Popular questions and responses by jess
  1. geometry

    the perimeter of a triangle is 59 inches. the longest side is 11 inches longer than the medium side, and the medium side is 3 inches more than the shortest side. Find the length of each side.

    asked on May 4, 2010
  2. english

    what does these quote mean? 1.)"my life for itself and not for a spectacle" 2.)An institution is the lengthened shadow of a man. 3.) Life only avails, not the having lived. 4.) Insist on yourself; never imitate Thanks for your help!

    asked on January 4, 2009
  3. history

    Which Chinese religious text, whose title translates to The Book of Changes, influenced Hinduism in India?

    asked on November 27, 2019
  4. chemistry

    I keep thinking that 3 is the van't hoff factor for ammonium chloride, but I keep getting my answer wrong. Any ideas?

    asked on February 11, 2011
  5. Math

    A theater group made appearances in two cities. The hotel charge before tax in the second city was $1000 higher than in the first. The tax in the first city was 4% , and the tax in the second city was 7% . The total hotel tax paid for the two cities was

    asked on April 1, 2013
  6. AP Chem

    CH3CH2NH2(aq) + H2O(l) CH3CH2NH3+(aq) + OH-(aq) Kb = 5.0e-4 Ethylamine, CH3CH2NH, a weak base reacts with water according to the equation above. A 50.0 mL sample of a ethylamine solution is found to have a pH of the solution 11.60. (a) Write the expression

    asked on April 23, 2013
  7. Math - Limits/Derivatives

    Suppose that for a company manufacturing calculators, the cost, revenue, and profit equations are given by C = 70,000 + 20x R = 300x - (x^2 / 20) P = R - C where production output in 1 week is x calculators. If production is increasing at a rate of 600

    asked on October 19, 2013
  8. chemistry

    23) The equilibrium constant for the gas phase reaction 2NH3 (g) N2 (g) + 3H2 (g) is Keq = 230 at 300 °C. At equilibrium, __________. A) reactants predominate B) products predominate C) only products are present D) roughly equal amounts of products and

    asked on November 18, 2010
  9. Math - Decimals

    Is 0.052 or 0.05 a bigger number?

    asked on June 5, 2013
  10. Algebra

    allan borrowed $6400 from his father to buy a car. he repaid him after 9 months with interest of 8% per year. find the total amount he repaid.

    asked on November 30, 2017
  11. math

    the longest straight line that can be drawn to connect two point on the circumference of a circle whose radius is 9 inches is A. 9 inches B. 18 inches C. 28.2743 D. 4.5 inches is the correct answer b?

    asked on August 3, 2018

    Bender Electronics buys keyboards for its computers from another company. The keyboards are received in shipments of 175 boxes, each box containing 30 keyboards. The quality control department at Bender Electronics first randomly selects one box from each

    asked on October 24, 2014
  13. Calculus - Integrals

    The projected rate of increase in enrollment at a new college is estimated by dE/dt = 6,000(t+1)^-3/2 where E(t) is the projected enrollment in t years. If the enrollment is 3,000 now (t=0), find the projected enrollment 15 years from now.

    asked on November 21, 2013

    A wet bar of soap slides freely down a ramp 12.0 m long, inclined at 74.0 degrees. How long (in seconds) does it take to reach the bottom? (Neglect friction.)

    asked on March 7, 2012
  15. Physics Part A HELP!!

    4.) In coming to a stop, a car leaves skid marks 80m long on the highway. Assuming a DEceleration of 7.00 m/s^2 (m/s/s), estimate the speed of the car just before breaking. 6.) A car traveling @ 90km/h strikes a tree. The front end of the car compresses

    asked on December 14, 2015
  16. 11th grade-Logs

    log x = 1/2 (log a + Log b - log c) express x in terms of a,b,and c.

    asked on December 21, 2009
  17. Exexponential Growth Modeling

    Researchers find that there are 60 Raccoons on an island. When they return a year later, they find that there are 84. What is the annual population growth rate for the raccoons?

