 1a write an equation that represent the relationship between disatnce k and t tempature 1b. what is the slope and and

    asked on October 17, 2009
  46. math,algebra

    can someone help me i've tried different numbers but i can come out to factor this: 2b^2+6b-216=0 why don't you divide the equation by 2 to get b^2+3b-108=0 now by trial and error, can you find two factors of 108 that have a difference of 3? (b-9)(2b+24)

    asked on March 26, 2007
  47. math,help

    Can someone help me understand the following in terms that i can understand because i've read the book,definitions i've done research and i am new with this and i still don't understand.The teacher is hopeless at explaining that's why i am here for help.

    asked on March 21, 2007
  48. STAT

    The score on a test are normally distributed with a mean of 75 and a standard deviation of 6. If the professor wishes to give A’s to the top 4%, what would be the cutoff score be for A’s?

    asked on October 12, 2013
  49. STAT

    Given a sample size of 18, with sample mean 660.3 and sample standard deviation 95.9, we are to perform the following hypothesis testing: Null Hypothesis H0 : µ = 700 Research Hypothesis H1 : µ ≠ 700 •What is the test statistics? •At a 0.05

    asked on October 12, 2013
  50. Physics

    A ball is thrown vertically upward with a speed of 26.1 m/s from a height of 2.1 m.How long does it take to reach its highest point? The acceleration of gravity is 9.81 m/s2. Answer in units of s

    asked on November 11, 2012
  51. Physics

    Sally travels by car from one city to another. She drives for 36.5 min at 90.7 km/h, 13.3 min at 120 km/h, and 57.4 min at 45.6 km/h, and she spends 16.3 min eating lunch and buying gas. Find the total distance traveled. Answer in units of km

    asked on November 11, 2012
  52. finance

    indexing exemption for inflation. each year, the internal revenue service adjusts the value of an exemption based on inflation ( and rounded to the nearest $50.00). in a recent year, if the exemption was worth 3,100 and inflation was 4.7 percent, what

    asked on May 1, 2012
  53. government

    Which statement about the senate is true?

    asked on March 31, 2010
  54. business

    Mr. S, a dealer of musical instruments, persuades me to buy an electronic organ, orally promissing that I can return the organ if I cannot learn how to play it. I signs a standard written form contract, which does not include this provision. I will not be

    asked on April 18, 2008
  55. Electrons circuits

    Hi everyone! I'm new in here. Recently I bought a movement monitor which detects micro movement. If the sensor does not detect a movement in 20 seconds, the build-in speaker will beep until the sensor detects a movement. I'm using it for my project and I

    asked on April 4, 2008
  56. Social groups

    How do virtual groups differ from in -person primary and secondary groups? What qualities do virtual and in-person groups share? I understand people join primary groups to satisfy their personal needs of belonging and fulfillment. Could the differences

    asked on September 20, 2016
  57. Science

    Does ΔT from evaportation increase or decrease with increasing molecular mass? Explain why?

    asked on January 30, 2014
  58. Science

    Using concept of Surface Tension, explain why does the detergent cause the effect observed?

    asked on January 30, 2014
  59. STAT

    The Cox family has 4 boys. •What is the probability of a 4-child family having 4 boys? •What is the probability that the next child of the Cox family will be a boy, given that they have already 4 boys in a row?

    asked on October 12, 2013
  60. STAT

    A certain personality index postulated by Professor Bailey is normally distributed, with a mean of 0.4 and a variance of 0.0004. What is the probability that the Professor Bailey’s personality index of a randomly selected person will exceed 0.44?

    asked on October 12, 2013
  61. STAT

    Lucinda used ANOVA to test if there were statistically significant differences between the five conditions of her independent variable. There were 8 participants in each condition. Her obtained F-test (df between = 4, df within = 30) was F = 10.897/3.72 =

    asked on October 12, 2013
  62. math

    standard form numbers are used around the world for....... 1:speed of light i need 3 more situations when you use standard form

    asked on January 19, 2012
  63. algebra

    the perimeter P of a square is four times the length of ones side s, or P=4s. Is (1455) a solution of this equation? If not, find a solution that uses one of the given values

    asked on November 1, 2011
  64. math

    6x (squared) = 23x+18 help please

    asked on May 18, 2010
  65. high school math

    what is (1+2y)(3+5y)

    asked on October 31, 2009
  66. math, basic

    how do you write 5 and a half in a fraction not like this because i thought it was 5 1/2 but it was wrong. 5 1/2 is also 11/2, which is considered an improper fraction. I hope this is what you were asking.

