Liv

Most popular questions and responses by Liv
  1. Nature Science

    If a typhoon hits an island without any person, is that a disaster?

    asked on December 6, 2016
  2. Trigonometry

    Evaluate arctan(cot10Pi/9) sec(arccos(-1/6) csc(arcsec(5/3) sin(2 arccos(sqrt5/5)

    asked on November 27, 2016
  3. Math

    You want to conduct a survey to find out what sport the students at your school prefer to play. a) You interview 20 boys playing football at lunch. Is this a random sample? explain b) The survey question you ask is, ''What is your favorite sport to play?''

    asked on April 29, 2014
  4. Math

    The formula for finding the perimeter of an equilateral triangle is P = 3s. How can you transform the formula so that it can be used to determine the length of one side of the triangle when given the perimeter?

    asked on March 15, 2016
  5. math

    identify the choice that best completes the statement or answers the question. For questions 1-3, what is the solution of the systems? Use subsitution. 1. y = x + 6 y = 2x

    asked on May 7, 2018
  6. General chemistry

    1) How high above the inner blue cone of the burner flame should the crucible be when the Mg is heated? 2) What should you do if you see white smoke rising from the crucible in the early stages of heating the Mg? 3) How will you know when the reaction

    asked on February 12, 2018
  7. General chemistry

    Ammonia fumes can permanently fog soft contact lenses. Briefly explain why students wearing soft contact lenses should be particularly careful when doing this experiment.

    asked on February 12, 2018
  8. Organic Chem question

    What would be the product when 3-bromoprop-1-ene and cyclohexane-1,3-dione react with excess NaOH?

    asked on April 19, 2017
  9. chemistry

    What is the condensed formula for 6-chloro-2-methyl-3-heptyne?

    asked on November 8, 2017
  10. physics

    a car starts from rest and accelerates uniformly to reach a speed of 21 m/s in 7.0s. What was the speed of the object after 2.0 seconds?

    asked on October 11, 2016
  11. Pre-calculus

    prove the identity sin2x-sin2y/sin2x+sin2y=tan(x-y)/tan(x+y)

    asked on November 19, 2016
  12. Math

    Insert grouping symbols to make the following sentence true: 160 = 8 * 16 + 12 - 4 / 2

    asked on September 15, 2015
  13. Calculus

    Suppose that the price p, in thousand pesos, and the number of sales x(in hundreds) of a certain item can be modeled by the equation 5p+4x+px=100. Suppose also that the price is increasing at the rate of $200 per year. How fast is the quantity changing at

    asked on March 1, 2017
  14. Trigonometry

    Show that the following are not trigonometric identities 1.tan 2x = 2tan x 2. sec x= sqr rt 1+tan^2 x 3. sin(x+y)=sin x +sin y

    asked on October 1, 2016
  15. math with application

    If 12 % of a radioactive substance decays in 7 hours, what is the half-life of the substance? Carry out all calculations exactly, then round the final answer to three decimal places. The half life is what hours?

    asked on October 16, 2015
  16. Counseling

    Hansen's 6 tasks are all focused on a holistic view of career development.

    asked on June 9, 2019
  17. General Chemistry

    The formula of a compound of lead (Pb) and sulfur (S) was determined using the method in this module. A sample of Pb was weighed into a crucible and covered with finely powdered S. The crucible was covered and heated to allow the Pb and S to react.

    asked on February 12, 2018
  18. Trigonometry

    Evaluate please: a.) arcsin(sin 13pi/16) b.) arccos(cos[-pi/18]) c.) arcsin(sin pi/18 d.) arcsec(-√2) e.) arctan(-√3/3)

    asked on November 26, 2016
  19. Derivative-Optimization Problems

    You plan to enclosed part of a rectangular farmland with a fence. Since one side of it is bounded by a river, you only need to fence the other three sides. if you have enough budget to buy 600m of fencing material, what is the largest area you can enclose?

