1. math

    when you add a positive and negitive integer and the one with the greater magnatude is negetive, what is the sign of the sum?
  2. Algebra

    I need some help! Determine whether infinite geometric series has a finite sum. If so, find the limiting value. 112+56+28+....
  3. pre - CALCULUS

    Find the indicated sum. Show your work. 4 k=1 (-1)^k(k+11) Inbetween the 4 and k , Theres a backwards 3 sign
  4. Algebra

    I need some help! Determine whether infinite geometric series has a finite sum. If so, find the limiting value. 112+56+28+....
  5. ^Maths^

    What iz d. sum ov all 3digit positive integers exist dat when divided by 7 leave a remainder ov 5
  6. calculus1

    When is the Mid-point rule is the worsted possible option for estimating area ( Riemann sum )?
  7. Math/Pre Cal

    Find the sum of the geometric series 128-64+32-______to 8 terms .
  8. latin american history

    I'm trying to sum up the key policies of Juan Peron. Can you help me? I've had no luck with the internet.
  9. pre-calculus 11

    The infinite series 1+3x +9x^2 +27x^3+.. has a sum of 4.The value of x is? so if 1/1-r I substitute 1/1-3x =4 so x=1/4 if someone could confirm that my answer is correct? thanks so much
  10. Geometry

    The value of y that minimizes the sum of the two distances from (3,5) to (1,y) and from (1,y) to (4,9) can be written as \frac{a}{b} where a and b are coprime positive integers. Find a + b.
  11. physics

    For an object in equilibrium the sum of the torques acting on it vanishes only if each torque is calculated based on your:
  12. math

    The 4th term of an Ap is 6. if the sum of the 8th and 9th terms is -72,find the common difference
  13. math

    Explain how you knew whether the sum was in simplest form in problem #1. 5 3/8 plus 2 1/4 (the fractions are mixed numbers)
  14. Math

    Sum(n=1 to infinity) ((2x+5)^n) / (n(4^n)) Can someone write out the steps to finding the center point for this power series?
  15. Stats

    A class of 85 students writing an exam had a mean mark of 74.2 write down the total sum of the 85 grades.
  16. math

    Two rational numbers with the sum of 1, product of -6/25 and quotient of -6. ( I have been working on this for a long time but I can't figure it out!)
  17. math

    If x is greater than 1 find the sum of infinity of x(squared)/x-1;x;(x-1).... And also the value of x for the given series (replace(;) with (add sign) please help
  18. Geometry

    The measure of central angle YCZ is 80 degrees. What is the sum of the areas of the two shaded sectors?
  19. maths-urgent

    if xi 's are the mid points of the class interval of grouped data, fi 's are the corresponding frequinces and x^u is the mean, then (sum of) fi( xi-x^u) is?
  20. Algebra

    The value of y that minimizes the sum of the two distances from (3,5) to (1,y) and from (1,y) to (4,9) can be written as \frac{a}{b} where a and b are coprime positive integers. Find a + b
  21. math ALG 2!

    Find three consecutive integers such that the sum of the second and the third is 17. Which equation would be used to solve this word problem? a.) x + (x + 1) + (x + 2) = 17 b.)(x + 1) + (x + 2) = 17 c.)x + (x + 2) + (x + 4) = 17 d.) 2(x + 2) + 3(x + 4) =
  22. Geometry

    The value of y that minimizes the sum of the two distances from (3,5) to (1,y) and from (1,y) to (4,9) can be written as \frac{a}{b} where a and b are coprime positive integers. Find a + b
  23. statistics

    can someone please tell me what the equation is to find the sum of squares...im looking online but everything is sohard to understand and all the symbols are confusing...?? thank you!
  24. statics

    two dices are rolled find the probability that the sum is less than 6 and what is the answer rounded to 4 decimals places
  25. ENGINEERING GRAPHICS

    construct a right angled triangle MNO ,having hypotenuse ON = 60 mm and the sum of its base and its altitude = 55 mm.
  26. Trigonometry

