Popular questions and responses by Brandon
  1. science

    What would happen if blood entering the heart mixed with blood leaving the heart?

    asked on October 27, 2011
  2. physics

    A barge with mass 1.0×105 kg is proceeding down river at 5.8 m/s in heavy fog when it collides broadside with a barge heading directly across the river (see the figure). The second barge has mass 2.58×105 kg and was moving at 4.2 m/s. Immediately after

    asked on November 6, 2009
  3. Chemistry

    Calculate [H3O+] in the following aqueous solution at 25 ∘C: [OH−]= 1.9×10−9M Calculate [H3O+] in the following aqueous solution at 25 ∘C: [OH−]= 2.1×10−2M Calculate [H3O+] in the following aqueous solution at 25 ∘C: [OH−]= 6.1×10−12M

    asked on April 29, 2014
  4. Chemistry

    Enter the balanced complete ionic equation for HCl(aq)+K2CO3(aq)→H2O(l)+CO2(g)+KCl(aq) Would it be: 2H+(aq) + 2Cl^-(aq) + 2K^+(aq) + CO3^2-(aq) => H2O(l) + CO2(g) + 2KCl(aq)? Thanks

    asked on November 13, 2019
  5. Pyhsical Science

    Which of the following statements is true about scientific theories? A. Scientific theories become scientific laws. B. Scientific theories are never proven. C. Scientific theories become hypotheses. D. Scientific theories summarize patterns found in

    asked on August 27, 2013
  6. Probability

    A customer at Cavallaro’s Fruit Stand picks a sample of 3 oranges at random from a crate containing 60 oranges, of which 4 are rotten. What is the probability that the sample contains 1 or more rotten oranges?

    asked on July 23, 2016
  7. geometry

    A slide 4.1 meters long makes an angle of 35 degrees with the ground. To the nearest tenth of a meter how far above the ground is the top of the slide. Could someone please explain don't want just answer would like to know how to do the work.

    asked on February 19, 2012
  8. Math (Statistics)

    In exercise 12, the following data on x = average daily hotel room rate and y = amount spent on entertainment (The Wall Street Journal, August 18, 2011) lead to the estimated regression equation ŷ = 17.49 + 1.0334x. For these data SSE = 1541.4. City:

    asked on April 30, 2017
  9. Physics

    Three identical charges of 2.0 uC are placed at the vertices of an equilateral triangle, 0.15m on a side. Find the net force acting on each angle.

    asked on February 22, 2012
  10. math

    The height of Dougal is 1.84 metres. The height of Seb is 1.7 metres. Write the height of Dougal as a fraction of the height of Seb. Give your answer in its simplest form.

    asked on March 27, 2020
  11. trig

    what is the reference angle for 17 pi/12?

    asked on August 23, 2011
  12. Physics

    Need Help with physics! Two cars drive on a straight highway. At time t = 0, car 1 passes mile marker 0 traveling due east with a speed of 17.0 m/s. At the same time, car 2 is 1.3 km east of mile marker 0 traveling at 30.0 m/s due west. Car 1 is speeding

    asked on October 4, 2012
  13. geometry

    A slide 4.1 meters long makes an angle of 35 degrees with the ground. To the nearest tenth of a meter bow far above the ground is the top of the slide? sin=35 x/4.1 x=4.1 sin=35 not sure how to do this

    asked on February 18, 2012
  14. physics

    Superguy is flying at treetop level near Paris when he sees the Eiffel Tower elevator start to fall (the cable snapped). His x-ray vision tells him Lois LaTour is inside. If Superguy is 1.00 km away from the tower, and the elevator falls from a height of

    asked on June 10, 2010
  15. Math

    John's high score on the Asteriud Game was 326,700. Mike's high score was 418,200. Rebecca just played the game and her high score was halfway between John's and Mike's. What was Rebecca's score?