    asked on April 30, 2016
  18. Math

    Sue decides to collect postcards. She starts her collection with seven cards. Every week, she buys three more cards to add to her collection. How many weeks will it take her to have more than 30 cards? 11 7 8 30 Can somone help me figure out the equation

    asked on September 7, 2018
  19. Chemistry

    1. A combination reaction may also be a displacement reaction. True or False 2. The combustion of an element is always a combination reaction. True or False For number 1, I first thought true, but then again, nothing is being displaced in a combination

    asked on November 19, 2014
  20. Geometry

    In a garden, a birdbath 2ft 6 in. tall casts an 18-in. shadow at the same time an oak tree casts a 90-ft shadow. How tall is the oak tree?

    asked on April 14, 2014
  21. Calculus - Optimization

    A fence is to be built to enclose a rectangular area of 800 square feet. The fence along 3 sides is to be made of material $4 per foot. The material for the fourth side costs $12 per foot. Find the dimensions of the rectangle that will allow for the most

    asked on November 17, 2013
  22. Math

    A certain triangle has a perimeter of 3080 mi. The shortest side measures 71 mi less than the middle​ side, and the longest side measures 373 mi more than the middle side. Find the lengths of the three sides.

    asked on September 6, 2018
  23. english

    'By now, everyone knows that eating right and exercising are important.' What change should be made to this sentence? A. Replace knows with knows' B. Insert comma after right C. Replace important with important? D. No correction necessary 'People who

    asked on July 18, 2018
  24. math

    How can you use subtraction to complete an addition pattern? use this exercise as an example: 32, 39, 46, 53, 60, 67.

    asked on February 19, 2012
  25. history

    Which identifies the conflict that arose over rubber production in the Belgian Congo? The desire of the Congolese to keep control of their rubber production led to an international war between Belgium and the Congo. Global demand for rubber and a lust for

    asked on February 4, 2020
  26. Biology!!

    1. what's a huge difference between the chemical equations for Respiration and Alcoholic fermentation &... What determines whether a facultative organism will go through respiration or fermentation *For the first part of the Question, (I looked it up but I

    asked on May 16, 2017
  27. Chemistry

    Chromium (III) iodate has a Ksp at 25°C of 5.0 x 10–6. 125 mL of a solution contains 0.0050 mol L–1 Cr (III) ion. What is the molar solubility of chromium (III) iodate at 25°C? a. 8.4 x 10–2 mol L–1 b. 2.2 x 10–3 mol L–1 c. 6.3 x 10–2 mol

    asked on May 27, 2016
  28. Calculus

    Given that the antiderivative of f(x) = e4x is F(x) = 1/4e^4x+C, evaluate the integral from 0 to 2 of e^4x, dx. e^8 1/4(1-e^8) 1/4(e^8-1) 1/4e^8 (MY ANNSWER)

    asked on March 15, 2016
  29. english

    In the Odyssey, which of Odysseus' traits allows him to triumph in the bow-and-arrow challenge that Penelope sets for her suitors? (1 point) his love for Penelope his loyalty to the gods **** his pride in his bow his skill as a marksman i think B

    asked on January 29, 2016
  30. Finance - Capital Budgeting/Bid Price

    We have been requested by a large retailer to submit a bid for a new point-of-sale credit checking system. The system would be installed, by us, in 89 stores per year for three years. We would need to purchase $1,300,000 worth of specialized equipment.

    asked on December 1, 2013
  31. Macroeconomics

    The money supply in Freedonia is $200 billion. Nominal GDP is $800 billion and real GDP is $400 billion. Assuming that velocity is stable, if real GDP grows by 10 percent this year, and if the money supply does not change this year, what is the change of

    asked on April 9, 2013
  32. Bio HELP!!!!

    what is the name of the process throughh which polypeptides, polysaccharides or triglycerides are catabolised (broken down)?

    asked on July 7, 2012
  33. 11th grade physics

    A car slows down from +32 m/s to +8 m/s in 4s. Calculate the acceleration .

