Most popular questions and responses by Ash
  1. Socail Studies

    1.What can be inferred by the passage of the Black Codes A.Many Southerners were willing to allow African-Americans equally B.Many white Southerners wanted African Americans to remain as slaves C.Many white Southerners wanted African Americans to receive

    asked on February 7, 2018
  2. Bus. Math

    What is the net price equivalent Rate of 9-15/18? a) .63427 b) .36427 c) .63573 d) .36573 Answer: B?

    asked on March 23, 2016
  3. Biology

    Explain how human activities can cause an imbalance in biogeochemical cycling and lead to problems such as cultural eutrophication and fish kills.

    asked on October 17, 2014
  4. (Pre-Algebra) A

    Lesson 7: Coordinate Plane Essential Algebra Readiness(Pre-Algebra) A Unit 4: Real Numbers and the Coordinate Plane Has anyone done the Coordinate Plane Practice AND assessment? 1. Which point is located at (-3, -2)? (1 point) •C •D •F •G 2. Which

    asked on October 28, 2018
  5. Inverse trigonometry

    Prove that- tan^-1(1/2tan 2A)+tan^-1(cotA)+tan^-1(cot^3A) ={0,ifpi/4

    asked on April 8, 2018
  6. Geometry

    Kristen lives directly east of the park. The football field is directly south of the park. The library sits on the line formed between Kristen’s home and the football field at the exact point where an altitude to the right triangle formed by her home,

    asked on January 20, 2012
  7. math

    1. Jane has a checkbook balance of $68.00. She then writes two checks, one for $5.00 and one for $62.50. She also deposits $75.00. She then uses her calculator to determine her new balance. Which of the following is the correct series of keys she should

    asked on October 30, 2013
  8. Physics

    A person reaches a maximum height of 65cm when jumping straight up from a crouched position. During the jump itself, the person's body from the knees up rises a distance of around 50cm . To keep the calculations simple and yet get a reasonable result,

    asked on October 1, 2014
  9. Math

    find the sum of the interior angles of a nonagon. I know a nonagon has 9 sides.. A. 140 degrees B. 1,620 degrees C. 1,260 degrees D. 1,450 degrees If the question is asking for each interior angle then I think the answers A but if it's asking for the sum

    asked on January 27, 2015
  10. chemistry

    A scientist wants to make a solution of tribasic sodium phosphate,Na3PO4 , for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 550 ml of a solution that has a concentration of Na+ ions of 1.40M ?

    asked on February 7, 2012
  11. Calc

    A ladder 10 ft long rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of 1.3 ft/s, how fast is the angle between the ladder and the ground changing when the bottom of the ladder is 8 ft from the wall? (That is,

    asked on September 30, 2018
  12. Physics

    What is the average power output of a weightlifter who can lift 260 kg to a height of 1.9 m in 1.8 seconds?

    asked on February 3, 2011
  13. Physics

    A 67.5 kg sprinter exerts a force of 775 N on the starting block which makes a 20 degree angle to the ground. a) What was the horizontal acceleration of the sprinter? b) If the force was exerted for 0.340s, with what speed did the sprinter leave the

    asked on December 9, 2017
  14. physics

    to what height should a cylindrical vessel of diameter d be filled with a liquid so that due to force on the verticle surface of the vessel be equal to the force on the bottom

    asked on December 1, 2015
  15. math

    a school playground is in the shape of a rectangle 700 feet long and 200 feet wide. if fencing cost 20 dollars per yards what will it cost to place fencing around the playground

    asked on January 11, 2012
  16. Math

    1. is line "L" parallel to line "M"? *picture of a transversal.. lines L and M don't touch and one line crosses through line L and M to create a transversal. angles 124 and 118 are on the bottom left side of the transversal* I tried my best to explain the

    asked on January 27, 2015
  17. math

    at the end of every 3 months, Rita deposits $100 into an account that pays 5% compounded quarterly. After 5 yrs, she puts the accumulated amount into a certificate of deposit paying 8.5% compounded semiannually for 1 yr. when this certificate matures, how

    asked on March 27, 2011
  18. Chemistry

    Will the 90-100 mL of distilled water added to the acid solution (10.00 mL) significantly change the moles of H3O+ in the 1.00 M HCl solution? Why or why not?