    asked on February 22, 2017
  20. physics

    A triangular plate with a non-uniform areal density has a mass M=0.700 kg. It is suspended by a pivot at P and can oscillate as indicated below. Its center of mass is a distance d=0.200 m from the pivot axis and its moment of inertia about an axis through

    asked on December 4, 2011
  21. Calculus Reposted

    A point is moving along the curve xy=12. When the point is at (4,3), the x-coordinate decreases at the rate of 2cm/sec. How fast is the y-coordinate changing at that point? dy/dx=-y/x is my change rate so far, should i substitute the coordinates (x,y) to

    asked on March 1, 2017
  22. Calculus

    A point is moving along the curve xy=12. When the point is at (4,3), the x-coordinate decreases at the rate of 2cm/sec. How fast is the y-coordinate changing at that point?

    asked on February 25, 2017
  23. Pre-calculus

    Prove the following identities. 1. 1+cosx/1-cosx = secx + 1/secx -1 2. (tanx + cotx)^2=sec^2x csc^2x 3. cos(x+y) cos(x-y)= cos^2x - sin^2y

    asked on November 18, 2016
  24. Geometry

    A rectangular quilt's length is twice the length of a rectangular picture, and the quilt's width is three times the width of the same picture. The area of the picture is 2 square feet. What is the area of the quilt, in square feet?

    asked on March 26, 2015
  25. Pre-calculus

    prove sin(x+y)+sin(x-y)/cos(x+y)+cos(x-y)=tanx

    asked on November 19, 2016
  26. Pre-calculus

    Evaluate sin 7pi/12. Using sum, difference, and cofunction identities

    asked on October 15, 2016
  27. Algebra

    the phone company has two plans for cell phones. the first plan calls for a monthly fee of 35.00 with unlimited calling. The other plan is a monthly fee of 15.00, with a 0.50 fee for every minute over 100 used in a month. What is the greatest number of

    asked on August 27, 2012
  28. Physics

    A 20mm diameter rivet is used to fastened two 25mm thick plate If the shearing stress of rivet is 80MPa. What tensile force is applied to each plate to shear the rivet

    asked on March 27, 2019
  29. 2 problems---math

    1. find the relationship of x and y in the table. x: 2; 4; 6; 8; 10 y: 1.5; 2; 3; 4.5; 5 y = _______ x + ________ 2. find the relationship of x and y from a graph of a line that crosses the y-axis at y = 6 and that goes into the left 2 units and rises 3

    asked on April 12, 2018
  30. Pre-calculus

    Convert cartesian equation to polar form 1. x^2+y^2=4x 2. (x^2+y^2)^2=6(x^2-y^2)

    asked on December 4, 2016
  31. Pre-calculus

    Evaluate sin16° cos29° + cos16° sin29°

    asked on October 15, 2016
  32. Stats

    Sally rolls a fair number cube 8 times and gets a 5 twice. What is the experimental probability that on her next roll, she will roll a 5? I know that experimental probability is f/n, so the number of trials is now 9, but is the number of times Sally roll a

    asked on August 22, 2014
  33. Trigonometry

    A weight hanging from the end of a spring is pulled 8 inches below its rest position. When released, the weight then exhibits simple harmonic motion, with period 1/2 second. Find an equation describing its motion

    asked on October 1, 2016
  34. Trigonometry

    how do i evaluate this? 1+tan 200(degrees) tan 80(degrees)/tan200(degrees)-tan 80(degrees)

    asked on October 15, 2016
  35. Science

    Direction: Place a big mug, a plastic drinking glass and an empty glass bottle on the table with the big mug at the center, the drinking glass at the edge of the table, and the bottle anywhere on the table. With the force , shake the table and observe what

    asked on November 28, 2016
  36. Physics

    An Olympic long jumper is capable of jumping 8.44m. Assuming his horizontal speed is 5.644m/s as he leaves the ground, how high does he go?

    asked on October 30, 2016
  37. Geometry

    Point P lies in plane M. How many circles are there in plane M that have center P and a circumference of 6π inches? a) none b) one c) two d) four e) more than four

    asked on July 7, 2010
  38. MATH - PLEASE HELP!!

