1. statistics - can someone please Help me

    I have tried for days to figure out how to work this problem. Please help show me how to find the answer. A particular radioactive isotope decays from 210 mg to 182.7 mg in 15 days. Find the half life of the isotope. I can not find any problem that is
  2. statistics

    In hypothesis testing, why are verbal problem statements converted to numerical problem statements? Why is it important to identify the parameter when converting a problem statement from verbal to numerical? Why do a null and alternative hypothesis have to
  3. stats

    Cushman and Wakefield accounting that the average annual rent for office space in Tampa was $17.63 per square foot. A real estate agent selected a random sample of 15 rental properties (offices) and found that mean rent was $18.72 per square foot and s=
  4. Math

    Challenge Write a 6 - digit number that has a 5 in the ten thousand place , a 3 in the thousands place ,a 4 in the tens place , and one digit that is 0.underline the 5,3,4,and the 0 in your number .is this the only number you could have written ? Expllain
  5. Algebra 2

    Please help me solve and find the excluded values for this problem. Also please show me the work for this problem I want to learn! h(x)=x^2-9/x^2-4x+3
  6. 6th grade english

    In a mystery story, the conflict is given a new name. What is it? Climax, Resolution, Problem, or All of the above? My choice is problem, am I correct?
  7. math

    Write a real world problem that you can solve by writing an equation . The answer to the problem must be 6
  8. 4th grade math

    Estimate. Then record your product using partial products. 4,247 x 5 (problem 1) (problem 2) 245 x 3
  9. Math

    Use the discriminant to determine how many real-number solutions the equation has. Problem 1 w2 - 2w + 2 = 0 A) 2 B) 1 C) 0 Problem 2 1 - 7a2 = -7a - 2 A) 2 B) 1 C) 0
  10. math

    write a real-world problem involving multiple steps, then solve our problem
  11. Algebra 2

    Please help me solve and find the excluded values for this problem. Also please show me the work for this problem I want to learn!F(h) = x^2-9/x^2-4x+3
  12. Maths

    Solve the problem - How many three digit numbers do not contain a five? Show evidence of solving the problem in a systematic way.
  13. Maths

    Solve the problem - How many three digit numbers do not contain a five? Show evidence of solving the problem in a systematic way.
  14. Algebra 2

    The absolute value of 4-x>14. Is this a disjunction or a conjuction?I know I already asked this question but I don't kow how to tell if this is an and problem or if it is an or problem.
  15. math

    In this problem the letters x and y are each one digit numbers. Compare x+y O 19? Do I put any number for x and y ? please help. Your answer was no but how do I do this problem?
  16. math

    In this problem the letters x and y are each one digit numbers. Compare x+y O 19? Do I put any number for x and y ? please help. Your answer was no but how do I do this problem? I'm sorry, I mean ,or =. Thank You for your help.
  17. Algebra 2 (Quadratic Equations)

    Is the point (-3, -2) a solution of the intersection of the following set of quadratic equations: Y < -X^2 X^2 + Y^2 < 16 I'm not sure how to actually work this problem out. Can anyone help me with this problem please.
  18. algebra

    problem 1 Life expectancy of man 73.7, in 2002 it was 77.5 years since 1995 E(t) ? t+? E (11)= ? problem 2 14m+5n-5m-7n
  19. unit rates

    Problem 1. 209 km. in 5 hours Problem 2. A soccer player scored 41 goals in 84 games
  20. finance

    can someone help me with this problem for this problem you will use 0.02/365 for your interest. You deposit $1000 at 2% for 20 years, compounded daily.
  21. math

    the problem is 500= 1 --- 1 --- X 2 Your presentation of the problem is unclear. Please repost. If you mean "X squared," that is indicated by "X^2." I hope this helps a little. Thanks for asking.
  22. 6 grade math

    I need help with these two problems if someone can explain the steps thank you Use a generic rectangle to find each product Problem 1: 3 and 1/6 × 2 and 1/2 Problem 2: 1 and 1/3 × 1 and 1/6
  23. College Algebra