    asked on October 5, 2013
  19. Chemistry

    You are given 1.226 g of a mixture of KClO3 and KCl. When heated, the KClO3 decomposes to KCl and O2, 2 KClO3 (s) → 2 KCl (s) + 3 O2 (g), and 246 mL of O2 is collected over water at 24 °C. The total pressure of the gases in the collection flask is 755

    asked on December 7, 2016
  20. chemistry

    26 protons and 24 electrons. write the symbol of ions

    asked on October 29, 2009
  21. Geometry

    A triangle has side lengths of 18 cm, 80 cm, and 81 cm. Classify it as acute, obtuse, or right.

    asked on January 20, 2012
  22. calculus

    An airplane's velocity with respect to the air is 580 miles per hour, and its bearing is 332 degrees. The wind, at the altitude of the plane, is from the SW and has a velocity of 60 mph. What is the true direction of the plane, and what is the speed with

    asked on May 24, 2012
  23. Physics

    Find the electric potential at the centre of the square of side 1m at the four corners of charges of q1, q2,q3,and q4 are placed having values 3×10^-8C,-3×10^-8C,-5×10^-8C and 6×10^-8C respectively.

    asked on April 10, 2018
  24. Econ

    Do you think a nation’s output should be distributed according to income or according to some other standard (such as basic human need)?

    asked on January 25, 2016
  25. Physics

    Someone attaches a 27 kg bale of hay to one end of a rope passing over a frictionless pulley connected to a beam in a hay barn. Someone else pull down on the opposite en of the rope with a force of 397 N. Ignoring the mass of the rope, what will be the

    asked on January 20, 2011
  26. English

    What is the theme of "Abalone, Abalone, Abalone" by Toshio Mori?

    asked on January 23, 2011
  27. Geometry

    Find the surface area of a sphere with a circumference of 40 ft. Round to the nearest tenth.

    asked on January 23, 2012
  28. English 1

    A common theme for each of these selections is? (A Cub Pilot, Barrio Boy, No Gumption, and I Know Why The Caged Bird Sings) a- to become mature, people must learn important lessons from experience b- to govern well, people in authority must treat young

    asked on September 12, 2014
  29. Business Math

    Jane is having difficulty deciding whether to put her savings in the Mystic Bank or in the Four Rivers Bank. Mystic offers a 12% rate compounded quarterly, and Four Rivers offers 14% compounded semiannually. Jane has $40,000 to invest and expects to

    asked on April 4, 2016
  30. Geometry

    The volume of a sphere is 2,098pi m3. What is the surface area of the sphere to the nearest tenth? 1,700 m2 146.2 m2 850 m2 26,364 m2

    asked on January 21, 2012
  31. Chemistry

    A commercial for a well known cleaning powder says that it "shakes out white, then turns blue" what type of reaction os occuring? what compound can one use to produce this effect?

    asked on November 3, 2010
  32. Geometry

    Find the area of a regular pentagon with a side of 6ft. Give the answer to the nearest tenth. 123.9ft2 49.5ft2 61.9ft2 12.4ft2

    asked on January 23, 2012
  33. chemistry

    how many milliliters of 5M NaCl are required to prepare 1500 ml of .002M solution?

    asked on February 5, 2009
  34. math

    1. Eliza Savage received a statement from her bank showing a checking account balance of $324.18 as of January 18. Her own checkbook shows a balance of $487.38 as of January 29. The bank returned all of the cancelled checks but three. The amounts of these

    asked on October 16, 2013
  35. math i need help plz!

    A store sells televisions for $360 and video cassette recorders for $270. at the beginning of the week its entire stock is worth $45,990. During the week it sells three quarters of the televisions and one third of the video cassette recorders for a total

    asked on March 29, 2011
  36. Chemistry

    Calculate the delta G of the reaction using the following information. 4HNO3+ 5N2H4 --> 7N2+ 12H2O Delta H(Kj/mol) -133.9 50.6 0 -285.8 Delta S(J/mol x K) 266.9 121.2 191.6 70.0

    asked on July 10, 2017
  37. math

    Keri walks her dog every morning. The length of the walk is 0.55 on each weekday. On each weekend day, the walk is 1.4 times as long as a walk on a weekday. How many kilometers did Keri walk in one week

    asked on October 1, 2015
  38. Math

    Marinda made a drink that contained 2 pints of Apple juice,3 pints of grape juice,and 2 pints of cranberry juice.How many pints of juice did Marinda make?