    Show algebraically how to confirm that cos2x=cos^2x-sin^2x using the sum and difference identities
  27. 3rd grade Math

    Write afact family with the sum of 17. Explain how you picked the addends.
  28. math

    Which numerical expression correctly translates the phrases 4 less than the sum of 9 and 2 ? 9 + 2-4, 9-4+2, 4- ( 9+ 2 ) , 4- 9 + 2 the correct answer I chose is 4-(9 +2) is that right. Thank you
  29. Math

    Find two consecutive odd integers such that the sum of four times the larger and twice the smaller is 194. Help Thank you!
  30. Trig math

    how to split up using sum and difference identities cos (13pi/12) PLeaseeeeeeeeeee help!!! thanx a million
  31. math

    P is the product ,n is the consecutive term of geometric progression, s is tje sum of their reciprocal then(S/R)n is equal a) p b) p2 c) p3 d) pn
  32. maths

    Integers a, b, c, d and e satisfy 50<a<b<c<d<e<500, and a,b,c,d,e form a geometric sequence. What is the sum of all possible distinct values of a?
  33. Calculous

    Without using a calculator, find the sum of the series. Pretend in place of E is Greek Letter Sigma. 27 E(4 + 1/2n) = ? N=0
  34. pre.al.

    find the measure of an angle if the sum of the measures of its complement and supplement is 162 degrees.
  35. 2008 math

    Write the following as a sum using powers of 10 to show place value and explain your steps. 3) 620.83
  36. math

    If a trees 93 feet tall cast a shade of 26 degrees what is the angel of evaluation of the sum
  37. Calculus

    Determine how many terms are required to approximate the sum of the series ((-1)^(n+1))/n^2 from n = 1 to inf with an error of less than 0.001.
  38. math

    If a trees 93 feet tall cast a shade of 26 degrees what is the angel of evaluation of the sum
  39. Math

    Find two consecutive odd integers such that the sum of four times the larger and twice the smaller is 194. Please help! Thank you!
  40. trig

    write equations expressing: 19cos(theta-50degrees) as a sum of sine and cosine.
  41. Math

    Use a left endpoint Riemann sum approximation with four subintervals to evaluate integral from 0 to 8 of g(x)dx These points were given: (0,-1) (1,-1.5) (2,-2.5) (3,-3) (4,-1.5) (6,-0.5) (7,-1) (8,-1.25
  42. ALGEBRA 1!!!! PLS HELP!!!!

    find four consecutive even integers such that if the sum of the first and third is multiplied by 3 the result is 44 more than 4 times fourth
  43. math

    test the series for convergence or divergence. the sum from n=1 to infinity of ((-1)^n*e^n)/(n^3) I said it converges because the derivative of (1/n^3) is decreasing
  44. algebra 2

    If x^2-x-1 divides ax^6+bx^5+1 evenly, find the sum of a and b. Show all steps and exlain your answer. Please, please help me out!! Thanks alot. =)
  45. math

    Find three consecutive odd integers such that four times the middle integer is two more than the sum of the first and third. I think I'm doing it wrong. 4((x)+(x+2)=x+(x+4)+2 4(2x+4)=2+3x+6 8x+16=3x+8 5x=8 ? Please help
  46. 5th

    Explorig adding Fraction. 3/4+1/8=? 1/4+ 1/8= 7/8+3/4= please show me how to do this problem.. thanks! next find the sum of 2/5and5/10.____.
  47. calculus

    test the series for convergence or divergence. the sum from n=1 to infinity of ((-1)^n*e^n)/(n^3) I said it converges because the derivative of (1/n^3) is decreasing
  48. Maths

    Two no. are in the ratio 5:8. If the sum of the no. is 195.find the no. Ans is 75 nd 120 plz gve me sltn
  49. Math

    Two six sided dice numbered 1-6 on each thrown simultaneously, what is the orobabolity that the sum of the two sides are greater than nine?
  50. Urgent math