    I need help factoring a problem and cant seem to get it right. The one I'm stumped on is 2x^2+7x+2. I have to compute as indicated and write final in the lowest terms. The whole problem is x^2-7x-18/x^2-6x-27*2x^2+7x+2/2x^2+5x+2
  24. math

    write a real world problem that you can solve by writing an equation.the answer to the problem must be 6.
  25. math

    Perform the indicated operations and write the answer in the form a + bi, where a and b are real numbers. Problem #1 (3+2i)^2 Problem #2 i^3 - i^2
  26. Physics/Math

    In the vector sum A + B = C , vector A has a magnitude of 13.1 m and is angled 49° counterclockwise from the +x direction, and vector C has a magnitude of 15.0 m and is angled 20.0° counterclockwise from the -x direction. What are (a) the magnitude and
  27. English

    1. What was their job? 2. They worked at a bakery. 3. He worked at a bakery, and she worked for a bank. 4. What were their jobs? 5. He worked at a bakery, and she worked for a bank. 6. They worked at a bakery. (Will you look at the questions and answers?
  28. Health-Care

    Discussion Questions 1. Have you used information technology in your educational program before? Was there any terminology related to use of technology that you found difficult to understand? While taking this course, were there any terms related to the
  29. Physics Help

    This is confusing me. I have to questions and I picked 2 answers but can someone tell me if I'm wrong and why? 1.)The distance an object travels per unit of time =a)Is its speed b)Is its velocity c)Is its acceleration 2.)The distance and direction an
  30. Statistic help

    Use the following table to answer the questions. (Give your answers correct to two decimal places.) x 1 1 3 3 5 5 7 7 9 9 y 3 2 6 1 3 3 3 2 5 3 (a) Find the equation of the line of best fit. y hat = + x (ii) Graph this equation on a scatter diagram. (Do
  31. math

    Use the following table to answer the questions. (Give your answers correct to two decimal places.) x 1 1 3 3 5 5 7 7 9 9 y 3 2 6 1 3 3 3 2 5 3 (a) Find the equation of the line of best fit. yhat = + x (ii) Graph this equation on a scatter diagram. (Do
  32. history

    I have a History project, and I have to ask a person questions emigrating from their country to America. Can someone give me websites that have questions to ask? Thank you for using the Jiskha Homework Help Forum. Just take the interrogative/question words
  33. Physical Education

    1. Aerobic activities can be done for an extended period of time and supply oxygen to your muscles. Such activities help develop _______________________. 2. You can change your _______________________ by exercising regularly and eating healthfully. 3. The
  34. English Ms Sue

    The last thing on my final is a paragraph I had to write, Using correct spelling and correct grammar, write a paragraph of five related sentences that discuss your experience in the English Grammar course. Using all four sentence types. Will you proof read
  35. math

    we are trying to help my son with his math and we are not sure how to do the problem and since his school has no books to send home to help us we came here the problem is 1/8x=1/4
  36. Algebra

    I have never had algebra and cannot figure out how to work through the problem below [(x + 1)² - (2x + 1)]1/2 + 2|x| - 6 = 0 Can you show me the steps for solving the problem?
  37. Algebra

    Solve and graph. I send this problem last night could someone please help me I have trouble with it. x+122 The solution is { x | x< or X > } please help me with this problem.
  38. Mat115

    This problem is in chapter 9 page 708, problem 58. It looks like it could be solved two ways. 16 div. by (-2)*(-4) --------------------- 2^ +4
  39. mathematics

    Need help with this math problem please. Work need to be show but I have no idea how to complete the problem. (-4)3 (the 3 is an exponent) Thanks for your help
  40. Statistics

    Problem 7 Refer again to the table in Problem 6. : 3.0 points Fill in the value of the missing entry.
  41. algebra homework

    I am having some problem with solving a problem that the teacher gave to us. I ahving been working on it, but I just can't seem to get it. I keep getting the answer 2(y-2)/y+2. 3/y-3/2y+4
  42. math116

    i am having a problem with this problem. it is week 2 checkpoint mat116 it says to solve using the principle of multiplication. -x=44
  43. Algebra