    asked on September 17, 2012
  16. geometry

    Which type(s) of symmetry does the uppercase letter H have? my answer i believe is reflectional symmetry Which type of symmetry is shown by the lowercase letter w? my answer i believe is rotational symmetry. Could someone please check and explain.

    asked on March 5, 2012
  17. Math (Statistics: Test Statistic, Proportion)

    The Pew Research Center Internet Project, conducted on the 25th anniversary of the Internet, involved a survey of 857 Internet users (Pew Research Center website, April 1, 2014). It provided a variety of statistics on Internet users. For instance, in 2014,

    asked on April 6, 2017
  18. Algebra

    Slim Johnson was usually the best free-throw shooter on his basketball tam. Early in the season, however, he had made only 9 of 20 shots. By the end of the season, he had made all the additional shots he had taken, thereby ending with a season reacord of3

    asked on August 11, 2011
  19. geometry

    In the graph below, point D is reflected across the y-axis. What are the coordinates of it's image? The graph looks like D is below the x-axis to the right 3 places from y-axis and down 1 place from x-axis. So would my answer be (3,1)?

    asked on March 5, 2012
  20. Math

    Translate the sentence into an equality. The sum of a number times 5 and 27 is at most −26.

    asked on September 27, 2016
  21. Math

    What number is 4 tens more than 26.?

    asked on January 9, 2013
  22. science

    displacement vectors of 5km north, 3km east, 2km south, and 3km west combine to a total displacement of? 3km north 13km west 0km 2km south I think 13km west

    asked on February 17, 2012
  23. geometry

    Can someone explain how you get the answer b/15. Given the proportion a/b=8/15, what ratio completes the equivalent proportion a/8=?/?. I'm not sure if there is an equation or step you use to get the answer.

    asked on January 24, 2012
  24. algebra

    Molly deposits $200 in a savings account that has a 20% interest rate compounded annually. What will be her total after 3 years?

    asked on October 20, 2016
  25. Chemistry

    Help please, What is the minimum mass of NH4HS that must be added to the 5.00-L flask when charged with the 0.350g of pure H2s(g), at 25 ∘C to achieve equilibrium? Ammonium bisulfide, NH4HS, forms ammonia, NH3, and hydrogen sulfide, H2S, through the

    asked on September 16, 2013
  26. english

    help diagram sentence: Sandra and I are planning to go to the mall tomorrow, but today I am working on my paper.

    asked on June 28, 2010
  27. physics

    A 5.00-kg object placed on a frictionless, horizontal table is connected to a cable that passes over a pulley and then is fastened to a hanging 9.00-kg object. Draw free-body diagrams of both objects. Find the acceleration of the two objects and the

    asked on March 25, 2010
  28. Chemistry

    Explain why olive oil has a higher viscosity than water, by selecting an appropriate word from the provided list and filling in the following blanks. Oleic acid has a higher viscosity than water because it is a much________ molecule than water with

    asked on January 26, 2017
  29. Math: Thinking Mathematically

    A flagpole has the height of 16 yards It will be supported by three cables, each of which is attached to the flagpole at a point 4 yards below the top of the pole and attached to the ground at point that is 9 yards from the base of the pole, Find the total

    asked on March 21, 2014
  30. Physical Science

    Which of the following does NOT show the law of conservation of mass? A. 24 g of Mg burn in 32 g O2 to produce 56 g of MgO. B. 24 mL of Mg burn in 32 mL O2 to produce 56 mL of MgO. C. 2 atoms of Mg react with 1 molecule of O2 to produce 2 units of MgO. D.

