1. SAT math

    How many solutions does this have: x^2 + 2x + 1 = 0 I put one. 9x^2 + 49 = 42x I put one. x^2 + 4x + 1 = 0 I put two.
  2. maths too hard

    1a)write down and simplify all the terms of the binomial expansion (1-x)6. (b) use your expansion to evaluate 0.997^6 correct to 4d.p (c) when 0.997^6 was computed by a student, his result was 0.9817. Find the percentage error correct to 3d.p..... Plz help
  3. calculus

    as i drive to the city, let f(t) be the total distance i have traveled t hours after starting my trip. i left my house and began my trip at exactly 12 noon. just a fraction of a second before 2 pm, i cam across a construction zone, and so i hit the brakes.
  4. Statistics

    This is my first stats class and I don't know how to do this, could you please help me? Thank you. You are asked to determine the typical number of sales of a certain product at the store you work for. A sample of 50 days over the last quarter shows an
  5. Math

    put in order this fractions 9/9, 2/3, 5/6, 4/12, 0/2 from the smallest to the largest? I don't know how?
  6. math

  7. Algebra II

    how do you get the x inercept of a equation like 7/(4x^2-21x-49)? I know you put it in y=mx+b but i don't know how to solve for x in this
  8. technology

    What is the proper way to put the transparency in the overhead projector? Help me please, I don't know how.

    Evaluate the expressions: 1. -8x when x=6 2. 3xsquared-5x when x=-2 3. -4((the absolute value sign) y-12 (the absolute value sign))when y=5
  10. Chemistry

    For half reactions, is the equilibrium sign used? example: Zn --->Zn^2+ + 2e^- (just arrow) OR Zn <---> Zn^2+ + 2e^- (equilibrium sign)
  11. math ASAP Please!!!

    Please Help Me!! God bless you!! If m angle sign 1 = 53°, what is m angle sign 4?
  12. Math

    1. If the product of 5 and the sum of 10 and a certain number is equal to 15, what is the number? 2. The sum of two consecutive counting numbers divided by their positive difference is 9. Find the larger numbers.
  13. Math

    A catcher's and a pitcher's uniform numbers are consecutive integers whose product is 756. If the catcher's was the smaller number, determine the uniform number of each player.
  14. 5 stand for

    what is the number 5 stand for The number five is a numerical sequence which follows four and precedes six. Other than that, you need to clarify the question. Since this is not my area of expertise, I searched Google under the key words "five meaning" to
  15. Math

    Packaging Tangerines The produce manager at the grocery store had 410 tangerines. He put some of them into 15 cartons containing 12 tangerines each. He then put the rest into 14 cartons, each containing the same number of tangerines. How many tangerines
  16. English

    The MACARONI AND CHEESE ____ ready to eat now. A. is****************************** B. are C. were Neither the CAR nor our COUSINS (can, could) be found. A. can B. could************************** Which of these words has the same denotative meaning as, but
  17. math

    using digit 1,2,3,4 and 5 to form a 2-digit and a 3 digit number so that the product is the least product possible. using each digit only once
  18. Us History

    hi ms.sue i have a question that i need help .thanks for all the help that you had given me =) i really appreciate it. so i need help in this ,i don't undesrtand it . what would be the probable result of the national government sending military force
  19. Math

    The charges for hiring a car from three different companies, based on the number of days for which a car is hired and/or number of kilometres for which the car is driven are as follows: Company A charges $660 per day Company B charges 48 cents on per
  20. Math

    1. A bag contains 9 tiles numbered 1 to 9. P(4) = (1 point) experimental; the result is found by repeating an experiment. experimental; the result is based on the number of possible outcomes. theoretical; the result is found by repeating an experiment.
  21. Math

    Is rotating the point L(4,4) 90° ABOUT THE ORIGIN THE SAME AS REFLECTING THE POINT OVER THE X-AXIS? EXPLAIN. I get that the rule is counter clockwise and you rotate x and y and then change the value of the 1st sign.. becomes -y,x but i don't know how to
  22. physics

    A bar made of a particular metallic alloy has a length of 10 cm at a temperature of 24 oC and a length of 10.015 cm at the boiling point of water. (a) If a second bar made of the same material were 10 m at 24 oC, how much longer would this bar be at the
  23. physics help

    A bar made of a particular metallic alloy has a length of 10 cm at a temperature of 24 oC and a length of 10.015 cm at the boiling point of water. (a) If a second bar made of the same material were 10 m at 24 oC, how much longer would this bar be at the
  24. math

    One number is eight more than twice another. If their sum is decreased by nine, the result is fourteen. Find the numbers.
  25. Fractions