    asked on November 29, 2010
  34. chemistry

    The two isotopes of uranium, 238U and 235U, can be separated by effusion of the corresponding UF6 gases. What is the ratio (in the form of a decimal) of the root-mean-square speed of 238UF to that of 235UF6 at constant temperature?

    asked on November 9, 2010
  35. Maths

    If g(x)>0 for all real values of x, which of the following could be function g? a) g(x)= x+1 b) g(x)=x-1 c) g(x)= x^2+1 d) g(x) = x^2-1 e) g(x) = x^3 + 1

    asked on July 12, 2010
  36. english

    In the story told by Outa Karel in “The Little Red Tortoise,” why is the little red tortoise considered a dynamic character? Select all that apply. The Little Red Tortoise 1.He shows different emotions, from being brave to face the Blue One to being

    asked on June 10, 2020
  37. Math

    A student experiences difficulty with malfunctioning alarm clocks. Instead of using one alarm clock, he decides to use three. What is the probability that at least one alarm clock works correctly if each individual alarm clock has a 90% chance of working

    asked on October 28, 2019
  38. physics

    A catapult launches a cat from ground level to a target located on the ground. The cat leaves the catapult moving at 100 km/h at an angle of 40º. a) What is the cat’s velocity half-way through the trajectory (size and direction)? b) What is the cat’s

    asked on June 18, 2019
  39. Math

    A boy is mowing a rectangular lawn 40ft long and 30ft wide. He has cut all of it except for a rectangle that is 20ft long and 15ft wide. What fractional part of the lawn remains uncut? I need helping figuring out how to solve this. My answer sheet says its

    asked on November 13, 2016
  40. Calculus - Optimization

    A parcel delivery service a package only of the length plus girth (distance around) does not exceed 24 inches. A) Find the dimensions of a rectangular box with square ends that satisfies the delivery service's restriction and has a maximum volume. What is

    asked on November 16, 2013
  41. algebra 2

    write an explicit formula for the sequence of 1/2, 3/7, 1/3, 5/19, 3/14

    asked on April 30, 2012
  42. Precalculus

    If sinx= -1/4 and x terminates in the third quadrant, find the exact value of sin2x My answer is sqrt-15/8

    asked on August 6, 2011
  43. Physics

    If a projectile is fired straight up at a speed of 10 m/s, the total time to return to its starting position is about ? -Hfinal=hinitial+ vinitial*t -4.9t^2 0=0+10t-4.9t^2 when I solved for t I got .49t. Also, where did 4.9 come from? A man leans over the

    asked on September 9, 2007
  44. History

    What was the result of the passage of the Fourteenth Amendment? - Chinese immigration was suspended for 10 years. - All African Americans formally gained US citizenship. - A basic literacy test was required to become a US citizen. - Irish immigration

    asked on May 28, 2020
  45. biology

    What must a phenylketonuria patient leave out of his or her diet? a specific amino acid all carbohydrates some specific carbohydrates all amino acids

    asked on January 8, 2020
  46. physics

    After landing safely on the target the cat tries another projectile apparatus. This time the cat is shot out of a cannon over a 30 m high wall. The cat is launched at an angle of 55º0 and can be assumed to be at ground level during launch. With what speed

    asked on June 18, 2019
  47. Science

    What is the density of a book whose mass is 1,800 g and whose volume is 300 cm3? *My Answer*You want to identify the numbers first, density = mass ÷ volume. Which would give you, 1800g ÷ 300 cm³ = 6 g/cm³. *Cant Figure Out *What is the mass of a ball

    asked on September 29, 2017
  48. Math

    A charter fishing company buys a new boat for $224,000 and assumes that it will have a trade-in value of $115,200 after 16 years. Find a linear model for the depreciated value V of the boat t years after it was purchased.

    asked on October 23, 2013
  49. physics

    at what altitude should a satellite be placed into circular orbit so that its orbital period is 48 hours? the mass of the earth is 5.976x10^24 kg and the radius of the eatrh is 6.378x10^6 m.

