1. 3rd grade

    when i am rounded to the nearest 10, I am 40. The sum of my digits is 8. I can be two different numbers. Who am I?
  2. math

    Find the difference between the sum of 378 and 401 and the product of 43 and 17
  3. Math

    Find two numbers a and b whose sum a+b is -1 and whose difference a−b is 5. I do not understand the question
  4. math

    any help would be great The sum of 2 consecutive integers is equal to their difference.
  5. Math

    In Magic Diamond use numbers 1-12. Each row must equal the same sum. # # # # # # # # # # # #
  6. Algebra

    What is the sum of all the possible values of a for which 25x^2 + (a-15)x + 9 has exactly one distinct real root?
  7. math

    How many positive integers less than 1000000 have the sum of their digits equal to 7?
  8. arithmetic

    Please can you tell me if the sum of this equation is correct? 19+2x5-11=18. Am I right to use BODMAS to solve it? Thanks for your help.
  9. algebra

    How do i write; The product when the sum of y and twelve is multiplied by five is one hundred.
  10. algebra

    Jennifer is twice as old as Ramon. The sum of their ages 7 years ago was 13. How old are they now?
  11. math

    How many different integers can be expressed as the sum of three different numbers in the set (1,2,3,4,5,6,7)? Can anyone explain this one to me??? Thank you!
  12. Math

    In how many ways can two dice be rolled to yield a sum divisible by 3?
  13. math

    what is the sum of all proper fractions with denominators less than ten? help me plssss
  14. introduction to programming

    Write a program to find the sum of the series: 1/12+1/22+1/32+…..1/n2.
  15. math

    Find the sum of the infinite geometric series, if possible. 12 + 10 + 25/3 + 125/18 + ...
  16. math

    Find the indicated nth partial sum of the arithmetic sequence. 2, 10, 18, 26, . . ., n = 15
  17. Maths (urgent)

    Find the sum of the first three prime numbers that end with a 9
  18. Math

    Find two numbers whose ratio is 4 to 3 and are such that the sum of their squares is 100.
  19. math

    Two dice are rolled. Find the probability of getting a sum greater than 8
  20. science

    what term refers to the sum of all of the forces acting on an object?
  21. 5th grade

    The sum of my two digits is 13. I am not divisible by 2. List all possible numbers I could be.
  22. statistics

    A sum of twelve given a pair of sixes. give explanation
  23. math

    lf the first of an AP is 7 and 80th term is 393,find the sum of the first 80 terms
  24. Physics

    The sum of 5.2713x10^3 + 6.54014x10^3 expressed to 4 significant figures would be?
  25. algebra

    what is the equation of the ellipse with goci at (0,-4) and (0,4) and the sum of its focal radii being 10?
  26. math

    find the sum cos^2(j) + sin^2(j), if j = p/3 -do I have to use a pythagorean identity?
  27. math

    Give me an example. How to write a fact family with a sum of seven- teen?
  28. Algebra

    Which of the following expressions equals the sum of the binomial factors of 6q^3-5q^2+24q-20? A. 7q^3-1 B. 6q^3-1 c. q^2+6q-1 D. q^2+6q+1
  29. Algebra

    What is the sum of all the possible values of a for which 25x^2 + (a-15)x + 9 has exactly one distinct real root?
  30. Maths

    Using each of the 10 digits 0 to 9 just once, is it possible to form positive integers who se sum is exactly 100?
  31. math

    using two fair dice, what is the probability of rolling a sum that exceeds 4?
  32. Maths

    If sum of three consecutive term of A.P. is 48 and product of first and third is 252 then find d?
  33. Maths

    If sum of three consecutive term of A.P. is 48 and product of first and third is 252 then find d?
  34. mathT

    The integer 90can be expressed as the sum of z consecutive integers. The value of z could be any of the following except A) 3 B) 4 C) 5 D) 6 E) 9
  35. math

    in a division sum dividing by 8 ,any remainder must be(a) more than 8,(b) half of 8,(c)less than 8,(d)equal to 8
  36. Mathe

    ) Two dice are thrown. What is the probability that the sum of dots shown is 4 or 6? a) ¼ b) 1/6 c) 2/9 d) 5/18
  37. Math

    What is the sum of all values of k such that the equation 2x^2-kx+8=0 has two distinct integer solutions? Thank you for your help! :)
  38. algebra

    the product of 2 consecutive intergers is one more than their sum...Find the integers?
  39. math

    Factor using the formula for the sum or difference of two cubes. x^6 - 27y^3
  40. maths

    i am a mutiple of 5 ,but not a mulitple of 10.my units and hunderde are the same.the sum of my three digits is 11,what am i
  41. Math (kindergarten)

    Break apart the addends. Solve for the total sum. 18 + 21 --------
  42. Math 10

    Express as sum or difference of logarithm log of x(3x-5) to the base of 4
  43. Algebra 2

    Simplify each sum or difference. State any restrictions on the variable. -3x/x^2-9+4/2x-6
  44. Pre-Algebra

    Write an expression for the model. Find the sum. A. 2 + 3; 5 B. 2 + (–3); 1 C. 2 + (–3); –1 D. –3 + 2; 5
  45. Calculus

    What is the Riemann sum to find the area under the graph of the function f(x) = x4 from x = 5 to x = 7.
  46. Math

    Write a numerical expression that represents the sum of 9 squared and 35
  47. Math

    What is the sum of the interior angle measures in an equilateral triangle?
  48. math

    use the digits 3,5,9,4 only once to make 2 addends whose sum is between 100 and 110
  49. calculus

    find the two numbers whose sum is 10, if the product of one by the cube of other is a maximum.
  50. Math

    Find the sum of the first five terms of a geometric series with g1 = -16, g5 = -38,316, and r = 7.
  51. Polynomials

    can someone show me how to get the sum, difference and product of this problem 2x^2-1∶ x^3- x^(2 )+ 2^x- 1
  52. MATH I NEED HELP PLEASE!

