Posts by frank

Total # Posts: 540

  1. algebra

    Solve the equation using the zero-product property. -9n(5n-5) a. -1/9, 1 b. 0,1***** c. -1/9,-1 d. 0,-1 Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2-6=x a. x=2,3 b. x=-2,3 ***** c. x=2,-3 d. x=-2,-3 How many real number ...
  2. math

    simplify (7)/(2a)*5/(a^2) a. 35/(2a^2); where a ? 0 b. 35/(2a^2) i know the answer is one of these two and not c or d, but im not sure if its a or b
  3. math

    i forgot to put it but d is my answer
  4. math

    divide. (12t^6 - 8t^8) ÷ (2t^3) a. 6t^3 - 8t^8 b. 12t^6 - 4t^5 c. 6t^2 - 8t^4 d. 6t^3 - 4t^5
  5. algebra

    parallel lines have ____ slopes. same?? perpendicular lines have ____ slopes. ??
  6. History

    Thank you.
  7. History

    n Spain, the desire for religious unity was pronounced and resulted in the Spanish Inquisition. From the 13th century through the end of the 15th century, Catholics persecuted and slaughtered thousands of people considered heretics, mostly Jews and Muslims. Many Jews and ...
  8. History

    Which option accurately describes how the philosophy of humanism impacted the Spanish Inquisition? A. Catholic and Protestant inquisitors combined forces using humanist philosophy as a backbone to justify persecuting Muslims. B. Humanist philosopher Desiderius Erasmus ...
  9. history

    Thank you.
  10. history

    I meant C?
  11. history

    Which option accurately describes Martin Luther’s influence on the Protestant church? A. Under Luther’s recommendation, Protestant clergy members were to be known as Imam, Sheik, or Mullah. B. Under Luther’s leadership, Catholic clergy members led the Counter-...
  12. World History

    Thank you!
  13. World History

    Which option most accurately explains the shift toward humanist thought on people’s self-perceptions during the Renaissance? A.People who embraced humanist thought practiced flagellantism (whipped themselves with a belt) to repent for their sins. B.People who embraced ...
  14. Writing - College

    Gosh, I was always bad at writing a personal response essay. Well, I will be honest, any type of college paper. What can I suggest you is to turn to the professional writing service. Sometimes I let the writers from Prime Writing edit what I have tried to compose. And I was ...
  15. Math

    A city park employee collected 600 cents in nickels, dimes, and quarters at the bottom of the wishing well. There were 10 nickels, and a combined total of 25 dimes and quarters. How many dimes and quarters were at the bottom of the well?
  16. Physics

    a) Why do you think our eyes fail to see object clearly at varous distances? b) (i) Explain how image of an object is formed in the human eye (ii) What are ciliary muscles? Explain the function of these muscles c) Discuss the similarities and differences between the lens ...
  17. Physics

    A 0.5kg ball dropped from a height of 2.4 m above the floor. if an impact with the floor it loses 3 joules of energy, how high will it bounce?
  18. ICD-10 coding

    A patient with known carcinoma of the pancreatic head is admitted with a Hgb of 9.1. She has been receiving Docetaxel chemotherapy and the physician diagnosed this new anemia as an adverse effect of the chemoterapy. The patient is treated with darbepoetin alpha and IV iron. ...
  19. math

    a lorry tank was 3/5 full of petrol , 21 liters was added and it is now 5/6 full. how many liters of petrol can the tank hold
  20. Math

    Three circles which touch each other externally with the center of the circles at A, B, C form a triangle with size of 9cm, 7cm, 6cm.calculate the radii of the circle
  21. AP Chem

    do I have to find Ksp using the .5M?
  22. AP Chem

    Write the overall net-ionic reaction that occurs when iron (ii) hydroxide (Fe(OH)2, Ksp = 7.9 x 10^-15) is dissolved in a 0.500 M sodium cyanide solution forming a complex ion. (Fe(CN)6^4-, Kf = 7.7 x 10^36) Determine the value of the equilibrium constant for the overall net-...
  23. social studies

    Which of these events during the Age of Exploration was a cause of the other three? A) warfare increased as European nations competed for land and power B) advances in learning and technology made long ocean voyages possible C) Europeans brought food, animals, and ideas from ...
  24. riddle