    asked on March 23, 2011
  50. math

    The points A (7,6) and B (2,1) are 3 units and 2 units respectively from the line L and are on the opposite sides of L. Find the coordinates of the point where the interval AB crosses the line L.

    asked on January 6, 2011
  51. Literature

    Please can you check my answer.. 13. According to Renaissance philosophy, commoners often represent A. reason. C. pride. B. love. D. appetite. I think it it... B. love. It that correct ?

    asked on January 18, 2010
  52. History

    Why is the elasticity of the Constitution important to minority groups

    asked on May 29, 2020
  53. math

    the greatest common factor of 2x4x6x8x10 and 1x2x3x4x5 is A. 2 B. 4 C. 8 D. 120

    asked on September 1, 2018
  54. Chemistry

    The temperature of a lead fishing weight rises from 26 C to 38 C as it absorbs 11.3 J of heat. What is the mass of the fishing weight in grams? ( The specific heat capacity of lead is 0.128 J /g C )

    asked on February 15, 2018
  55. Physics

    A 72.0 kg swimmer jumps into the old swimming hole from a tree limb that is 4.00 m above the water. Part A- Use energy conservation to find his speed just as he hits the water if he just holds his nose and drops in. Part B- Use energy conservation to find

    asked on November 24, 2017
  56. Physics

    A spring is 16.2 cm long when it is lying on a table. One end is then attached to a hook and the other end is pulled by a force that increases to 28.0 N , causing the spring to stretch to a length of 19.0 cm . Part A What is the force constant of this

    asked on November 24, 2017
  57. maths

    a car travels due south for 3km the due east for 8km. What is the true bearing of the car from the starting point?

    asked on February 11, 2017
  58. math

    i have four digits i am more than 2500 i am less than 3000 my hundred digits id 6 my tens digit is one less than my hundreds digit my unit digit is 0 what number am i?

    asked on February 7, 2017
  59. english

    II. By the end of Romeo and Juliet, Paris and Romeo, both of whom loved Juliet, are dead. The two characters, however, are very different. Write an essay comparing and contrasting the two men. The introduction of your essay should include an

    asked on March 14, 2016
  60. College Algebra

    Solve the problem. Jon has 1162 points in his math class. He must have 86% of the 1500 points possible by the end of the term to receive credit for the class. What is the minimum number of additional points he must earn by the end of the term to receive

    asked on February 10, 2012
  61. chemistry

    Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO(s) + H2O(l) ¨ Ca(OH)2(s) In a particular experiment, a 2.00-g sample of CaO is reacted with excess water and 2.14 g of Ca(OH)2 is recovered. What is the percent

    asked on October 26, 2011
  62. calculus

    Find the differential dy of the given function: y=xcosx would this just be dy=(cosx-xsinx)dx

    asked on November 8, 2010
  63. physics

    A meter stick is pivoted at its 50-cm mark but does not balance because of non-uniformities in its material that cause its center of gravity to be displaced from its geometrical center. However, when masses of 150 and 200 grams are placed at the 10-cm and

    asked on June 25, 2010
  64. Stats

    The Economic Policy Institute periodically issues reports on worker’s wages. The institute reported that mean wages for male college graduates were $37.39 per hour and for female college graduates were $27.83 per hour in 2017. Assume the standard

    asked on February 25, 2020
  65. biology

    Which statements accurately describe the electron transport chain? Select all that apply. a: It produces carbon dioxide. b: It produces oxygen. c: It produces water and a high amount of ATP. d: It uses electrons released from NADH and FADH2.

    asked on January 8, 2020
  66. physics

    ethys, one of Saturn's moons, travels in a circular orbit at a speed of 1.1x104 m/s. The mass of Saturn is 5.67x1026 kg. Calculate a) the orbital radius in kilometres.( i know how to do this part, the answer is 3.1x10^8 m) b) the orbital period in Earth

    asked on June 19, 2019
  67. Chemistry

    Classify the substances as atomic elements, molecular elements, molecular compounds, or ionic compounds. CO2, HCl, Al2S3, Cd, F2,Ag,O2,NaCl

    asked on July 18, 2017
  68. Alg

    describe the end behavior of the graph of the polynomial function. Then evaluate the !@#$%^&ntion for x=-4, -3, -2, -1, 0, 1, 2, 3, 4. I'm confused on this. Help.