    asked on August 27, 2013
  31. geometry

    A microscope shows you an image of an object that is 80 times the actual size. Therefore, the scale factor of the enlargement is 80. An insect has a body length of 7 millimeters. What is the body length of the insect under the microscope? I know it's 560,

    asked on March 6, 2012
  32. Physics

    When an 81.0 kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 2.25 103 J. By how much does the potential energy of a 17.0 kg child increase when the child climbs a normal staircase

    asked on November 2, 2008
  33. Physics

    A 54 kg box is being pushed a distance of 7.0 m across the floor by a force P whose magnitude is 153 N. The force P is parallel to the displacement of the box. The coefficient of kinetic friction is 0.25. Determine the work done on the box by each of the

    asked on October 13, 2008
  34. Math

    If a seed is planted, it has a 70% chance of growing into a healthy plant. If 7 seeds are planted, what is the probability that exactly 1 doesn't grow? Here What I did I thought its premutation but some reason I got that wrong, I multiple by (0.10) and

    asked on April 18, 2017
  35. Math (Statistics)

    The Centers for Disease Control reported the percentage of people 18 years of age and older who smoke (CDC website, December 14, 2014). Suppose that a study designed to collect new data on smokers and nonsmokers uses a preliminary estimate of the

    asked on April 5, 2017
  36. Math

    The point (5,-2) in on the terminal side of an angle t. Find cos

    asked on November 16, 2016
  37. Algebra II

    the hypotenuse of a right triangle is 25 inches and the height is 5 inches more than its base. what is the height of the triangle?

    asked on November 5, 2016
  38. math

    suppose you deposit $3000 in a savings account that pays interest in a a rate of 4%. if no money is added or withdrawn from the account, how much will be in the account after ten years.

    asked on November 9, 2015
  39. Algebra 2

    From 1990 to 1994, the mail order sales of health products in the United States can be modeled by S = 10t^3 + 115t^2 + 25t + 2505 where S is the sales (in millions of dollars) and t is the number of years since 1990. In what year where about $3885 million

    asked on September 17, 2014
  40. english

    Identify the simple predicate in the following sentence. Our basketball team will play against Wilson High School on Friday night.

    asked on July 30, 2012
  41. English

    1)Read the passage below from "No Dogs Bark" and select the one that best represents imagery in the story. a)"Now and then he seemed to sleep." b)"The old man backed ou to a thick wall and shifted load but didn't let it down fron his shoulders." c)"The

    asked on January 9, 2012
  42. Algebra

    What number must be added to the numerator and denominator of the fraction 7/19 to make the resulting fraction qual to 3/4?

    asked on August 11, 2011
  43. mathematics

    After his first six biology tests, Ruben has a mean score of 78.What score does Ruben need on the next test to raise his average (mean) to 80?

    asked on August 11, 2019
  44. Algebra

    The functions f(x) and g(x) are described below: f(x) = 32x + 8 g(x) = 32x − 9 The graph of g(x) is obtained by shifting down the graph of f(x) by _____ units. Numerical Answers Expected! Answer for Blank 1: „ð Question 11 (Multiple Choice Worth 5

    asked on November 24, 2015
  45. language arts

    Identify the complete adjective clause. The car I drive has 50,000 miles on the odometer.

    asked on September 24, 2014
  46. Econ

    If a pure monopolist can price discriminate by separating buyers into two or more groups: A.the marginal revenue curve and the total revenue curve will now coincide. B.the marginal revenue curve will now shift to a position above the demand curve. C.the

    asked on November 30, 2012
  47. Calculus

    integral of cscx^(2/3)(cot^3)x i know that cot^2x is csc^2(x)-1, but i just don't understand how to solve the cscx^(2/3), any help? i also know that its trig integrals/substitution...

    asked on June 10, 2012
  48. geometry

    the endpoints of AB are A(9,4) and B(5,-4) the endpoints of its image after a dilation are A1(6,3) and B1(3,-3) explain how to find the scale factor. Is there someone that can help me with this problem and explain foe me?

    asked on March 7, 2012
  49. geometry

    A blueprint for a house has a scale factor of 1:35. A wall in the blueprint is 3inches. What is the length of the actual wall? Can someone explain how to figure scale factor?

