1. math

    I need to find the sum of 2/5 and 3/4. The LCD is 20 so I did 2x4=8 and 3x5=15. so I got 8/20 + 15/20 = 23/20, but this does not match any of the answers I have to pick from. What am I doing wrong?

    asked by Dar on December 9, 2012
  2. maths

    Integers a, b, c, d and e satisfy 50

    asked by shiv on June 17, 2013
  3. pre-calculus

    use a sum or difference formula to find the exact of the trigonometric function cos(-13pi/12)

    asked by lina on April 3, 2012
  4. math

    The third and fifth term of an arithmetic progression are 10 and-10 respectively. a)Determine the first and the common difference t3 = a + 2d = 10 t5 = a + 4d = -10 -a -2d = -10 a + 4d = -10 2d = -20 d = -10 a + 2(-10) = 10 a -20 = 10 a = 30; d = -2 b)The

    asked by kudu on February 8, 2015
  5. computer programming

    given three numbers A,B,C. draw a flowchart to compute and print out the sum, average and the product of these values.

    asked by joren on April 21, 2016
  6. 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

    asked by Leon on December 12, 2014
  7. calculus

    given: f(x) = 2-1/4 x Evaluate the Riemann sum for 2 ≤ x ≤ 4 , with six subintervals, taking the sample points to be left endpoints.

    asked by ben on January 16, 2009
  8. 3rd grade

    Use compatible numbers to complete this problem. Then estimate the sum. 3,428 +432 _____

    asked by amanda on September 9, 2010
  9. College Physics

    When I graphically find a vector sum and then analytically solve for the resultant, I am getting two completely different answers. Why might this be?

    asked by Anonymous on February 28, 2010
  10. pre.al.

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

    asked by keon on November 15, 2007
  11. Calculus

    Give a Right-hand sum approximation of integral 1 to 4 of x^2 with n=4? I have done this problem alot and my teacher says the answer is 30 but I cant get it. HELP

    asked by Jason on April 19, 2015
  12. math

    write the sum. show the make-a-ten fact you used. 9 + 7 = ______________ 10 +____________=_______________

    asked by mary on November 9, 2010
  13. Math

    The sum of two opposite angles of a parallelogram is 130 degree. Find the measure of each of its angle.

    asked by Tapas on November 9, 2010
  14. maths lit

    Calculate the simple interest and the sum accumulated for R5000 borrowed for 90 days at 15% per annum

    asked by matiwane on June 16, 2017
  15. Math

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

    asked by Katherine on January 9, 2014
  16. math

    The sum required to earn a monthly interest of Rs.1200 at 18% per annum Simple Interset is:

    asked by Haroon Gondal on November 9, 2015
  17. Math

    One positive integer is three moee than twice another and their sum is greater than 65 but less than 75. What pairs of integers satisfy this conditions?

    asked by Raquel on February 14, 2016
  18. 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?

    asked by Ginny on July 31, 2017
  19. Math

    One positive integer is three moee than twice another and their sum is greater than 65 but less than 75. What pairs of integers satisfy this conditions?

    asked by Raquel on February 15, 2016
  20. math

    calculate the infinite sum of a geometric series with first term 15,000 and common ratio by (1-1/10)

    asked by john on December 6, 2010
  21. trig

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

    asked by Don on November 6, 2011
  22. psychology

    For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard deviation: 3.0, 3.4, 2.6, 3.3, 3.5, 3.2

    asked by mary sweazie on October 21, 2009
  23. trig

    write an equation expressing 19cos(theta-50degrees) as a sum of sine and cosine.

    asked by Kate on November 6, 2011
  24. Pre Cal

    Find the manitude of each vetcor, and write each vector as the sum of the unit vectors. Choose either one (2,6) or (4,-5) Thank you

    asked by amy on January 9, 2010
  25. 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

    asked by sarah on February 27, 2008
  26. math

    the sum of 11terms of A.P is 891.find the 28th and 45th terms if the common difference is 45

    asked by emi on June 7, 2014
  27. 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?