    The length of a rectangle is 3yd less than twice the width, and the area of the rectangle is 65ydsquare. Find the dimensions of the rectangle.

    asked on November 9, 2016
  39. Biochem

    1 ml of whole blood is collected and centrifuged to obtain a plasma sample. The volume of the plasma sample is 600 microlitres. A 1 in 4 dilution of the plasma is made and analysed using a cholesterol assay like the one you performed in the laboratory. 10

    asked on September 30, 2012
  40. General chemistry

    Briefly explain if wearing googles or other eye protection remove the hazard for these students.

    asked on February 12, 2018
  41. Trigonometry

    arctan(cot10Pi/9)

    asked on November 27, 2016
  42. MATH - HELP PLEASE

    The length of a rectangle is 3yd less than twice the width, and the area of the rectangle is 65ydsquare. Find the dimensions of the rectangle.

    asked on November 9, 2016
  43. Pre-calculus

    Find the acute angle between the lines 2x-3y-6=0 and x+5y-20=0

    asked on October 15, 2016
  44. calculus

    Let g(x)={x^2-x-2 if x is not equal to 1 {0 if x=1

    asked on January 29, 2017
  45. Pre-calculus

    Derive an identity that transforms sin(α+β+γ) into a sum of products of sines and/or cosines of the individual numbers α, β, γ.

    asked on October 15, 2016
  46. math

    6/?=18/?=?/12 (fractions)

    asked on April 2, 2012
  47. math

    What is 5 percent of 40

    asked on April 2, 2012
  48. math

    5,25,50,10 what are the next 3 numbers?

    asked on October 3, 2011
  49. mat?h

    What would the answer be to 4m+(-3n)+n? -3n squared +4m 4m+(-3n)+n = 4m + n(-3 +1) = 4m +(-2n) = 2(2m -n)

    asked on October 19, 2006
  50. Calculus Antiderivatives

    Find a function whose derivative is a constant k

    asked on March 4, 2017
  51. Math

    Kailey's recipe calls for 1 1/2 cups of oil to make one large batch of cookies. How much oil will she need for 1/4 batch?

    asked on February 7, 2017
  52. Calculus

    Can you please help me get the solution to this limit without using squeeze theorem and l'hopitals rule lim x to 0 of x^3 sin(1/x) lim x to 0 of x^2 sin^2(1/x)

    asked on January 11, 2017
  53. Do newspapers, magazines, television, radio, movie

    Im not sure what directing to go for this essay, i have changed it 3 times. can someone tell me if this would be correct? The answer is media doesn't decide what is important, The creators put out there what they think will catch peoples eyes, boring

    asked on January 12, 2015
  54. chemistry PLEASE HELP

    How many milligrams of sodium azide will produce 8.35 Liters of N2 at STP???

    asked on March 7, 2013
  55. Biochem

    1 ml of whole blood is collected and centrifuged to obtain a plasma sample. The volume of the plasma sample is 600 microlitres. A 1 in 4 dilution of the plasma is made and analysed using a cholesterol assay like the one you performed in the laboratory. 10

    asked on September 30, 2012
  56. math help needed

    what is 5 percent of 40

    asked on April 2, 2012
  57. Integral Calculus

    How to determine the order and degree of this differential equation, (y''')^2-2(y')^6=x-2

    asked on March 17, 2017
  58. Pre-calculus

    If sin2x=7/25, siny=-2/sq root of 13, cot y>0, and -pi/4

    asked on November 19, 2016
  59. *** MATH, PLEASE HELP!