    Find the partial sum Sn of the arithmetic sequence that satisfies the given conditions. a2 = 5, a5 = 6.5, n = 15 S15 =
  51. math

    find the sum of interoir angles of a anagon 140 1620*** 1260 1450
  52. math

    In a certain right triangle, the lengths of the legs have a sum of 50 and a product of 282. What is the length of the hypothenuse? A. 44 B. 42 C. 40 D. 25squareroot2
  53. algebra

    Show a complete algebraic solution for the following: find 4 consecutive multiples of 11 with the sum of 2178
  54. math

    when you add a positive and negitive integer and the one with the greater magnatude is negetive, what is the sign of the sum?
  55. math

    Divide a clock face with 1 straight line so that the sum of the numbers in each part are equal.
  56. Math

    Express fraction 9/4 as the sum of two or three equal parts. Rewrite the problem as a multiplication equation.
  57. Chem

    so I have a set of fill in the blanks for symbol, atomic number, mass number, protons, neutrons electrons and charge. Protons: 6 Neutrons: 8 Electrons: 2 I said the atomic number was 6, the mass number was 12, and the charge was +4. The only thing I was
  58. chem expirement!

    You are required to design an experiment to test Hess's law using the combustion of ethanol. Write a brief design for this experiment. What I wrote as my answer: Hess’ Law: is the algebraic addition of chemical equations yields a net equation whose
  59. 7th grade math

    A restaurant donates 2 cans of soup to charity for every 9 bowls of soup it sells. The number of cans of soup donated by the restaurant is proportional to the total number of bowls of soup sold. Which equation represents the relationship between b, the
  60. math(help)

    for questions 1-2,estimate the sum or difference.use the benchmarks 0,1/2,and 1. 1.23/40-9/30 A.0 B.1 C.1/2 2.simone measures the width of one cardboard strip as 1/2 yd.a second cardboard strip measures 5/6 yd in width.estimate the combined width of the
  61. Math Block Problem

    A child organizes animal blocks in rows on the ground. There are 64 animal blocks in the 5th row & 92 of those blocks in the 9th and last row. Suppose that the number of animal blocks frm row to row form an arithmetic sequence. The number of animal blocks
  62. math

    describe the situation from the veiwpoint of each person. during a year a person saves 12oo dollars and another person spends 500 dollar. which real number corresponds to saves 1200 dollars. type a negative number with a negative sign, or type a positive
  63. chm 2

    On the same type of problem as the previous one, it is now asking the pH of 1ml of NaOH plus 50ml water. If i solve for pOH taking .001ml / .051, i get the same number as before, can i just subtract the number from 14 to get pH of the basic solution? 12.29
  64. math

    A number cube is rolled 310 times and the results recorded: 50 ones, 55 twos, 44 threes, 53 fours, 52 fives, and 56 sixes. What is the experimental probability of rolling an even number, as a percent?
  65. Science

    Which best describes the similarities among elements included in the same column of the periodic table? A. They have the same state at room temperature. B. They have the same number of protons. C. They have the same number of electrons. D. They have
  66. math

    Suppose X is a random variable with mean μ and standard deviation σ. If a large number of trials is observed, at least what percentage of these values is expected to lie between μ − 3σ and μ + 3σ? (Round your answer to the nearest whole number.)
  67. 3rd grade math

    We have figured out answer BUT we cant figure out the steps to get it During gym class, the teacher gave students a number as they stood in line she counted 1, 2 and 3 then 1, 2 and 3 ...... What number did 22 second person get?
  68. math 3rd grade

    We have figured out answer 1 BUT we cant figure out the steps to get it During gym class, the teacher gave students a number as they stood in line she counted 1, 2 and 3 then 1, 2 and 3 ...... What number did 22 second person get?
  69. matn

    need help with word problem? half add it Find a number such that when added to numerator and denominator of 2/11 yields a fraction equivalent to 1/2? thanks for any help (x+2)/(x+11) = 1/2 x is the number you want. Now do the algebra. I will be happy to
  70. Math