    asked on April 9, 2007
  67. math,help

    I definately do not understand this problem. If y varies directly with x, and y = 600 when x = 1000, find the constant of variation K. If y is directonally (proportional) to x, then for every value of x there is a value for y multiplied by a constant

    asked on March 31, 2007
  68. math,help

    What is the equation i have to use for the following question A roof rises 9.75 ft over a horizontal distance of 15.84ft. What is the slope of the roof to the nearest hundredth? Slope is given by slope=rise/run So what is the rise and what is the run?

    asked on March 31, 2007
  69. Unscrambling

    reatstuec in French (begins with les) Thank you for using the Jiskha Homework Help Forum. Sorry but it's too late this evening for me to even think. Usually an exercise like this would use the vocabulary you have been studying. Without knowing your

    asked on February 8, 2007
  70. lauguage arts

    what do rats do I need help fast. It looks as if what you need to do is learn how to conduct thorough and effective searches for yourself. That's what research is, and I'm sure that's what your teacher expects you to do -- conduct research.

    asked on September 14, 2006
  1. physics

    I think it's not a true answer😣😣

    posted on July 4, 2019
  2. more physics

    IF AN OBJECTS IS OBSEVED TO ACCELERATE

    posted on May 2, 2018
  3. 3rd grade math

    How to do a standard form?

    posted on September 11, 2017
  4. physics

    oitt buat itaaleem kerrrr???

    posted on February 20, 2017
  5. Ap Chemistry

    E = hc/λ where h = 6.626 E -34 Js +2.914*10^(-18) J = [6.626*10^(-34) Js (3*10^8) m/s] / λ so do some mathematical manipulation and isolate λ to get: λ = [6.626*10^(-34) Js (3*10^8) m/s] / +2.914*10^(-18) J & you can use a calculator to get the final

    posted on January 19, 2017
  6. life orientation

    identify 3 human rights violations

    posted on April 20, 2016
  7. chemistry

    Why can't lead chloride be directly prepared by adding hydrochloric acid to lead(ous) oxide?

    posted on July 15, 2015
  8. english

    Ms. Sue

    posted on January 29, 2015
  9. english

    im stuck with what to write, please help me! thanks

    posted on January 29, 2015
  10. world history

    was antonio da sangallo poor or wealthy

    posted on October 14, 2014
  11. Problem solving

    l pay 900.00 rent for 31 days, l moved in on 13 of august and moving out on 4;th september. how much would l get for 9 days from my landlord. thanks jacky.

    posted on August 18, 2014
  12. STAT

    Thanks, Jacky

    posted on October 20, 2013
  13. STAT

    Thanks that help a lot. Jacky

    posted on October 20, 2013
  14. STAT

    Thanks Reiny. That really help.

    posted on October 13, 2013
  15. Life orientation

    Department of environmental affairs

    posted on May 7, 2012
  16. physics

    Thank you so much! :)

    posted on February 28, 2012
  17. math

    OMG I STILL DON'T UNDERSTAND THT! i have to know how to do it

    posted on September 30, 2011
  18. Pre Calc

    Solve for x: |4x+6|-|2x-1|

    posted on September 1, 2010
  19. Calculus (Answer Check)

    P1=(-3,2);P2=(-6,-2)

    posted on July 21, 2010
  20. Electrons circuits

    I am sorry for my unclear explanation. Actually the monitor is powered by a 9V 100mA adaptor. I am not sure if the voltage drop across the speaker is AC or DC because the voltage keep changing from 0.9V to 1.5V on my voltmeter. Current is around 3.8mA. The

    posted on April 5, 2008