    Solve 5x^-5/x^-4x+3. THANK YOU!

    asked on November 9, 2016
  60. Pre-calculus

    If sin x=-3/5 and sec x>0, find all the other circular function values of x

    asked on October 15, 2016
  61. Physics

    Determine the mass of a pasteboard with area 75.0cm

    asked on September 15, 2016
  62. Maths

    all the integer values of -4 < 2x -6 < 12

    asked on June 19, 2016
  63. Chemistry

    How many grams of KOH will be needed to boil a liter of cold water?

    asked on December 12, 2010
  1. pre algebra

    whats the answers to the whole quiz?

    posted on May 6, 2019
  2. Algebra 1

    1/(x-5)(x+7) =1/(x^2+2x-35)

    posted on March 27, 2019
  3. Health

    thanks that girl!

    posted on March 8, 2019
  4. Math

    Convert 566.2% into a decimal

    posted on March 6, 2019
  5. Language Arts Ms. Sue?? Writeacher?? Reed?

    what are the answers to the whole quiz, i'm new by the way.?

    posted on February 28, 2019
  6. Math

    181 and 327

    posted on February 14, 2019
  7. History

    your right

    posted on February 11, 2019
  8. Science

    That's not now stop!

    posted on February 11, 2019
  9. Science asap

    A C C A C 100%

    posted on October 23, 2018
  10. Art

    The ms. Sue on here is not the right Ms. Sue

    posted on May 16, 2018
  11. 2 problems---math

    alright, thank you!

    posted on April 12, 2018
  12. 2 problems---math

    sorry, for question 1 its x: 0; 1; 3; 6; 7

    posted on April 12, 2018
  13. General chemistry

    Ammonia?

    posted on February 12, 2018
  14. Calculus- Related rates

    Is dA=4/3?

    posted on March 1, 2017
  15. Calculus- Related rates

    So dr/dt is equals to 1/9pi? or i have miscalculated again?

    posted on March 1, 2017
  16. calculus

    Srry the question is incomplete... please help with these questions a. Is g(x) continuous at x=1 b. What type of discontinuity does it have

    posted on January 29, 2017
  17. Math

    25

    posted on January 18, 2017
  18. algebra

    .75(8x-24)-4x=-182 -492-18+328=-182 -510+328=-182 -182=-182 if x=-82

    posted on October 1, 2016
  19. algebra

    solve for x 0.75(8x-24)-4x=-182 6x-18-4x=-182 2x=-182+18 2x=-164 x=-82

    posted on October 1, 2016
  20. The Giver

    It's D because I am in connection acedmey

    posted on May 27, 2016
  21. Math

    3P = s Ps = 3

    posted on March 15, 2016
  22. Math I need help Please help me!!!!!!

    A car is traveling at a rate of 54 miles per hour. What is the car's rate in feet per second? How many feet will the car travel in 20 seconds? In your computations, use the fact that 1 mile is equal to 5280 feet.

    posted on March 13, 2016
  23. factorization

    How did you get 891? I'm confused on that... PLZ explain!

    posted on January 12, 2016
  24. Math

    aflyercracker

    posted on November 17, 2015
  25. Science 8th grade

    What gets hot and cold faster, solid or gas and why?

    posted on April 6, 2015
  26. Stats

    But, we know that the 5 came up two times in the first eight rolls.

    posted on August 23, 2014
  27. Science

    The cup becomes positively charged and I know this 100% the right answer.

    posted on March 10, 2013
  28. math

    first do what is in perenthises then do exponints then multiply then divide then add then subtract. you can remember this by doing p e m d a s pemdas!!!!!!!!!!

    posted on May 17, 2012
  29. Jobs(9th)

    you should reasearch some real interior designers and look up all of your questions

    posted on April 2, 2012
  30. Science

    the answer is letter c think of food food is chemical energy

    posted on April 2, 2012
  31. math

    i know but thanks anyway

    posted on April 2, 2012
  32. geometry

    40 multiplyed by 12 equalls area

    posted on April 2, 2012
  33. math help needed

    thanks CON

    posted on April 2, 2012
  34. Geometry

    plus wouldnt the answer be 36 because there both square and there distance isnt far

    posted on April 2, 2012
  35. Geometry

    whats a ratino and then ill help because i have no idea what that means

    posted on April 2, 2012
  36. math

    what

    posted on April 2, 2012
  37. math

    you dot need a calculator unless you memorized the area and you don't need tape unless its used to hold down string

    posted on April 2, 2012