    How many 2/5's are in one yeilds a result of 2/5 x 5/2 = 1 use the answer from above, to find the number of 2/5's in 2. What is the proper way of writing this. Thanks
  26. college algebra

    x y z rhs 1 1 2 3 2 1 6 3 0 3 4 13 multiply some number by r2 and add result to r3(2) have to get o in r3 (1)- steps:------------------
  27. Algebra

    Write an equation and solve. If 6 is added to twice a number,the result is 20.What are the numbers?
  28. mathematics

    one number is one less than two times another. if their sum is increased by two, the result is 13. find the numbers .
  29. Algebra 2

    Can someone check my work please? I tried my best on all the problems but I still don't understand excluded values and how to simplify rational expressions. Thank you in advance for any help! 1)6x^5/2x^3 6/2 = 3 3x^5/x^3 x^5-x^3 = x^2 3x^2/1 2) (2x+4)+(x^2
  30. Algebra

    I need to simplify this. (2^-1 . 7^-4)^-2 I thought that 2 was suppose to be multiplied with the -1, but that doesn't seem to make sense so I am confused. I know that PEDMAS needs to be used, just don't know how to apply it. Any help is appreciated!
  31. Algebra

    I need some help with this question I really don't understand it and some help going through this problem would be really appreciated :) Use the fact that a/b/c/d=a/b / c/d to simplify each rational expression. State any restrictions on the variables.
  32. math

    an ________ is a number sentences that uses an equal sign to show that 2 amounts are equal.
  33. Math

    For inequality number lines would a less than or = to sign mean that that it would be a closed dot or open dot?
  34. Algebra

    The temperature fell by 9°F today right a sign number to represent this temperature change
  35. Can someone help me please I've tired this problem

    A certain virus infects one in every 300 people. A test used to detect the virus in a person is positive 80% of the time if the person has the virus and 5% of the time if the person does not have the virus. (This 5% result is called a false positive.) Let
  36. HELP!

    How many times do I have to tell you the answer is d. Goodness. http://www.jiskha.com/display.cgi?id=1168934037 all you had to do was add two numbers given, and double it, and put the neg sign in front. I have no idea what the answer to this problem is,
  37. Math

    The numbers 1-10 are placed on cards, and the cards are put in a hat. If two cards are drawn, in order, without replacement, what is the probability that a. both are composite? b. one number is even and the other is odd? c. one number is even and the other
  38. physics

    A mass is dropped from a height of 30m, and at the same time from ground level (and directly beneath the dropped mass), and another mass is thrown straight up with a speed of 15 m/s. a) How far apart are the two masses after 0.5 s? b) Will the massses ever
  39. algebra 2

    What is the smallest value of x for which the radical expression (radical sign)2x-10 is a real number
  40. math

    a two digit number * 7 is multipule by three digit number * * 3 the digit in the place are not neccessararliy the same which of the following can be the product of the two numbers ?
  41. physics

    A block of ice at 0°C whose mass initially is m = 48.4 kg slides along a horizontal surface, starting at a speed vo = 4.91 m/s and finally coming to rest after traveling a distance d = 12.28 m. Compute the mass of ice melted as a result of the friction
  42. Linear algebra

    Let L1 be the line passing through the point P1=(−1, −1, 8) with direction vector →d1=[1, 0, −3], and let L2 be the line passing through the point P2=(7, −11, 14) with direction vector →d2=[1, 2, −3]. Find the shortest distance d between
  43. Math

    Packaging Tangerines The produce manager at the grocery store had 410 tangerines. He put some of them into 15 cartons containing 12 tangerines each. He then put the rest into 14 cartons, each containing the same number of tangerines. How many tangerines
  44. English

    1. Our school play club will put on a play Nasrredin and the Fish. 2. Our school play club will perform a play Nasrredin and the Fish. 3. Our school play club will resent a play Nasrredin and the Fish. (Are they the same? Does 'put on' mean 'perform? Why
  45. chemistry

    what is the total number of electrons shared in a double covalent bond between two atoms, and why? four. One covalent bond is two electrons, a double convalent is twice that. why wouldnt it be 8? Because 2*2=4. Reread Bob Pursley's answer. Two electrons is
  46. Math

    How do I graph inequality on a number line? How do I work the problem out? x < 8 (there is a little line under the greater than sign)
  47. Art

    Ms. Sue, Writeacher I urgently need you to check this paragraph and suggest where I should look for more specific details on this topic. 1) The information appearing on cosmetics must be present directly on the container of the cosmetic and, if present, on
  48. Chem

    How do you figure out the Noble Gas Configuration? Also, why do you not put in the "p" level and when do you( if you even do) put it in? You need to be more specific about your question. Elements that lose electrons (Na, Ca, Al, etc) gain the noble gas
  49. Macroeconomics

    working on homework & stuck on these three questions. Someone please check if I answered these correctly; Thank you! 1. In the event of excess supply in the coffee market __________. A. the price of coffee will increase B. the price of coffee will decrease
  50. chemistry