    asked by Anonymous on May 23, 2011
  28. Maths

    What is the sum of all integer values of n satisfying 1≤n≤100, such that n2−1 is a product of exactly two distinct prime numbers?

    asked by Ian on March 28, 2013
  29. 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?

    asked by Anonymous on May 23, 2011
  30. Math

    Explain how to find 14 x 19 by breaking apart the factors into tens and ones and finding the sum of the four partial products

    asked by Mia on December 9, 2010
  31. Maths

    What is the sum of all integer values of n satisfying 1≤n≤100, such that n^2−1 is a product of exactly two distinct prime numbers?

    asked by Ian on March 28, 2013
  32. Algebra

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

    asked by Kris on April 16, 2013
  33. Algebra

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

    asked by Kris on April 16, 2013
  34. 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

    asked by laura on February 28, 2008
  35. 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

    asked by mbango sonwabo on March 6, 2014
  36. geometry

    prove that The sum of the angles in any triangle is 180 degrees is true in Euclidian geometry.

    asked by denise on February 26, 2013
  37. physics

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

    asked by Hector on February 25, 2012
  38. math

    esimate each sum or difference by rounding to the place value indicated. 37,097 - 20,364 ten thousand

    asked by shion on August 28, 2012
  39. math

    need help how to solve rounding riddles? rounded to the nearest ten. I am 170. The sum of my digits is 14.

    asked by Noah on September 28, 2011
  40. math

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

    asked by Bello Boluwatife on November 8, 2015
  41. Intermediate Algebra

    Express as a sum, difference, and product of logarithms, without using exponents.logb^3 sqrt x^8 divided by (y^2)(z^5)

    asked by Chelsea on June 16, 2010
  42. 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?

    asked by Ginny on July 31, 2017
  43. Algebra

    Can you help me set this problem? it is as follows, "Find three consecutive odd integers such that their sum is 5 more than four times the larger."

    asked by jubillee on February 22, 2012
  44. math

    "Find a quick and easy method to compute the sum of the first 100 counting numbers."

    asked by Terri on February 6, 2010
  45. 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)

    asked by Mackenzie on March 25, 2016
  46. 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!)

    asked by Bo on February 8, 2010
  47. matha

    the sum of area and perimeter ofintegral right angle triangle is 288. find the sides.

    asked by Anonymous on September 3, 2012
  48. MATH

    I NEED ASSISTANCE WITH THE ANSWER TO THIS PROBLEM....SHOW THAT EACH OF THE EVEN NUMBERS 6, 8, 10, AND 12 CAN BE WRITTEN AS THE SUM OF A GROUP OF TWOS.....

    asked by CONFUSED MOM on September 10, 2007
  49. 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.

    asked by Rachael on September 26, 2012
  50. Chemistry

    Balance the net ionic equation I− + NO− 2 ! NO + I2 (in acidic solution). What is the sum of the coefficients? Use H+ rather than H3O+ where appropriate. 1. 13 2. 15 3. 17 4. 11 5. 19

    asked by Jeremy on October 20, 2010
  51. algebra

    Write an algebraic equation for the English statement "Add 5 to the sum of 2 times x and the result is 21."

    asked by jo on July 27, 2008
  52. 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

    asked by Johnnie on April 25, 2018
  53. Maths

    SAMUEL IS 5 YEARS OLDER THAN HIS BROTHER .THE SUM OF THEIR AGES IS 33.WRITE A MATHEMATICAL EQUATION?