    Joseph choose a mystery number. His mystery number is greater than 10 and less than 60. The mystery number has a remainder of 1 when divided by 6 and a remainder of 2 when divided by 5, what could be joseph mystery number.
  71. Chemistry

    Which statement concerning the electrons surrounding the nucleus of an atom is NOT correct? a) When 2 electrons pair together, they have opposite spins. b) The number of the electrons in an isolated neural atom is equal to the atomic number c) The second
  72. algebra 2

    What is the 20th term of the sequence that begins -3,6,-12,24? A. 524,288 B 524,288 C. 1,572,864 d. 3,145,728 The term in a geometric sequence is 160. the 7th term is 40. What are the possible values of the 6th term of the sequence? You roll a standard,
  73. Chemistry

    An element has three stable isotopes. One has a mass number of 63 and an abundance of 50%. The second has a mass number of 65 and an abundance of 30%. The third has a mass number of 67 and an abundance of 20%. Calculate the relative atomic mass of this
  74. Grade 11 maths plz help!!!

    A software company started with 2 employees. In 6 months, the company had 7 employees. The number of employees increased in a steady rate. Which equation models the relationship between the number of employees n and the number of months m since the company
  75. MATH/ Check?

    Correct. what is pi The definition or the number? The number is 3.14159 but that isn't an exact number. pi doesn't have an exact number except by definition and that is in words and not a number. The ellipse in question above( is translated 4 units to the
  76. Completely Randomized ANOVA

    Forty eight subjects were randomly assigned to one of 4 treatment conditions in a study of different methods of coping with statistics exam anxiety. After the experiment, 12 subjects remained in group 1, 8 in group 2, 10 in group 3, and 10 in group 4. The
  77. Economic

    The Admissions Director (AD) wants to determine the optimum number of students for each ECO561 class. You are provided with the following data: Tuition is $1250 per student. Instructor Pay $2500 Other incidental (variable) costs - $1000.00 Variable cost
  78. math

    i think this one is right..but im not sure..Argyle has 8 T-shirts and 5 pairs of shorts that he wears with either sandals or sneakers. If all the colors and patterns coordinate, how many different outfits can he make?? i think its 80...but im not sure one
  79. Mathematics

    Jabulani thinks of a number sihle multiplies this number by 6 and John multiplies it by 3 and adds 9 sihle and John get the same answer what number did Jabulani think of How to solve it
  80. calculus

    The number of Drosophila fruit flies in a controlled experiment assumes the following growth pattern when the food source is limited: N(t) = 120 1+11e−0.4t where t measured in days. A. How many fruit files were there in the beginning? B. What is the
  81. math 6 grade

    If 2 people have 60 shares of stock between them and you double the number of shares of the 1st person and half the number of shares of the 2nd person so that they both have equal shares. How do find the number of shares the 1st person has?
  82. 6th grade math quiz

    1. Which of the following sample spaces correctly lists all the possible outcomes for flipping a coin and spinning a four-colored spinner (red, blue, green, and yellow)? A. H-red, H-blue, H-green, H-yellow, T-yellow, T-green, T-blue, T-red B. H-red, T-red,
  83. Math

    Ms.abbot went on a road trip. The trip was 792 miles and the average price of gasoline was $1.30 per gallon. What information is needed to to find the amount spent on gasoline for the trip? A. Number of hours the trip took B. Number of miles per hour the
  84. Chemistry Help.......