    asked on January 16, 2019
  39. physics

    Two chunks of ice are sliding on a frictionless frozen pond. Chunk A, with mass mA=5.0kg, moves with initial velocity vA1=2.0m/s parallel to the x-axis. It collides with chunk B, which has a mass mB=3.0kg and is initially at rest. After the collision, the

    asked on January 7, 2016

    Determine the volume of 0.125 M NaOH required to titrate to the equivalence point 25.0 mL of a 0.175 M solution of a monoprotic weak acid that is 20% ionized. Answer is 35.0 mL. How do you find it?! It's been a really long time since we talked about

    asked on March 29, 2013
  41. physics

    a rock is thrown vertically upward from ground level at t=0. At t= 1.5s, it passes the top of a tall tower and 1.0 s later, it reached its maximum height. what is the height of the tower?

    asked on February 2, 2015
  42. chem

    If 60.0 mL of 0.150 M CaCl2 is added to 50.0 mL of 0.100 M AgNO3, what is the mass in grams of AgCl precipitate?

    asked on March 2, 2009
  43. physics

    You have an spring gun. The end of the gun is at 1 meter above the ground. This gun is shoot horizontally with no air resistance. The cannon ball hits the ground 1.32 meters ahead from it was shoot. What is the cannon ball's initial velocity?

    asked on June 14, 2014
  44. Math

    A 100 foot vertical tower is to be erected on a side of a hill that makes a 6 degree angle with the horizontal. Find the length of each of the two guy wires that will be anchored 75 feet uphill and downhill from the base of the tower.

    asked on February 2, 2011
  45. Chemistry

    A 25.00 mL sample of a clear saturated solution of PbI2 requires 14.3 mL of a certain AgNO3(aq) for its titration. I^-(from satd PbI2)+ Ag^+(from AgNO3)= AgI(s) So, this is where I am. using the Ksp equation for PbI2: 7.1*10^-9=4x^3 solving for x gives me

    asked on March 18, 2012
  46. algebra 2

    A person playing a game of chance has a 0.25 probability of winning. If the person plays the game 20 times and wins half of that number of times, what is the difference between the theoretical probability and the experimental probability of that person

    asked on May 17, 2016
  47. Math

    The description of a TV is based upon the diagonal length. If the height of a TV is 24 inches and the width is 32 inches, what is the TV's diagonal length? A) 3 B) 4 C) 21 D) 40 How do i find the diagonal length?

    asked on January 11, 2019
  48. Probability

    Assume Z has a standard normal distribution. Use Appendix Table III to determine the value for z that solves each of the following: (Round your answer to 2 decimal places.) P(Z

    asked on March 21, 2014
  49. calculus

    A plane flies 810 miles from A to B with a bearing of 75 degrees. Then it flies 648 miles from B to C with a bearing of 32 degrees. Find the straightline distance from and bearing from C to A.

    asked on May 15, 2012
  50. linear programming app

    solve this linear programming problem; A chain saw requires 4 hours of assembly and a wood chipper 6 hours. A maximum of 48 hours of assembly time is available. The profit is $150 on a chain saw and $220 on a chipper. How many of each should be assembled

    asked on April 6, 2011
  51. Chemistry

    calculate the empirical formula. A chemist heats 50.00g of sulfur under controlled conditions to produce a sulfer-oxygen compund.The mass of the sulfur-oxygen compound is 100.00g. What is the empirical formula of the sulfur-oxygen?

    asked on October 20, 2010
  52. math

    The life of automobile voltage regulators has an exponential distribution with a mean life of six years. You purchase an automobile that is six years old, with a working voltage regulator and plan to own it for three years. a)What is the probability that

    asked on March 21, 2014
  53. linear programming app

    write the constraints as linear inequalities and identify all variables used. A canoe requires 8 hours of fabrication and a rowboat 5 hours. The fabrication department has at most 110 hours of labor available each week

    asked on April 3, 2011
  54. S.S

    Whose mill launched the factory system? A. James Monroe B. Eli Whitney C. Samuell Slater D. Francis Cabot Lowell I think it's D.. am I right?

    asked on January 23, 2015

    30.0 mL of 0.10 M Ca(NO3)2 and 15.0 mL of 0.20 M Na3PO4 solutions are mixed. After the reaction is complete, which of these ions has the lowest concentration in the final solution? A) Na+ B) NO3- C) Ca+2 D) PO4-3 Answer is C.. How do you solve it though?!

    asked on April 3, 2013
  56. Physics 203

    A 5m long diving board of negligible mass is supported by two pillars. One pillar is at the end of left of the diving board, the other is 1.50m away. Find the forces exerted by the pillars when a 90kg diver stands at the far end of the board.

    asked on April 9, 2013
  57. math

    Felipe has saved $625. He is starting a part-time job that pays him $150 a week, and he plans to save all of the money he earns. Which algebraic expression represents Felipe's total savings after x weeks? A.625x + 125 B.775x C.150x + 625 D.125x - 650 is it

    asked on October 2, 2012
  58. Chemistry

    In the determination of melting points, why cant you use water instead of mineral oil?