    For each equarion, write the equivalent equation that expresses y in terms of x (Problem A) 3x+5x-y=5y y= (Problem B) 3x(5-x)= x-y
  44. Mathematics

    I need to solve this problem in two diferent ways showing work. I have one way but I don't know what the other way could be the problem is 3 3/4 +5 1/3
  45. Statistics

    I'm having a problem with this problem. Please help. Thank you.. Find the probability that more than 13 people will read the morning newspaper..
  46. Math

    Ok so my problem is -3(3x+15)-(10+x)=35 After doing most of the problem I ended up getting -10x=105. I need to have a whole number as an answer but I can't understand what to do.
  47. algebra

    The problem is factoring completely 4xX^2-20x-24 4(X^2-5x-60 4(x-6)(x+1) 12x^2-75 3(X^2-25)=3(X-25)(x+3) Can someone check these problem for me please.
  48. math,help

    i am stuck with this problem: Problem #12 Solve by using the quadratic formula. 5x^2 + 5x = 3 i am at this step x = (-5 (+/-) sqrt (85))/(10) you are done!
  49. math

    use each of the digits 0 1 3 4 5 exactly once to write a decimal subtraction problem.the difference must be the same as one of the decimals in the problem
  50. Algebra 1

    I have to get this last problem done it's for my project here's the problem: solve by completing the square method x 2- 12x =-11
  51. Science

    why has poor water quality become a problem and how human activities have contributed to the problem.
  52. Math

    I need help with this problem: 6/v-1=6/(v-3) I tried working it out like this: >>>6/v-1=6/(v-3) >>>(6-v)/v= 6/(v-3) I cross multiplied to get: >>>3v+18-v^2= 6v >>> -3v+18-v^2=0 ^Here's where I became stuck. I would appreciate it if you would point out
  53. Math

    Question: Write a word problem using 7 groups. And then solve the problem Can you give an example?
  54. Math

    Help please on how to solve the following problem: If E,N,O,T, and W each represent a different integer, can you find more than one solution to this problem? Thanks in advance!
  55. Calculus

    We can find some of the solutions of sin x = 0.2 graphically by graphing y = sin x and y = 0.2 (I was able to figure this one out) Use the graph below to estimate some of the solutions. (Let −3π < x < 3π.) Enter your answers as a comma-separated list.
  56. CHEM

    Calculate the density of oxygen, , under each of the following conditions: STP 1.00atm and 25.0 degrees celsius Express your answers numerically in grams per liter. Enter the density at STP first and separate your answers by a comma.
  57. Physics

    A 120.0 volt motor draws a current of 7.60 A when running at normal speed. The resistance of the armature wire is 0.610. (a) Determine the back emf generated by the motor. 115.364 V (b) What is the current at the instant when the motor is just turned on
  58. math,help

    i am having difficulty with this problem can someone help me. Problem #1 Write in simplest form (48a^5b)/(12ab^2) this is what i get: 4a^4b^-1 Problem #2 how do i start it: subtract. Express your result in simplest form (12)/(z) minus (10)/(z) Your #1 is
  59. Please Help!!!!!!

    Decide whether the following problem can be solved using precalculus, or whether calculus is required. If the problem can be solved using precalculus, solve it. If the problem seems to require calculus, explain your reasoning and use a graphical or
  60. math

    can someone please help me? I am stuck on a problem it deals with inequalities but it is in a word problem which makes it worse for me, how would I solve this problem? Miguel's insurance company will replace his car if repair exceeds 80% of the car's
  61. surface and volume

    A glass vase weighs 0.12lb, how much does a similarly shaped vase of the same glass weigh if each dimension is 6 times as large? possible answers; 4.32lbs 25.92lbs 0.72lbs 155.52lbs These are the last problems I have and I can't figure them out can someone
  62. Math (Quadratics)