    asked on March 6, 2012
  50. Physics

    A boy starts at rest and slides down a frictionless slide as in the figure below. The bottom of the track is a height h above the ground. The boy then leaves the track horizontally, striking the ground a distance d as shown. Using energy methods, determine

    asked on October 17, 2011
  51. Algebra 2

    Use the rational root theorem to determine which of the following could not be a root of 6x^3+23x^2-6x-8=0 I need all of the steps. Thanks

    asked on May 24, 2011
  52. Social Studies Essay Thesis

    Well, I'm doing a report on William Cockerill and I need a thesis statement that answers this historical question: What was the importance of William Cockerill and how did he impact future generations?

    asked on January 23, 2009
  53. books

    In what sense is Oedipus, through a king, also an "everyman" figure? How might the play of 'Oedipus Rex' be said to explore something fundamental about the limitations involved in being human?

    asked on October 4, 2008
  54. Physics

    As a traffic light turns green, a waiting car starts with a constant acceleration of 6.0 m/second squared. At the instant the car begins to accelerate, a truck with the constant velocity of 21 m/ second squared passes in the next lane. HINT:Set the 2

    asked on September 17, 2008
  55. Probability

    Maria handed in her final data management project last week. The class mean was 83% with a standard deviation of 8. If Maria’s mark produced a z-score of 1.09, what was her grade?

    asked on June 24, 2020
  56. algebra

    A bush cricket jumps from the ground into the air with an initial vertical velocity of 4 feet per second. Write an equation that gives the cricket’s height (in feet) as a function of the time (in seconds) since it left the ground. After how many seconds

    asked on April 20, 2019
  57. social studies

    1. Drag and drop the events to arrange them from the event that occured first to the event that occured last. 3.Colonial leaders sign the Declaration of Independence. 2.British soldiers and American colonists clash in Massachusetts. 1.The members of the

    asked on August 29, 2018
  58. algebra

    A new cruise ship line has just launched 3 new​ ships: the Pacific​ Paradise, the Caribbean​ Paradise, and the Mediterranean Paradise. The Caribbean Paradise has 19 more deluxe staterooms than the Pacific Paradise. The Mediterranean Paradise has 28

    asked on May 27, 2018
  59. College Chemistry

    For the reaction that occurs in the voltaic cell Fe(s)|Fe2+(aq)||Cr3+(aq),Cr2+(aq)|Pt(s) use data from Appendix D in the textbook to answer the following questions: a)Determine the equation for the cell reaction b)Determine E0 cell c)Determine ΔG0

    asked on May 17, 2015
  60. Statistics

    A research worker wishes to estimate the mean of a population by using sufficiently large sample. At the confidence level of 99%,the sample mean will be within 35% of the standard deviation. How large a sample should be taken?

    asked on June 11, 2014
  61. Physical Science

    Which of the following statements about ice melting is true? A. Energy flows from the ice to its surroundings. B. Water molecules move from their fixed position. C. Water molecules lose energy. D. The temperature of the ice increases as it melts. I think

    asked on August 27, 2013
  62. Pyhsical Science

    What is a system of knowledge and the methods used to find that knowledge? A. science B. technology C. measurement D. curiosity I think it's D.

    asked on August 27, 2013
  63. physics

    A 2.7 kg ball strikes a wall with a velocity of 7.8 m/s to the left. The ball bounces off with a velocity of 6.6 m/s to the right. If the ball is in contact with the wall for 0.19 s, what is the constant force exerted on the ball by the wall?

    asked on November 8, 2012
  64. Calculus

    I'm having trouble reversing the order of integration of ∫∫dxdy from a=0 to b=2(3)^(1/2) for x and c=y^(2/6) to d=(16-y^2)^(1/2) for y. I graphed the region of integration and that still doesn't really help me. i got approximately 7.9 for the

    asked on March 21, 2012
  65. history

    Quick strikes and movements during the darkness were used by: a. Francis marrion b. Peter francisco c. Crispus Attucks d. Caeser Bacon I think its b, not sure