    asked on December 1, 2010
  59. Health

    Two key components to keeping your heart healthy that are within your control are exercise and.. A. diet B. Rest C. heredity D. enviroment I think it's B.. am I right?

    asked on January 11, 2015
  60. English

    Lesson 1: Introducing the Big Question Unit 3: Facts and Visions ________________________________ Thematic Vocabulary argument: n. a disagreement, often involving anger; other forms: argue, arguing, argumentative compromise: n. a solution in which people

    asked on November 4, 2018
  61. physics

    A 88-kg astronaut and a 1200-kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.25m/s directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into contact with

    asked on August 20, 2011
  62. math

    A cell phone company charges each customer a base rate of $15.00 per month for its services. The company also charges each customer $0.02 per minute used. Which algebraic expression represents each customer's monthly charge for m minutes? A.15 (0.02m) B.15

    asked on October 2, 2012
  63. physics , math

    The hydrostatic equation holds not just for air, but for other fluids such as water (air, though it is a gas, is often referred to as a 'fluid') as well. In the case of water the equation becomes even easier, as water (as opposed to air) can be treated as

    asked on June 9, 2017
  64. Chemistry

    Can calcium hydroxide solution be used to distinguish Co(NO3)2 and Fe(NO3)3 solutions using only the titration technique? Why or why not?

    asked on October 5, 2013
  65. math

    Three numbers multiplied together equal 2880. A X B X C= 2880 A X B=360 A X C= 160 A= B= C=

    asked on January 16, 2018
  66. Chemistry

    How is water of hydration related to measurement and how it is related to the law of definite composition?

    asked on November 3, 2010
  67. Geometry

    Find the surface area of a conical grain storage tank that has a height of 42 meters and a diameter of 20 meters. Round the answer to the nearest square meter. 3,028m2 3,971m2 1,357m2 1,671m2

    asked on January 23, 2012
  68. statistics

    a private opinion poll is conducted for a politician to determine why proportion of the population favors decriminalizing marijuana possession. how large a sample is needed in order to be 90 percent confident that the sample proportion will not differ from

    asked on June 15, 2015
  69. chemistry

    Suppose you have a solution containing both an iron ii salt and an iron iii salt. how would you proceed to identify both Fe 2+ and Fe 3+ in this solution?

    asked on February 12, 2013
  70. physics

    A 3.60 kg ball is dropped from the roof of a building 184.8 m high. While the ball is falling to earth, a horizontal wind exerts a constant force of 12.1 N on the ball. How long does it take to hit the ground? (acceleration of gravity = 9.81 m/s^2)

    asked on November 6, 2009
  71. accounting

    Santa Fe Company purchased merchandise for resale from Mesa COmpany with an invoice price of $24,000 and credit terms of 3/10,n/60. The merchandise had cost Mesa $16,000. Santa Fe paid within the discount period. Prepare entries that Santa Fe Company

    asked on April 4, 2011
  72. Physics 203

    A block with mass of 5.0kg is suspended from an ideal spring having negligible mass and stretches the spring 0.20m to its equilibrium position. A) What is the force constant of the spring? B) The spring is then stretched 0.80m from its equilibrium position

    asked on April 9, 2013
  73. physics

    a balloon is moving upwards with speed of 5m per second .when it is at height 98 m.a packet dropped from it .what velocity of packet when it strikes the ground

    asked on September 23, 2012
  74. Geometry

    Find the surface area of a conical grain storage tank that has a height of 42 meters and a diameter of 20 meters. Round the answer to the nearest square meter. 3,028m2 3,971m2 1,357m2 1,671ma

    asked on January 21, 2012
  75. Physics

    If you are standing on the edge of a canyon and yell into the canyon, how long will it take the echo to return to you if the opposite canyon wall is 1060.4 m away and the air temperature is 25.2 C?

    asked on February 28, 2010
  76. accounting

    A company purchased $4,000 worth of merchandise. Transportation costs were an additional $350. The company later returned $250 worth of merchandise and paid the invoice within the 2% cash discount period. What is the total amount paid for this merchandise

    asked on April 10, 2011
  77. Applied Mathematics references

    This is not a homework question. I'm trying to get help regarding a reference book. I'm planning to get do a math major at the university and Pure Mathematics,Applied Mathematics and Computer Science will be my main subjects. When I went through the

    asked on May 7, 2019
  78. Trig

    A road has a grade (slope) of 15%. What is the angle of elevation of the road, to the nearest degree?