    asked by Maths on September 28, 2017
  54. Math

    1.What is the sum of 5/6 + 2/3? (1 point) A. 1 1/3 B. 1 1/2* C. 1 2/3 D. 1 3/4 2. Sylvia has 6 1/2 boxes of chocolate to share at a family picnic. If she gives each person1/3

    asked by Anonymous on September 29, 2017
  55. Math

    The sum of four consecutiv multipl of 4 is 120.find these multipls. Plz gve me sltn

    asked by Simran kaur on November 7, 2012
  56. 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

    asked by Anissa on March 6, 2017
  57. Algebra1

    What is the algebraic expression for the following word phrase: the sum of 8m and 3? A. 8m-3 B. 8m+3 C. 8m/3 D. 11m My answer is D, but if I'm wrong, could you help and explain why?

    asked by Lolli on September 19, 2018
  58. math

    A sum of ₹400 amounts to ₹480 in 4 years.What will it amount to, if the rate of interest is increased by 2%p.a.?

    asked by Karan on February 7, 2016
  59. math

    Estimate the sum to the nearest tens place 150+121+141+149=

    asked by kee on May 3, 2017
  60. 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

    asked by Mark on February 25, 2018
  61. calculus1

    When is the Mid-point rule is the worsted possible option for estimating area ( Riemann sum )?

    asked by 4hand on June 10, 2018
  62. Statistics

    If a pair of dice (one red; the other blue) are rolled, Find the probability of landing on a sum of 9

    asked by Kalee on April 25, 2015
  63. math

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

    asked by bogger on March 27, 2017
  64. Calculus II

    Consider the sequence: (a,sub(n))={1/n E(k=1 to n) 1/1+(k/n)} Show that the limit(as n-> infinity) A(sub(n))= ln 2 by interpreting a(sub(n)) as a Reimann Sum of a Definite Integral.

    asked by chelsea on April 15, 2014
  65. Math

    WHAT NUMBERR,WHOSE SUM OF ITS DIGITS IS 26,BECOMES 6000 WHEN ROUNDED TO THE NEAREST THOUSANDS? LIST 3 POSSIBLE ANSWER.

    asked by Winilyn on June 25, 2018
  66. science(physics)

    the sum of three forces f1=100n, f2=80n, f3=60n acting on a particle is zero. The angle between f1 and f2 is: Please solve

    asked by marley on June 9, 2011
  67. 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

    asked by Simran kaur on November 2, 2012
  68. Geometry

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

    asked by Marcelo on November 16, 2016
  69. 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

    asked by bernie on July 29, 2016
  70. math

    a pair of dice is rolled. what is the probabilty of each of the following? a. the sum of the numbers shown uppermost is less than 5. b. at least one six is cast.

    asked by Dee on April 15, 2014
  71. math

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

    asked by Annabella Richards on June 12, 2011
  72. Maths

    Construct a triangle ABC IN WHICH BC= 5.5 CM ,ANGLE B=60DEGREE AND SUM OF OTHERtwo SIDEs is 8.6cm

    asked by Sebi on January 23, 2017
  73. math

    In how many years time will a sum of money quintuple at a rate of 4% per annum compounded quarterly?

    asked by farahan on November 15, 2015
  74. Math

    why is it possible to find the sum of the angle measures of an n-gon using the formula (180n-360) *degrees*

    asked by Amanda on December 2, 2010
  75. Geometric progression

    The first term of an infinite geometric progression is 1 and the sum of the terms is 13, find common ratio.

    asked by Rahul on October 13, 2016
  76. alegebra 1

    the question is a diamond problem and it already gives you the sum of 24 on top and -11 on bottom can someone please help me? I would really appreciate it! ( please do not give me the answer just need some pointers)

    asked by haylee on September 3, 2014
  77. Math

    Two 6-sided dice are rolled at the same time. How many outcomes correspond to the event that the sum of the numbers is 5?

    asked by Sami on June 9, 2014
  78. math

    how do i go about solving the follwoing problem: using the digits 1 to 9, arrange the numbers in three groups so that the sum is the same in each group. Is there more than one way to do this?

    asked by Gray on October 23, 2007
  79. 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.

    asked by John on March 27, 2013
  80. calculus

    find the sum. use the summation capabilities of a graphing utility to verify your result. 5 Sigma (3a) k=2 ??