    New moon
  25. math

    How long will it take an 8% simple interest rate for $850 to amount to $1000?
  26. Math (Geometry)

    That is the question. We have to write that into a linear equation
  27. Math (Geometry)

    Linerar Equations Hourly rate of $8.00 an hour for a guaranteed 40 hours
  28. Chemistry

    Hi, wondering if anyone can help with the following problem: A solution of NH3 (kb=1.8x10^-5) has a ph of 11. what is the molar concentration of NAOH? I am unsure how to go about this however i have tried [10^-3][10^-11]/ 1.8x10^-5 with no success. Thanks for your help
  29. algebra

    The sum of three numbers is 82. One of the numbers is 9 more than one of the others. Represent the numbers in terms of one variable.
  30. math

    A chemist test involves measuring two independent quantities A and B, the expressing the results of the test as C such that C= 3A-0.5B. Give that A is normally distributed with mean 10 and standard deviation of 1, and B is also normally distributed with mean 34 and standard ...
  31. Maximal area and dimensions of a window

    Unfortunately it is not that easy. I tried. :D If you have a chance to look at the picture you will understand. :) Just replace the "(DOT)" in the link with actual dots ".".
  32. Maximal area and dimensions of a window

    Hey Jiskha, came across this problem in my maths homework and I can't seem to solve it. Can someone maybe help me out? A Norman window has the shape of a rectangle with a semi circle on top; diameter of the semicircle exactly matches the width of the rectangle. Find the ...
  33. math

    My Progress so far: P=4x+3y=2100 A=2xy A=2x(2100-4x/3) This way I was able to calculate x= 525/2 or 262.5 But I'm having a struggle rewriting the formula used in terms of y. Can somebody help?
  34. math

    Hi guys, I am really stuck with this problem, maybe somebody could help me out. A rancher has 2100 feet of fencing with which to construct adjacent, equally sized rectangular pens as shown in the figure above. What dimensions should these pens have to maximize the enclosed ...
  35. Finite math

    A bank account pays interest at 12% compounded monthly, and has a monthly fee of $10, deducted at the end of each month. If $13,000 is deposited on January 1, 2013, how much is in the account on January 1, 2016? I have done some question related to compound interest however ...
  36. Physics

    The density of copper is 9.8×10^3 and the density of gold is1.9×10^4. When the two wires of these two metals are held under the same tension the speed in the gold wire is found to be half of that of the copper. What is the ratio of the diameters of the two wires?
  37. C++

    // Program: name of program // Author: your name // Date Written: date you began writing the program /* Abstract: Brief description of the program */ Include in-line comments in the body of your program. You can convert temperature from degrees Celsius to degrees Fahrenheit by...
  38. Math

    Steve before you start asking why may I tell you that you completely did not understand the question this is the cross product between two vectors. x is not a variable it is a symbol of operation. So try again, you cannot just distribute.
  39. Math

    This is a cross product problem: Given uxv=<2,-3,0> find (u-5v)x(u+4v) I appreciate your help Thank you!
  40. Math

    is 3 A and is 4 the first and 3rd one and is 1 d
  41. Math

    1. what is the solution of 87 + (-396)? A 183** B -183 C 9 D -9 2. Evaluate: -12 x 3 =? A 36 B -36** C 4 D -4 3. Evaluate: -20 ÷ -10 =? A 200 B -200 C 2 D -2*** 4. Select all the problems that have a solution that is negative. -8 + 10 = ? 8 x (-2) +? -4 ÷ (-2...
  42. Physics 11

    A mass of 10 kg, initially at rest on a horizontal frictionless surface, is acted upon by a horizontal force of 25 N. The speed of the mass after it has moved 5.0 m is: . a)  5.0 m/s 
 . b)  10 m/s 
 . c)  15m/s 
 . d)  125 m/s 
 . e...
  43. Econ

    Please help me and review my answers for my quiz. Let me know which ones you believe to be right and wrong. 1. When P = AR = MR = AC = MC: X economic profits are positive. economic profits are zero. economic profits are negative. normal profits are zero. normal profits are ...
  44. Economics