    asked on March 18, 2019
  79. chemistry

    What mass of oxygen is needed for the complete combustion of 2.50×10−3 of methane?

    asked on February 7, 2012
  80. Algebra 2

    Elaine shoots an arrow upward at a speed of 32 feet per second from a bridge that is 28 feet high. The height of the arrow is given by the function h(t) = -16t2+32t + 28, where t is the time in seconds. a. What is the maximum height that the arrow reaches?

    asked on July 28, 2017
  81. calculus

    Verify the identity: (tanx+1)/(secx+cscx) = sinx

    asked on May 2, 2012
  82. History

    What motivated Prince Henry the Navigator to sponsor Portuguese exploration efforts? to spread Christianity to new lands and convert indigenous peoples to find a northwest passage to Asia and bolster trade with China to conquer the Aztec and Incan Empires

    asked on September 20, 2019
  83. Math

    According to math teachers what did the acorn say when it grew up

    asked on September 24, 2012
  84. Pre-Algebra

    You are making cookies for a bake sale. The recipe calls for 2 3/4 cups of flour. How much flour will you need if you triple the recipe?

    asked on September 23, 2019
  85. Chemistry

    1.29g H2 is allowed to react with 10.3g N2 , producing 1.86g NH3. What is the theoretical yield for this reaction under the given conditions? What is the percent yield for this reaction under the given conditions? I have been stucks for days now.

    asked on February 7, 2012
  86. US Government

    I am having a problem understanding what the different roles of the US President are responsibilities: What are"the Head of States" responsibilities? What are "The Chief Executive" responsibilities? What are the "Chief Diplomat" responsibilities? I think

    asked on January 31, 2010
  87. algebra

    solve log2x-6^256=4

    asked on April 24, 2017
  88. chemistry

    how could you determine whether all the potassium chlorate had been decomposed after heating it using the law of definite composition?

    asked on March 10, 2010
  89. Pre-Algebra

    A teacher wants to tape sheets of paper together to make a science banner. He wants the banner to be 127 1/3 inches long, and each sheet of paper is 8 1/2 inches wide. How many sheets of paper will he need?

    asked on September 23, 2019
  90. Chemistry

    If the pH of grapefruit is 3 and the pH of beer is 5, how many times more acidic is the grapefruit juice than the beer? According to the logarithmic scale

    asked on November 10, 2010
  91. physic

    Calculate the true mass (in vacuum) of a piece of aluminum whose apparent mass is 4.5000 kg when weighed in air.

    asked on August 8, 2010
  92. Physics

    A 37 kg child roller skates, initially at rest, rolls 2.0 m down an incline at an angle of 17 degrees with the horizontal. If there's no friction, what is the kinetic energy of the child at the bottom of the incline?

    asked on February 3, 2011
  93. physics

    A car is traveling at 100 km/h, due northwest. The driver puts on the brakes and turns the corner. Four seconds later, he is heading east at 50 km/h. What is the average acceleration

    asked on October 2, 2014
  94. algebra

    A train leaves the station at 9:00 pm traveling east at 36 miles per hour. A second train leaves the station at 10:00 pm traveling west at 42 miles per hour. At what time will both trains have traveled the same distance? I need help solving it :)

    asked on October 4, 2012
  95. science

    What is the relationship between a mineral and a rock? A.They are the exact same thing. B.A mineral is a building block of rocks. C.Minerals are only silicates while rocks are nonsilicates. D.A rock is always man-made while a mineral is naturally

    asked on October 3, 2012
  96. Physics

    A 37 kg child roller skates, initially at rest, rolls 2.0 m down an incline at an angle of 17 degrees with the horizontal. If there's no friction, what is the kinetic energy of the child at the bottom of the incline?

    asked on February 3, 2011
  97. Bible

    how can I apply the Book of Ruth to my life?

    asked on October 31, 2018
  98. physics 203

    The figure shows a 1.50kg block at rest on a ramp of height, h. When the block is released, it reaches the bottom of the ramp and moves across a surface that is frictionless except for one section of width 10cm that has a coefficient of kinetic friction

    asked on April 9, 2013
  99. algebra college

    find the remaining zeros of f. degree 4 zeros i, -18+i enter the remaining zeros of f please help me out!

    asked on August 27, 2012
  100. chemistry

    A student performing the water of hydration experiment cant seem to get his hydrate to constant weight. Several times he heats the compound, allows it t cool, and weighs it. But each time he does, he obtains a different mass. can you suggest some possible

    asked on November 3, 2010


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