    asked by jessica on April 18, 2013
  81. 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.

    asked by Anonymous on March 15, 2018
  82. algebra

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

    asked by Anna on February 17, 2010
  83. 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.____.

    asked by pat on December 15, 2010
  84. Maths

    A sum of rs400 amounts to rs480 in 4years. What will it amount to if the rate of interest is increased by 2% p.a

    asked by S on October 23, 2017
  85. Maths

    What is the sum of all integer values of n satisfying 1≤n≤100, such that n2−1 is a product of exactly two distinct prime numbers?

    asked by Ian on March 28, 2013
  86. Math

    Complete to show how you can find the sum by making a ten, hundred or thousand: 9+5=__ 9+1+__ 10 +__ ______

    asked by Emy on September 7, 2011
  87. Calc 2

    Consider the sequence: (a,sub(n))={1/n E(k=1 to n) 1/1+(k/n)} Show that the limit(as n-> infinity) A(sub(n))= ln 2 by interpreting a(sub(n)) as a Reimann Sum of a Definite Integral.

    asked by chelsea on April 14, 2014
  88. PSY/315

    For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard deviation: 2, 2, 0, 5, 1, 4, 1, 3, 0, 0, 1, 4, 4, 0, 1, 4, 3, 4, 2, 1, 0

    asked by Anonymous on July 3, 2013
  89. maths

    What is the sum of all integer values of n satisfying 1≤n≤100, such that n2−1 is a product of exactly two distinct prime numbers?

    asked by number theory on March 27, 2013
  90. 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

    asked by Anonymous on March 27, 2013
  91. 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

    asked by Anonymous on March 27, 2013
  92. Math

    Write as a fraction or mixed number: 1) 0.85 2) 3.6 3) 0.888... We read 0.85 as eighty-five hundredths. Expressed as a fraction it's 85/100. Please tell us what you think the other two numbers are expressed as a fraction or mixed number. We'll be glad to

    asked by Zoie on June 13, 2006
  93. Math

    Suppose that the number of cars manufactured at an automobile plant varies jointly as the number of workers and the time they work. If 340 workers can produce 204 cars in 4 hours, find the number of workers that can produce 180 cars in 3 hours.

    asked by Anonymous on March 11, 2016
  94. calculus

    In a certain region, the number of bushels of corn per acre, B, is given by the function B(n)=-0.1n^2 + 10n, where n represents the number of seeds, in thousands, planted per acre. If corn sells for $3/bushel and cost $2 for 1000 seeds, find the optimal

    asked by Nick on April 4, 2011
  95. math

    1. The largest of five consecutive integers is twice the smallest. Find the smallest integer. 2. When the sum of three consecutive integers is divided by 9 the result is 7. Find the three integers. 3. If each of three consecutive integers is divided by 3,

    asked by rita on July 14, 2013
  96. Programming Fundaments 1201

    4.Write a program that will predict the size of a population of organisms. The program should ask for the starting number of organisms, their average daily population increase ( as a percentage), and the number of days they will multiply. For example, the

    asked by BEATA on June 16, 2016
  97. Stats

    The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience. Admissions Probability 1,080 0.5 1,340 0.2 1,660 0.3

    asked by Nicole on September 28, 2010
  98. math

    At a football game, a vender sold a combined total 210 of sodas and hot dogs. The number of sodas sold was 44 more than the number of hot dogs sold. Find the number of sodas sold and the number of hot dogs sold.

    asked by lisa on March 8, 2013
  99. math

    Organizer of school graduation does have three sections of chairs. 1120 chairs are arranged for graduates, 1400 for invited guests and 896 for lecturers. If all rows have same number of chairs, calculate the greatest number of chairs in each row if no

    asked by vizzy on February 26, 2015
  100. Math

    You spin the spinner once (1-6) and roll a number cube (1-6) once. Find the probability that the spinner stops on the same number that you roll with the number cube.

    asked by Doey on January 7, 2017