    asked on December 6, 2011
  66. history

    The prussian soldier who helped train Continental soldiers was a. Marquis de Lafayette b. Baron Friedrich von Steuben c. George Rogers Clark d. Thaddeus Kosciuszko guess is B but not sure

    asked on December 6, 2011
  67. history

    The attack on fort Ticonderoga gave the colonists valuable a. ammunition b. prisoners of war c. intelligence information d. british war maps I believe its c but not so sure

    asked on December 6, 2011
  68. Algebra 2

    1. Simplify: sqrt6(sqrt2/2+sqrt3)-sqrt8 2. Simplify: sqrt(72x^3)-5x sqrt(2x) 3. Simplify: (2sqrt6-sqrt3)^2 4. Simplify: 6/3+2sqrt3 5. Solve: 2-y=sqrt(y+4) I need all of the steps. Thanks

    asked on May 24, 2011
  69. Math

    A ship in calm seas steamed 13 km in one direction, turned and steamed 13 km in another direction, and then returned 12 km back to its original position. The captain then plotted the ship’s course on a nautical chart. She asked her first officer to look

    asked on March 22, 2011
  70. algebra 1

    An item costs c dollars and 6% sales tax is charged The total cost including sales tax is given by the expression 1.06c you are buying a skateboard that cost $75 what is the cost of the skateboard

    asked on August 23, 2010
  71. 6th grade science (physics)

    explain and describe Newton's 1st law and as it applies to forces, balanced forces and unbalanced forces

    asked on April 18, 2010
  72. 6th grade science (physics)

    explain Newton's 1st law in relation to forces, balanced forces and unbalanced forces

    asked on April 18, 2010
  73. math

    An arch is in the form of a semi-ellipse, with its major axis as the span. If the span is 80 feet and the height is 30 feet write the standard equation.

    asked on March 24, 2010
  74. Math

    Use a counter example to show that cos(x+y)= cosx +cosy is not an identity

    asked on November 24, 2009
  75. fiance

    You want to create a $75,000 portfolio comprised of two stocks plus a risk-free security. Stock A has an expected return of 13.6 percent and stock B has an expected return of 11.4 percent. You want to own $30,000 of stock B. The risk-free rate is 4 percent

    asked on October 26, 2009
  76. Algebra

    Find all real values of x such that f(x) = 0 f(x) = 3 + 1 x – 2

    asked on October 16, 2009
  77. Physics

    A research balloon of total mass 445 kg is descending vertically with a downward acceleration of 1.3 m/s2. How much ballast must be thrown from the car to give the balloon an upward acceleration equal to 1.5 m/s2, presuming that the upward lift of the

    asked on September 28, 2009
  78. Science - Chemistry

    Balance the following chemical equation. Al + 02 -> Al2O3

    asked on November 2, 2008
  79. Probability

    Current engineering graduates earn a mean starting salary of $62 000 in Canada, with a standard deviation of $2500. Assuming that the salaries are normally distributed, what is the probability that a graduate will find a job with a starting salary of more

    asked on June 24, 2020
  80. Math

    Out if 56 coins, 18 are rare. If you select 10 of the coins, what us the probability that all of them are rare ? P(picking rare coin) = 18/56 = 0.3214 q= 1-p = 1-0.3214= 0.6786 , number of trials = 10 a) All rare coins: ncr= 10c10= n!/(r!*(n-r) =

    asked on May 16, 2020
  81. English

    Read the paragraphs from “Let’s give up on the Constitution” by Louis Michael Seidman. The deep-seated fear that such disobedience would unravel our social fabric is mere superstition. As we have seen, the country has successfully survived numerous

    asked on June 14, 2019
  82. algebra

    A recent survey of 300 television owners compared their television viewing habits before and after getting a DVR recording device. The circle graph to the right shows the data from the survey. Find the total number of people who say they watch less

    asked on May 28, 2018
  83. Chemistry

    CaCl2 reacts with AgNO3 in aqueous solutions to produce a precipitate of AgCl that can be filtered and weighed. The balanced equation for the reaction is: CaCl2 (aq) + 2 AgNO3 (aq) → 2 AgCl (s) + Ca(NO3)2 (aq)

    asked on October 10, 2017
  84. Math

    7. The value of a computer has a decay factor of 0.85 per year. After 2 years, the computer is worth $1445. What was the original value of the computer?