    Which element results if 2protons and 2neutrons with the atomic number 88 and mass number 226? Show workings Help please Since this is not my area of expertise, I searched Google under the key words "atomic number 88" to get these possible sources:
  85. math

    In Lewis Carroll's Through The looking Glass, Tweedledum says, "the sum of your weight and twice mine is 361 pounds". Tweedledee replies, "The sum of your weight and twice mine is 362 pounds". Find both weights. ONLY AN ALGEBRAIC SOLUTION WILL BE ACCEPTED
  86. math

    One shelf at Cover-to-Cover Bookstore contains copies of several books on the best-seller list. Half of the books on the shelf are copies of the Number 1 best- seller. Of the remainder, 1/4 are copies of the Number 3 book. The rest are copies of the Number
  87. Math

    Can someone please help me with this Algebra problem. The equation y= -1777x + 27,153 can be used to predict the number of y of gun deaths in the U.S. x years after 2000, that is, x=0 corresponds to 2000, x=2 corresponds to 2002, x-6 corresponds to 2006,
  88. statistics

    1. A company decides to add a new program that prepares randomly selected sales personnel to increase their number of sales per month. The mean number of sales per month for the overall population of sales people at this national company is 25 with a
  89. Calculus Help!

    At a price of $7.5 per ticket, a musical theater group can fill every seat in their 1500 seat performance hall. For every additional dollar charged for admission, the number of tickets sold drops by 95. a) What ticket price maximizes revenue? Round your
  90. Algebra 1

    Julie subscribes to a sports magazine and a fashion magazine. She received 24 issues this year. The number of fashion issues is 6 less than twice the number of sports issues. Define the variables, and write a system of equations to find the number of
  91. Physics

    So I have worked out the 'allowed' configurations for four particles which can occupy 5 different energy levels (1, 3, 5, 7, 9) and now I need to work out the average number of particles in a particular energy level (i.e 3). 1) 9,5,1,1 2) 9,3,3,1 3)
  92. Math

    Need equation form for this number problem. Theater tickets are $8 for general admission and $5 for students. During one evening 240 tickets were sold, and the receipts were $1680. How many of each type of ticket was sold? use the equations and solve g
  93. math

    OMG I CAN NOT get this !!!! Purchase price of article = $495 Down payment = $50 Number of payments = 36 True annual interest rate = 18% Monthly payment amount = $ The formula is I= 2YC ________ M(N+1) y = the number of payments made in a year. m = the
  94. Math

    The total number of DVD videos produced and shipped in 1998 was .5 million. In 2004,the total number of units reached 29.01 million. Assuming the exponential model applies: a)Find the value of k and write the function b) Estimate the number of DVD videos
  95. graphing linear non proportional relationships usi

    the equation y=-0.04×+ 12 gives the number of gallons of gad in your car, where × is the number of miles driven. Graph the equaton. Interpret the slope and y-inercept of the line
  96. IB Math Studies

    Would it be appropriate to use a chi-square test for analysis of statistics in the following topics? •Number of Surgical Fatalities vs. U.S. State •Number of professional men’s soccer injuries vs. country of their team
  97. Math Reiny question

    This is the problem you helped me with. I was curious, do I write the solution set as (1 + i3ã3)/2, (1-i3ã3)/2 change it to the standard form first x^2 - x + 7 = 0 a=1, b=-1, c = 7 x = (1 } ã(1 - 4(1)(7))/2 = (1 } ã-27)/2 Your answer is an
  98. Business

    Help find information on this The collapse of Enron, Worldcom, and other firms has raised a number of questions concerning the ethical standards of outside auditors. As a result, a number of new rules and laws were adopted i need to describe these changes
  99. Math clarification Reiny

    This is the problem you helped me with. I was curious, do I write the solution set as (1 + i3ã3)/2, (1-i3ã3)/2 change it to the standard form first x^2 - x + 7 = 0 a=1, b=-1, c = 7 x = (1 } ã(1 - 4(1)(7))/2 = (1 } ã-27)/2 Your answer is an
  100. Math - Data Management

    It is a grade 12 course, and our current unit is Combitionations. There is on questions where there is a 4 x 4 cubic diagram, like the 1x1 squares on graphing paper but 4x4. The question is to explain how the formula 5C2 x 5C2 gives the answer to how many