    asked on June 12, 2015
  69. Math - Limits/Derivatives

    If a price-demand equation is solved for p, then price is expressed as p = g(x) and x becomes the independent variable. In this case, it can be shown that the elasticity of demand is given by E(x) = - [g(x) / xg'(x)]. Use the given price-demand equation to

    asked on October 19, 2013
  70. physics

    An object moves along a circular path with a constant speed, |⃗vo|. (Semi Circle with point A on one side point B on the other. Looks like a 90 degree angle with points A and B on either side of the hypotenuse.) The average acceleration in going from A

    asked on November 8, 2012
  71. chemistry

    iron+sulphur together are a mixture of small grains yellow and dark grey.Its chemical symbol is 'Fe + S'.When it reacts with oxygen they create a new chemical substance; Iron Sulphide. What do you put for 'explain the reaction using the Big Idea of Energy?

    asked on April 10, 2011
  72. science

    What i the normal anatomy of sickle cell anemia?

    asked on September 23, 2008
  73. English Lit

    I have to 'discuss the language' of some quotes which I have taken out of the text which I'm doing, but I'm not sure what to do. With this, do I have to talk about punctuation marks, specific words? Thanks!

    asked on September 23, 2008
  74. algebra

    what happened when two fruit companies merged? this question is on a worksheet i have to do.

    asked on March 11, 2008
  75. biology

    When a biochemical reaction occurs, what is the chemical substance that results? catalyst reactant substrate product

    asked on January 8, 2020
  76. Chemistry

    How do we know when x is negligible when calculating equilibrium concentrations?

    asked on October 2, 2019
  77. Chemistry

    1. The value of ΔH° for the reaction below is -6535 kJ. _________ kJ of heat are released in the combustion of 16.0 g C6H6 (l). 2C6H6 (l) + 15O2 (g) --> 12CO2 (g) + 6H20 (l) 3. Given the following reactions CaCO3 (s) --> CaO (s) + CO2 (g) ΔH = 178.1 kJ

    asked on October 31, 2017
  78. chemistry

    The equilibrium constant for the reaction Cu3(PO4)2(s) 3 Cu2+(aq) + 2 PO43–(aq) is K = 1.40 x 10–37. Suppose that a beaker is filled to 1 L with a solution containing [Cu2+] = [PO43–] = 10.0 nM, and 300.0 g Cu3(PO4)2 . Which of the following

    asked on June 7, 2016
  79. Algebra 2

    How would you write a polynomial function with rational coefficients so that P(x)=0 has the given roots? The given roots are -2,-2,3,5

    asked on February 14, 2016
  80. Personal fitness

    There are three important benefits to the warm up session: (1 point) flexibility is increased, the muscle is pushed to its full potential, and the chance of dizziness or fainting caused by the pooling of blood in the extremities is reduced. aids in the

    asked on January 28, 2016
  81. Chemistry

    If 3.0 liters of oxygen gas react with excess carbon monoxide at STP, how many liters of carbon dioxide can be produced under the same conditions? 2 CO (g) + O2 (g) ---> 2 CO2 (g)

    asked on February 4, 2015
  82. Chemistry

    1. Write a balanced molecular equation for the reaction of solid AgNO3 with aqueous NaCl. Be sure to include the correct number of coefficients and the state of the species (aq, s, l or g). 2. Write the total ionic equation for this reaction, including all

    asked on November 26, 2014
  83. Chemistry

    Use standard enthalpies of formation to determine ΔHorxn for: 2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(l) Enter in kJ.