    3.The solubility product for silver (I) chloride is 1.6x10^-10 while that for sliver (I) iodide is 8.5x10^-17. Suppose 5g of AgCl is put in a liter of 0.1M sodium iodide solution. If a solid is eventually isolated, what is it, and how did it form?
  51. Variable

    SOLVING EQUATIONS WITH THE VARIABLE ON BOTH SIDES Solve the equation. Then check your solution. 4x-9 = 7x+12 Just remember that one can add, subtract, multiply, divide, etc but whatever is done to one side must be done to the other side of an equation. 4x
  52. English

    1. The hospital is for certain people. 2. He has a certain problem. 3. He has a sure problem. 4. He is certain that the boy is diligent. -------------------------- Are they all grammatical? The meaning of 'certain' seems to be different. Does #2 mean #3?
  53. Matyh

    Victor Malaba has a net income of $1,240 per month. If he spends $150 on food, $244 on a car payment, $300 on rent, and $50 on savings, what percent of his net income can he spend on other things? A. 43 percent B. 300 percent C. 40 percent D. 64 percent
  54. Check over Economics HW

    I just need help reviewing my HW answers...they are all true/false questions..THANKS!!! 1. A principal-agent problem occurs when managerial decisions are inconsistent with the firm’s revenue maximizing objective. False 2. A firm making less than a normal

    According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. Compute the probability that two randomly selected peanut M&M’s are both blue.
  56. Algerbra

    The athletic department just received a shipment of footballs and basketballs. You don’t know how many there are, and don’t feel like counting. Here’s what you do know: each football costs 12 dollars, each basketball costs 15 dollars, and the credit
  57. Math

    I need help simplifying radicals. The problem in priticular is the square root of 60x^2 √60x^2 can be simplified this way: √(4 * 15 * x^2) Can you see what to take out from under the square root sign? √4 = 2 and √x^2 = x Therefore,
  58. Really Need Help Please

    A certain virus infects one in every 200 people. A test used to detect the virus in a person is positive 90% of the time if the person has the virus and 10% of the time if the person does not have the virus. (This 10% result is called a false positive.)
  59. Literature

    I need help figuring out the exposition, complications, climax, and resolution of The Miracle Worker. I think some complications were when the Kellers weren't letting Annie do her job because they were pitying Helen too much? Or Helen wasn't cooperating? I
  60. bio...

    The main result of aerobic respiration is the 1 conversion of radiant energy into chemical energy 2 production of lactic acid as an end product 3 storage of energy in a polysaccharide 4 production of ATP from the breakdown of glucose
  61. finance

    . Suppose you just inherited an gold mine. This gold mine is believed to have three years worth of gold deposit. Here is how much income this gold mine is projected to bring you each year for the next three years: Year 1: $49,000,000 Year 2: $61,000,000
  62. Math/Algebra

    if you add one number divisible by n and one number not divisble by n will the result be divisible by n? and.. if you add two numbers not divisible by n will the reult be dvisible by n? explain.
  63. Math

    If a number of 2 digits is divided by the sum of its digits, the quotient is 2 and the remainder is 2. If it's multiplied by the sum of its digits, the result is 112. Find the number.
  64. 8th grade

    can u help me to find the product of -4x^2 and x^3 + 2x^2 - 5x + 3 and the solution to the equation of x^2 + 30x = 1000...I came up with -20 and 50 but i don't think it is right..can u help also can you help me to do the factorization of 6x^2 - 2x -
  65. Calculus

    Find the derivative of y=xe^-x^2. Is the x being multiplied by (e^-x^2)? Product rule? I don't understand how to approach this problem.
  66. chemistry

    If the following thiol containing compound is oxidized, what product will be obtained? CH3-SH --> Can someone please help me with this? The only examples my book has are with two S, so I don't know how to do it with just one S. Thank you!!
  67. calculus

    Which of the following is a step in evaluating ç(integer sign) cos^2 5x dx A.ç(integer sign) 1 + cos 10x / 2 dx B.ç(integer sign) 1 - cos 10x / 2 dx C.ç(integer sign) 1 + cos 10x / 20 dx D.ç(integer sign) 1 - cos 10x / 20 dx A <<
  68. Computer Science

    w w w (dot)cs(dot)umass(dot)edu(slash)~verts(slash)coins105(slash)quizzes(slash)images(slash)hw10(dot)gif Using the constants in cells A2:A9, create formulae for cells A12:A15 (surrounded by a dark line) to compute the corresponding "derived" physical
  69. Calculus

    Solve these indefinite and definite integrals. [integration sign] 4j-5j^3 dj I got 2j^2 - 5/4j^4... is this my final answer? If j is the variable, for the indefinite integral you have to add a constant. For the definite integral, you have to put in the
  70. Chemistry