    3. Solve for x in 8x^2 + 2x - 4 = 0 I have tried factoring, taking out a GCF then factoring, completing the square, and got a bunch of wrong answers. I thought we were supposed to complete the square, so maybe I'm just doing that wrong. I'm not looking for
  63. Math

    can please check my answer: Q. 500 individuals tested a new biometric security system that will be used to verify that people attempting to enter a site are authorised to do so. 200 of the testers were authorised users and 300 were not. At one particular
  64. Pre-Calc

    I posted yesterday and didn't get a response so I'm hoping someone can check these today-Thank you they are polar coordinate questions--My answers are her I just need them checked- 1.Which of the folowing is another representation of (-3,pi)? (3,120degree)
  65. System ?

    Your teacher is giving you a test worth 100 points containing 40 questions there are 2-point and 3 point questions on the test how many each type are on the test ?
  66. kinetics

    a ball of mass 200 g is thrown vertically upwards with a velocity of 20ms-1 ignoring air resistance. a) calculate the kinetic energy of the ball as it is released b)calculate the maximum height reached by the ball c) state the velocity of the ball when it
  67. kinetics

    a ball of mass 200 g is thrown vertically upwards with a velocity of 20ms-1 ignoring air resistance. a) calculate the kinetic energy of the ball as it is released b)calculate the maximum height reached by the ball c) state the velocity of the ball when it
  68. English

    1. Why will they hold a party? 2. When will they hold a party? 3. Which party will they hold? 4. What kind of parth will they hold? 5. They will hold a parth for their teacher's party. [#5 is the answer to the questions from #1 to #4. Which questions are
  69. math 140

    I have two questions posted that has not been answered please help. The questions were posted on March 18 please help.
  70. math

    Weights of the vegetables in a field are normally distributed. From a sample Carl Cornfield determines the mean weight of a box of vegetables to be 180 oz. with a standard deviation of 8 oz. He wonders what percent of the vegetable boxes he has grouped for
  71. Algebra 1B

    This Question is in multiple sections. f(x)= -2x^2+2x+10 is the problem 1)What is the x coordinate of vertex in simplified fraction? 2)What is the y coordinate of vertex in simplified fraction? 3)What is the line of symmetry? 4)What is the maximum/minumum
  72. Math

    Dear Reader, Can you help me with my math problem on my homework please? There is nobody at my house who can help me yet. So when you get the chance can you help me with my problem? Thanks for reading. From, Portia1214
  73. Math help please

    I kinda need help with this 10.Write a real world problem that you can model with the two step equation 5x+7=10. Then solve the problem.
  74. character education

    What consideration should be a key factor when solving a problem? how other people will be affected who to ask for help where the problem goes once it is solved how it affects only you A
  75. 6th Grade Math

    Estimation division. Problem: 28,622/921 My estimated problem: 27,000/900 Is this right?? If not, please explain. Thanks!
  76. math

    my topic is all about sums and differences of a rational algebraic expression this is the problem 3a/ax+ay + 2a/ax+ay another problem is a/4a+1 + 2/4a^2-7a-2 another is 3/a-b + 4/a+2b please anyone else who can answer my assignment please HELP ME!
  77. Honors Algebra II

    I've been stuck on a problem with my homework for a couple of minutes now. We are doing Systems of Two Equations, using the substitution method. The problem is: 4y-6x+20=0 3=(18/5)x+(21/10)y
  78. Critical Thinking

    What forces of influence should be considered while identifying a problem through critical thinking? What methods can be used during problem formulation?
  79. math

    Write a real-world problem that you solve by writing an equation.The answer to the problem must be 6. 4 divided by 24=6
  80. Math

    I need help with this order of operations problem. also x in the problem is the multiplication symbol. 44-4x(5+3x2) I got 44-4x(11) 40x11=440 Am I correct?
  81. Calculus