    asked on October 4, 2017
  85. Fluid Mechanics

    A hot air balloon carries a load of 1000 N including its own weight. The balloon is 10 m in diameter. Estimate the average air temp of the air inside the balloon if the air outside is 20 is 20 deg C.

    asked on March 19, 2017
  86. Chemistry

    How much energy (in kilojoules) is released when 29.0 g of ethanol vapor at 88.0 ∘C is cooled to -10.0 ∘C? Express your answer to two significant figures. q = ______________ kJ Ethanol has mp = -114.5 ∘C, bp = 78.4 ∘C, ΔHvap = 38.56 kJ/mol and

    asked on January 26, 2017
  87. AP Physics 2

    Identical point charges of +3.3 µC are fixed to three of the four corners of a square. What is the magnitude |q| of the negative point charge that must be fixed to the fourth corner, so that the charge at the diagonally opposite corner experiences a net

    asked on October 25, 2016
  88. Math Physics Torque Equilibrium

    A uniform meterstick pivoted at its center has a 100 g mass suspended at the 21.0 cm position. At what position should a 95.0 g mass be suspended to put the system in equilibrium? What mass would have to be suspended at the 80.0 cm position for the system

    asked on October 22, 2016
  89. Math

    A ball is thrown striaght up from a height of 3 ft with an initial velocity of 40 feet per second. How high will the ball go? Assume that the only force acting on the ball is gravity where the acceleration due to gravity is -32 feet per second per second.

    asked on March 24, 2016
  90. Finance

    What is the amount of money created in the banking system due to an initial deposit of $1,000 if the required reserve is 5%? The banks are not holding any excess reserves.

    asked on January 14, 2016
  91. Finance

    Calculate the annualized rate of return on a 200-day commercial paper. This loan does not pay periodic interest; it is a discount security. The face value of the paper is $1 million and the current market value is $980,000.

    asked on January 14, 2016
  92. math

    He spent $48 on art supplies. The canvas for each of his paintings is an additional $2. He plans to sell his paintings for $10. Find the number of paintings (p) he will need to sell to break even.

    asked on October 4, 2015
  93. algebra

    An experiment consists of spinning a spinner. The odds in favor of the spinner landing on an even number are 3:7. What is the probability that the spinner will not land on an even number? Type your answer as a decimal.

    asked on September 24, 2015
  94. math

    F= 9/5-62+32

    asked on September 22, 2015
  95. physics

    The longest pass in NFL history is approximately 83.7 m. Ignoring the effects of air resistance, calculate what must have been the initial speed of the football.

    asked on September 23, 2014
  96. math

    A rowing team rowed an average of 17.2 miles per hour with the current and 10.4 miles per hour against the current. Determine the team's rowing speed in still water and the speed of the current I need help fast. anyone?

    asked on July 27, 2014
  97. Math

    An irrigation pump can pump 250 liters of water per minute. How many hours should the system work to water a rectangular field 75 m by 135 m to a depth of 3 cm?

    asked on November 17, 2013
  98. Spanish

    Tengo sed. ¿_____ un vaso de agua, por favor? A. Me trae B. Le traigo C. Me falta D. Quisiera I think it's A?

    asked on October 17, 2013
  99. Physics

    A light ray traveling through air strikes a smooth, flat slab of crown glass at an angle of 30 degrees to normal. Index of refraction for crown glass is 1.66. What is the angle of refraction?

    asked on April 22, 2013
  100. Physics 1

    A mass m1 = 4.9 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.7 kg which hangs freely from the string. When released, the hanging mass falls a distance d = 0.8 m.

    asked on April 5, 2013


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