    The Southern Tree Trimming Corporation reported an accounting profit of $35,000 and a normal rate of return of 15 percent on capital and enterprise of $30,000. The opportunity cost of labor is $15,500. What is the economic profit? $110,500 X $19,500 $15,000 $5,000
  45. physics

    i need an answer urgently!please
  46. physics

    A spinal spring,loaded with a piece of metal,extends by 10.5cm in air.When the metal is fully submerged in water,the spring extends by 6.8cm.Calculate the relative density of the metal using Hooke's law
  47. Physics

    i don't know the answer guys..please help me out
  48. Math

    (4x^2 - 2x-1) - (-3x^3 + 2)
  49. Math

    Many has two boxes one contains 10 colored pencils 4 of witch are red and 6 which are green the other box onther box contains 7 markers and which 4 are red and 3 are blue what's the probability of of many choosing green green pencil and red marker
  50. statistics

  51. Biomechanics/Physics

    A 125 pound female is late for her biomechanics final and after arriving dashes up 40 steps each 15cm high in 1.65 seconds to take a seat and start the test. Hint: 1 lb = 4.47N How much work did she perform running up the steps?
  52. Government

    What are the three methods special interests groups might use to win favorable votes form legislators ?
  53. life orientation

    Six ways that the human rights violation influences individuals group and the broader south Africa community
  54. math

    Let a be -1/6 and let b be 1/2. Let x be the sum of the reciprocals of a and b, let y be the product of the reciprocals of a and b, and let z be twice the reciprocal of a divided by the reciprocal of b. Calculate x+y+z.
  55. math

    the answer is simply 23.
  56. math

    I took a test today that had 50 questions I needed 70 percent to pass I missed 10 questions what is my percent?
  57. History

    what was the Rhode Island connection with the cotton gin?
  58. Pre-Calculus

    An investor has $100,000 to invest in three types of bonds: short-term, intermediate-term, and long-term.How much should she invest in each type to satisfy the given conditions? Short-term bonds pay 4% annually, intermediate-term bonds pay 5%, and long-term bonds pay 6%. The ...
  59. Can you check an answer for me?

    Awesome, thanks Steve!
  60. Can you check an answer for me?

    There is a jar with 16 marbles. 4 are red, 7 are blue, and 5 are green. You select two marble at random. One marble is drawn and not replaced. Then a second marble is drawn. What is the probability of selecting a red marble and then another red marble? a. 3/64 b. 1/4 c. 1/20 d...
  61. Please help me on math, thanks!

    If no digit may be used more than once, how many 2-digit numbers can be formed using only the digits 5, 6, 3, and 2? 11 12 10 2
  62. History

    GOT IT, ITS c
  63. History

  64. History

  65. History

  66. History

    3.)Which of the following are possible results of the Monroe Doctrine? A.)Native Americans are forced off their lands in the West. B.)More Americans move westward seeking gold and riches. C.)The U.S. stops a Spanish ship from entering Florida waters. D.)European countries have...
  67. Physics

    An airplane has a velocity of 580 km/h relative to the moving air. At the same time, a wind blows northward with a speed of 92 km/h relative to earth. The airplane is moving in an easterly direction relative to earth. Find the speed of the airplane to relative to earth (answer...
  68. Math

    My math problem says seven tenths exceeds seven thousandths by what number. Do I subtract like this: 0.007 - 0.7
  69. MATH

    In a drawer Richard has 5 pairs of gloves. Each pair has a different color. On Day 1 Richard selects two individual gloves at random from the 10 gloves in the drawer. On Day 2 Richard selects 2 of the remaining 8 gloves at random and on Day 3 two of the remaining 6 gloves at ...
  70. Theory of interest

    An annuity last for 12 calendar years.At the end of each quarter,there is a payment.First quarter payment are $200,second quarter payments are $300,third quarter payments are $150 and fourth quarter payments are $400.Find the accumulated value of this annuity just after the ...
  71. Theory of interest

    An annuit last for 12 calendar years.Atthe end of each quarter,there isa payment.First quarter paynments are $200,second quarter payments are $300,third quarter payments are $150 and fourth quarter payments ate $400.Find the accumulated value of this annuity just after the ...
  72. Theory of interest

    An annuity last for 12 calendar years.At the end of each quarter,there is a payment.First quarter payments are $200,second quarter payments are $300,third quarter payments are$150 and fourth quarter payments are $400.Find the accumulated value of this annuity just after the ...
  73. chemistry

    a solution is known to contain Cl, NO3, NO2, and SO4 ions. which of these ions can be positively identified?
  74. chemistry

    why wouldn't HCl be a good acid to use to determine the solubility of a silver precipitate in acid soulution?
  75. Maths