    DETERMINE THE SUM OF THE FOLLOWING GEOMETRIC SERIES A. -1/32+1/16-...+256 B. 50 over Σ 8(.5)^n-2 where n=1
  53. Maths

    A hexagon has 6 sides, find the sum of the interior angles.
  54. Polynomials

    Can someone please help me get the sum difference and product of this problem I am so lost x^3+ 2x-5∶ x^4-x^3+ 3x^2- 2x+3
  55. math

    Find the partial sum without using a graphing utility. 100 2n n = 1
  56. trig

    use an angel sum identity to verify cos2theta = -2cos^@-1
  57. math

    Evaluate the sum: [(infinity) sigma i=0] (i/(4^i)) the answer is 4/9, but what's the step? Thank you.
  58. math

    find three consecutive odd integers such that the sum of three times the first and the third is 72
  59. Science

    What term refers to the sum of all of the forces acting on an object?
  60. math

    How many positive integers less than 1000000 have the sum of their digits equal to 7?
  61. math

    If #(a,b,c,d)means you subtract the sum of the terms from zero, and # (4,-8,11,d)=14, then d= answer and explain
  62. Math

    Use benchmark to estimate the sum, difference, or product 14/16 + 1/5 A - 2 B - 0 C - 1/2 D - 1 My answer is A
  63. math

    The sum of two opposite angles of a parallelogram is 130 degree.
  64. math

    find the sum of the first 8th term of the Geometric progression, 1,3,9,27
  65. Math

    The sum of 2 numbers is 12. 6 less than 5 times the smaller is equal to the larger
  66. Algebra 2

    Consider 2 dice being rolled together. Calculate the probability of rolling an even sum
  67. Pre Calculus

    use the sum of difference formula what is sin(pi/2-5pi/3)?
  68. Math

    Find the exact value of sin75degrees using sum identity of sine
  69. English

    Does anyone know of any Scarlet Letter quotes that sum up the theme of isolation? Thanks
  70. MATH HELP ME NOW PLEASE!!

    DETERMINE THE SUM OF THE FOLLOWING GEOMETRIC SERIES A. -1/32+1/16-...+256 B. 50 over Σ 8(.5)^n-2 where n=1 HELP PLEASE!!!!!!
  71. algebra

    please write an equation. what is the quotient of the sum and difference of 370 and 25
  72. trig

    Express sin4xcos3x as a sum or differences of sines and cosines
  73. Trigonometric

    Find the exact value of cos7(pi)/12 using sum and/or difference identities.
  74. math

    Find the sum of the squares of the three solutions of the equation x^3+3x^2−7x+1=0.
  75. math

    How can I explain the angle sum theorem? and whats a good example for it?
  76. math

    If two dice are rolled one time, find the probability of getting a sum less than 5.
  77. math

    using n as the variable, how do you find 3 consecutive integers in which 3 times the sum of the first two is 16 more than the third?
  78. quantitative

    how long will it take a sum of money to tripple itself at 16%p.a simple interest
  79. algebra

    how would you solve: Find the sum of the first 12 terms to the earest hundreth 6 + 2 + 2/3 +...
  80. Math

    fred is more than 3 years more than twice the age of jane. the sum of their ages is 48. how old is each?
  81. Math

    Find the sum of an A.P of seventeen terms whose middle term is five .
  82. Math

    Give the sum of the greatest five consetive even numbers less than 7000
  83. 9th grade

    What is the formula for the sum of exterior angles of a octogon?
  84. Math

    How do you find the GCF from 55 + 22 = and rewrite the sum using the Distributive Property?
  85. Math

    Give the sum of the greatest five consecutive even numbers less than 7000.
  86. math

    Find the three consecutive odd numbers whose sum is 147.
  87. pre-algebra

    Difference and sum of cubes; please help me solve this problem; 8t^3 + y^3
  88. math(urgent)

    Find the sum to n terms of 1/(1.2.3) + 3/(2.3.4) + 5/(3.4.5) + 7/(4.5.6) +.... Answer this Question
  89. MATH

    What is the probability of obtaining a sum of at least 7 when rolling a pair of dice?
  90. Math

    Use the distributive property to express each sum with the GCF factored out. 32+56
  91. Algerbra

    Which equation represents the situation? The sum of three consecutive even integers is 24. A.x+(x+2)+(x+2)=24 B.x+(x+4)+(x+6)=24 C.x+(x+2)+(x+4)=24 D.x+(x+1)+(x+2)=24
  92. Math

    Estimate. Then find the sum 540,943 + 382093
  93. Math

    Use the distributive property to express each sum with the GCF factored out. 32+56
  94. Math

    Find two numbers whose difference is 16, and the sum of whose squares a minimum.
  95. maths

    the sum of anumber x and twice another is 20.if the product of these numbers is not more than 48 , whate are all possible values of x?
  96. algebra

    sarah is twice as old as katie. 10 years ago, the sum of their ages was 23. How old are they now
  97. math

    If I roll a pair of dice 500 times what sum would appear the most
  98. 5th grade math

    if the average of 6 numbers is 12 then what is the sum? How would you figure this?
  99. math

    Find three consecutive odd integers such that twice the sum of the first and second is one less than three times the third.
  100. 4 grade math

    Find two mixed numbers so that the sum is 15 3/10 and the difference is 8 5/10