    Could you tell me how to balance equations like these? The numbers with * before them mean that they're subscripts. You can not change the subscripts, but you may put numbers in the blank spaces. The arrow is like an equals sign. examples- ___C*5H*9O+
  71. Nat Sci

    why when the granite decompose it converts to clay? and what is the simplest meaning of B horizon. i don't fully understand the things i've read about b horizon on net. please help me
  72. calculus

    The velocity of a skateboard is v(t) = t^2 - 4 t + 3 m/s when moving in a straight line. A. Find the the change in displacement of the skateboard between 4 seconds and 6 seconds. (Note this may or may not be negative, meaning it goes in the opposite
  73. Math

    If the sides of a triangle are tripled, by what number would the area be multiplied? I Don't understand the question so I don't know how to show the work.
  74. Math

    Of 20 scores, 19 are less than or equal to 10. Find the percentile rank of 10. They don't give you the exact number of tens so i don't really know how to do this? Could someone please explain?
  75. math

    If you add two-thirds of a number to the number itself, you get 40. What is the number? I do not know how to set it up? 2/3n + n = 40 Solve for n. I don't know but thak you sooooooooooo much for helping me on my mixed #'s!!!!!!!! Good Luck!!!!!! I don't
  76. math

    The product of 2 consecutive is 48,find the number.
  77. Math

    What is the product of -1 3/8 and 2 4/5 expressed as a mixed number?
  78. math

    write all the whole number multiplication that have a product of 25
  79. math

    Estimating the product of a decimal and a whole number what is 8.02 x 70
  80. math

    The square root of the product of 4 and a number is 26
  81. Math

    Write 84 as a product of a prime number
  82. math

    the product of twenty-five and the sum of a number and four
  83. Math Help

    Which shows the product of a number n and 12? 1. n - 12 2. n/12 3. 12n *** 4. n + 12
  84. prealgebra

    translate; the quotient of 41 and the product of a number and 35
  85. maths

    3 4 7 8 9 find the product of the smallest number
  86. math

    Product of two number is 16 .one of them 4 . Find oter
  87. algebra

    Ten less than the product of three and a number x. my answer is 10-3x
  88. math

    The sum of one and the product of four and a number xxx.
  89. math

    how can i find the product of this number 3 x 16 by breaking it ?
  90. math

    the sum of one and the product of one and number x how would you wite this
  91. E.L.A

    Which expression best represents the views a fatalist would have? a. “whatever will be , will be”*** b. “the best is yet to come” c. “we are still masters of our fate” d. “you don’t know what you have until it’s gone” In which of these
  92. spanish

    Write a letter in Spanish in which you describe something that happened to you which required consulting a nurse, doctor or dentist. Include in your description: why you needed a particular medical service where you went to get it and what happened when
  93. Computer Programming

    I already posted this question but I gave it a try I'm not sure if I'm on the right track: Make a util class with three methods. First method's name is add, that returns the result by adding two numbers. Second method's name is multiply, that returns the
  94. Check Answers (Math)

    1. Which binomial is a factor of x^3-3x^2-28x? A. x-4 B.x^2-4 C.x-7*** x^2-7 2. A company's profit is described by the equation. P(x)=-5^2+300x+15,000. Where x is the price in dollars that the company charges for its product. What should the company charge
  95. Physics

    "An athlete whirls a 3.7kg shot-put in a horizontal circle with a radius of 0.90m. If the period of rotation is 0.30s, how far would the shot-put travel horizontally if it is released 1.2m above the level ground?" There were two other parts to the question
  96. physics

    You're quietly sitting by a street one day, enjoying the sun, when you notice a speeding car traveling at 20 m/s down the street. The driver notices that there's a stop sign in the street and hits the brakes 40 m before the stop sign, coming to a stop
  97. Science (Chemistry)

    The question: Balance each of the following skeletal equations by using oxidation and reduction half reactions. All the reactions take place in acidic solution. Identify the oxidizing agent and reducing agent in each reaction. a) Cl[sub]2[/sub] (g) +
  98. Chemistry

    My question is basically to find out what these reactants yield: CuCl2(aq) + NH3(aq) --> ? my best guess here is... CuCl2(aq) + 6NH3(aq)-->[Cu(NH3)4(H2O)2]2+ + N2(g) + 2HCl Im pretty sure about the [Cu(NH3)4(H2O)2]+2 part but not sure about the rest.
  99. Algebra 2 ..

    Please explain on how to do each of these! *Let (x) be defined for all positive integer values of xas the product of all even factors of 4x. For example, (3)=12x6x4x2=576. What is the value of (5)? Someone says that it is f(5)= 20x10x2x4=1600 I DO NOT GET
  100. Algebra

    The costs of doing business for a company can be found by adding fixed costs, such as rent, insurance, and wages, and variable costs, which are the costs to purchase the product you are selling. The portion of the company’s fixed costs allotted to this