    In an exam a student scored 60 marks out of a possible 80. What percentage is this
  76. Principles of Finance

    Warmack Machine Shop is considering a four-year project to improve its production efficiency. Buying a new machine press for $490,000 is estimated to result in $200,000 in annual pretax cost savings. The press falls in the MACRS five-year class, and it will have a salvage ...
  77. Principles of Finance

    Romo Enterprises needs someone to supply it with 121,000 cartons of machine screws per year to support its manufacturing needs over the next five years, and you’ve decided to bid on the contract. It will cost you $880,000 to install the equipment necessary to start ...
  78. Principles of Finance

    A five-year project has an initial fixed asset investment of $335,000, an initial NWC investment of $35,000, and an annual OCF of −$34,000. The fixed asset is fully depreciated over the life of the project and has no salvage value. If the required return is 10 percent, ...
  79. Chemistry

    How many nanoliters of a 1.00 molar solution would be required to react with 5.00 grams of barium nitrate?
  80. sciencec

  81. English

    My guess is as good as yours.
  82. Chemistry

    same answers confirmed by instructor
  83. Algebra 2

    Did I perform this operation correctly? (a^2-b^2)/(a^2-2*a*b+b^2) /(2*a^2+5*a*b+3*b^2)/(2*a+3*b) = 1/a-b
  84. Physics

    What effect does the normal force have on the coefficients of friction?
  85. Physics

    A storage battery has an emf of 6.3 volts and an internal resistance of 0.01 ohm. it is to be charged for 120 amperes.hours from a 30 volt emf source having a resistance of 0.08 ohm at the rate of 20 amperes. a. compute for the resistance needed b. what is the cost of ...
  86. chemistry

    Le Chatelier's principle lab
  87. chemistry

    What assumption did you make about the reaction of KMnO4 solution in those determinations where temp didn't change to allow k to be a constant?
  88. Ebhs,maths,siswati,english and business studies

    I am frank,i have 4 credits with me namely,maths,siswati,business studies and english,am asking what courses i can take
  89. History

    The answer is C.
  90. Life orientation

    Can you please help with this question which says'descrie a recent service delivery protest in your community or in the neibourhood.what are the problem that the community faced?.under the following topic:campaign with responsibility
  91. math

    At Frugal Foods a loaf of bread cost about $1 in 1980. In 2013, the loaf of bread cost $2.50. 1.A ratio is a comparison of two amounts by division. What is the ratio of the cost of a loaf of bread in 2013 to the cost in 1980? 2.50/1 2. Assuming the price of clothing increased ...
  92. chemistry

    A particular brand of toothpaste claims to contain 0.24 wt% sodium fluoride. What mass in grams of fluoride ion would be present in the average amount of toothpaste used to brush one's teeth, about two grams? Now this is a weight percent concentration question, I know that...
  93. chemistry

    As a research chimst, you are intrested in studying the extent and type of interactions in aqueous salt solution. As part of this study, you weight three samples of NaCl and dissolve each in 1.000kg H2O. You then measure the freezing temp. of each solution and compare these ...
  94. Calc

    A stone is thrown straight up from the edge of a roof, 625 feet above the ground, at a speed of 20 feet per second. A. Remembering that the acceleration due to gravity is -32 feet per second squared, how high is the stone 2 seconds later?
  95. PE

    I got 8/12
  96. math

    write an addition equation the equation must have a 1 a 2 a 3 digit added and use all of these digits 662-228-8000
  97. math/physics

    A 8 kg mass is attached to a spring hanging from the ceiling and allowed to come to rest. assume that the spring constant is 40 n/ m and a damping constant is 3 N/m. At t=0 and external force of 2 sin(2t+PI/4)N is applied to the system. determine amp, frequency and steady ...
  98. Math i need someone awesome to help! ASAP

    which measure correctly completes the statement 627 L = ? mL
  99. Geometry

    Write the equation of a circle given the following: Diameter measures 15 units and the center is at the intersection of y =x + 7 and y= 2x-5
  100. quadratic formula

    okay thank you
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