    asked on October 21, 2014
  84. Chem

    An electrochemical cell based on the decomposition of H2O2 can be constructed based on the half-reactions in the table below. Half-Reaction | Standard Reduction Potential, E° H2O2+ 2e- => 2 OH- | 0.88 V O2+ 2 H2O + 2e- => H2O + 2 OH- | -0.15 V (d)

    asked on April 23, 2013
  85. math

    this was emily's full day yesterday: she spent 8 hours sleeping, 1 hour in the shower, 6 hours in class, 2 hours eating and snacking, 4 hours studying, and 3 hiurs watching tv. What percent of her day was spent studying.

    asked on March 6, 2013
  86. math

    a movie theater has 250 seats. One hundred tickets have been sold. What percent of fhe theater is filled?

    asked on March 6, 2013
  87. Physic

    A block (mass 2.4 kg) is hanging from a massless cord that is wrapped around a pulley -3 2 (moment of inertia of the pulley = 1.3 x 10 kg·m ), as the drawing shows. Initially the pulley is prevented from rotating and the block is stationary. Then, the

    asked on February 4, 2013

    Fats help maintain your cell membranes. (1 point) True False 12. Your body does not use energy when you sleep. (1 point) True False 13. People with anorexia nervosa eat large amounts of food and then purge. (1 point) True False 14. Your body image is the

    asked on December 5, 2012
  89. Physical Science

    The conversion of water to ice is considered a physical change, whereas the conversion of iron to rust is considered a chemical change. Why?

    asked on April 19, 2012
  90. Precalculus

    2-3cosx=5+3cosx 0 degrees is less than or equal to x less than or equal to 180 degrees Can you please show me step by step in detail. Please do not skip a step. Thanks!

    asked on August 6, 2011
  91. physics

    A canoe of mass 70 kg with a paddler of mass 55 kg are in a river. If the river's current exerts a force of 15 N [E] while the paddler is paddling with an average force of 22 N [N38degreesW], find the acceleration of the canoe and paddler. Use both a

    asked on April 6, 2011
  92. english

    Which element of a short story would be most important to a story about a mad scientist stealing a secret weapon?

    asked on April 6, 2011
  93. Chemistry

    I have a question which asks... What is the Oxidation number of Nitrogen in Cu(NO3)2 I know the answer is 5+ but how do you get that?? Cu= 2+ O= 2- (Theres 3 of them so -2x3=-6...then, theres a two out of the brackets so 6- x 2 =-12) +2 - (-12)= -10? And

    asked on April 6, 2011
  94. Chemistry

    I have a question which asks... What is the Oxidation number of Nitrogen in Cu(NO3)2 I know the answer is 5+ but how do you get that?? Cu= 2+ O= 2- (Theres 3 of them so -2x3=-6...then, theres a two out of the brackets so 6- x 2 =-12) +2 - (-12)= -10? And

    asked on April 6, 2011
  95. physics

    a 1 kg mass is attached to a spring hanging vertically and hangs at rest in the equilibrium position. the spring constant of the spring is 1 n/cm. the mass is pulled downward 2 cm and released. what is the speed of the mass when it is 1 cm above the point

    asked on March 23, 2011
  96. Chemistry

    How many moles of HCl are present in a 50mL 3M solution of HCl?

    asked on January 12, 2011
  97. geometry

    Triangle ABC has the following angle measures. Angle A = 44. Angle B = 4x. Angle C = 2x + 16. Find the measure of angle C.

    asked on December 16, 2010
  98. Chemistry

    For each reaction, complete and balance the equation and give the net ionic equation. a) KOH(aq)+ZnCl2(aq)-> KCl2+ZnOH The second half of the equation is how i had done on the exam but he said its not balanced. How do I balance this? How would it look. I

    asked on November 10, 2010
  99. physics

    A bucket of mass 2.20 kg is whirled in a vertical circle of radius 1.15 m. At the lowest point of its motion the tension in the rope supporting the bucket is 28.0 N. a) Find the speed of the bucket. b)How fast must the bucket move at the top of the circle

    asked on November 4, 2010
  100. algebra

    A chemist mixes some 20% acid solution with pure 100% acid to increase the concentration. How much pure acid and acid solution should be mixed to form 100 milliliters of 40% acid solution?

    asked on August 12, 2010


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