    I want to know how to find the local linearization. So in this problem I'm doing, I'm given the f(x) equation and it says "about x = 0" I'm suppose to approximate value of f(0.3) Are there specific steps I need to take to go about this problem?
  82. calc

    y=ln(x+1) +ln(x-1) find dy/dx I have trouble with this problem since i'm not that familar with finding the derivative when they involve ln. Please show me how to solve this problem. I should have gotten 2x/(x^2-1)
  83. PHYSICS

    Identify/name at least 1 biological science problem and prepare on how procedure on how to solve such problem then recommend solutions.
  84. Algebra

    Create a real-life representation of the following multiplication problem. Explain what the result represents in the problem. 15(2/5)=6
  85. BIOLOGY

    Identify name at least one biological science problem and prepare a procedure on how to solve such problem then recommend solutions.
  86. business communication CO210

    Prepare a one-page description of your plans to solve the problem for one of the following research studies. Use the following headings for the problem:
  87. Biology

    Identify/ name at least 1 biological science problem and prepare a procedure on how to solve such problem then recommend solution.
  88. introductory algebra

    I had these problems on my test and for some reason got them wrong. Here are the problems: Solve: x-y=9 x+y=1 The test states that the answer is (5,-4) I've checked ,y work and used substitution to solve this and still get x=4, y=-5. The second problem is:
  89. IUPUI

    The prevalence of previously undetected diabetes in a population to be screened is approximately 1.5% and it is assumed that 10,000 persons will be screened. The screening test will measure blood serum sugar content. A value of 180 mg percent or higher is
  90. epidemiology

    The prevalence of previously undetected diabetes in a population to be screened is approximately 1.5% and it is assumed that 10,000 persons will be screened. The screening test will measure blood serum sugar content. A value of 180 mg percent or higher is
  91. Quadratic Equations

    The question is Is the point (-3, -2) a solution of the intersection of the following set of quadratic equations: Y < -X^2 X^2 + Y^2 < 16 I guess I am somewhat confused by the way it's written. Would I be graphing this to find out? I'm so confused with
  92. Algebra

    I am trying to solve the sytems of equations using the elimination method. 2x+4y=10 -3x+3y=-6 I tied multiplying the first equation by 2 and the second by 4. Then I tried multiplying the first equation by -3 and the secondy by 3. The book says the answers
  93. english 101

    which word is wrong here? The physician overhead the insurance agent discussing the patient details of a client's medical condition with a personnel friend in the hospital cafeteria. overhead-details-a client's-a personnel-in the- my answer is personnel-
  94. Physics

    You stand on a bathroom scale that rests on the floor of an elevator. Standing on the scale compresses internal springs and activates a dial that indicates your weight in newtons. When the elevator is at rest, the scale reads 600 N. Then the elevator
  95. Complete the Square

    My teacher wants me to make 5 hard complete the square questions and solve them in front of her to get a %5 bonus mark. Can anyone give me 5 really hard complete the square questions?
  96. Algebra

    1) Is the equation: 28 - 4√2 = 24√2 True? Explain why or why not? 2) Is this statement √a + √b = √(a +b) True? Explain why or why not? 3) What is the index of a radical? When working with radicals, can the radicand be negative when the index is
  97. Math

    Which statement(s) is/are true?Select one of the options below as your answer:A. A 25° angle is congruent to a 25° angle.B. Two intersecting lines form two pairs of congruent angles.C. It is possible for congruent angles to add up to 90°.D. All of the
  98. math

    How many tokens of “the“ did Adam produce at stage 1?______22_______ How many tokens, in general, did Adam produce at stage 1? _7437__________ What percentage of Adam's tokens did “the“ make up at stage 1? Hi, i figured out how to calculate the
  99. math,algebra

    Can someone set this up in equations so i can solve them i would greatly appreciate it. THanks. Problem #3 The base of a ladder is 14 feet away from the wall. The top of the ladder is 17 feet from the floor. Find the length of the ladder to the nearest
  100. To Alex -- French

    I deleted your post because you included your email address. We don't allow such personal information to be posted here. Here's your message: "I am currently doing French 20 through VHL Central can someone please help me with Lesson 2B-Enregistrez as I can