1. Algebra 2

    What is the sum of the arithmetic series 5 (sigma sign) n-1 (3n-2)?
  2. Math

    Write an equation. The sum of 2 consecutive integers 48.
  3. algebra

    How do I find out the sum of the first 38 terms of the sequence using 4,8,2,6,2,4,8,2,6,2... I am confused.
  4. math algebra

    what are 4 consecutive integers whos sum is -2
  5. Algebra 2

    5+(-5/2)+(5/4) Sn=189 Find n for the given sum if the geometric series
  6. geometry

    the sum of a polygon with(2n-3) sides is 62 righht angles
  7. mathematics

    how many terms in the series 18-16-13-....must be added to give a sum of 44?
  8. Geometric progression

    Fin the sum of the series 1+2+4+8+....to 12 terms.
  9. maths

    3/4 of a sum of money is 54p find the whole amount.
  10. Math

    The sum of two numbers is 3.What is the maximum value of the product of the first and the square of the second?
  11. Math

    Martha is twice as old as her younger brother. The sum oh their ages is 36. How old are they?
  12. math

    What would the expression be if the problem was "the sum of four consecutive numbers." ?
  13. maths

    I am equivalent to 1/2 the sum of my numerator and denominator is 15. What fraction am I?
  14. Math

    What is the sum of all prime numbers less than 500 with only 3s and 4s as digits
  15. Math

    Prove that the sum of angles of a quadrilateral is 360.
  16. calculus

    Find the sum of the series: 10 + 14 + 18 + 22 +...+138 and 6-12+24-48+96-...+1536
  17. Math

    Describe and correct the error in finding the sum. 3/10 + (- 1/10) = 3+1/10 = 4/10 = 2/5
  18. Algebra help please!

    Write the sum of the two vectors as an ordered pair. (6,-5) and (3,3) A. (-,-2) B. (6,1) C. (1,6) D. (-2,9)
  19. Chemistry

    The principal quantum number, n, describes the energy level of a particular orbital as a function of the distance from the center of the nucleus. Additional quantum numbers exist to quantify the other characteristics of the electron. The angular momentum quantum number (ℓ...
  20. English

    I think it's a, but document formatting messes me up a little :) Any help would be great, and much appericated When citing a source within the body of your essay, what must be included after the quotation marks at the end of the sentence (when the author’s name has already ...
  21. programming

    write a java application to calculate the exponent value of a number using the following specification <Prompt the user to enter an integer value <Pass the integer value to the method squares the number and to a method cubes the number.The result must be returned to the ...
  22. Econ Help

    Trying to study for test, don't understand. (3) Suppose that the slope of a curve showing the relationship between the number of burglaries per month (on the vertical axis) and the number of police officers (on the horizontal axis) is –0.60. a. Compute the change in the ...
  23. math12

    What is the third number in the 156th row of Pascal's triangle? I know that it is 154 x ___ how do I find out the number? thanks in advance
  24. math

    . I am thinking of a whole number. If I divide it by 13, then multiply the answer by 12, then subtract 20, and then add 89, I end up with 93. What was my original number?
  25. math

    Mrs. Jones is thinking of a number that when rounded to the nearest hundred is 400. what is the number? explain
  26. algbrea

    translste the sentece into an equation and slove it.if 4 times a number is decreased by 9, the result is 19. find the number?
  27. math

    In the experiment of rolling a pair of dice, compute the probability of an even number or a number greater than 3 facing up.
  28. math

    how would you approach this problem..the difference between two numbers is 2184..the larger number is 3 times the smaller number
  29. math

    If you place the ... comparing 1272 and 1269. Do you need to cmpare the ones digits? Which number would be the farther to the right on the number line and why?
  30. Math

    tossing a coin tails up or rolling a number less than 4 on a number cube. I got 1/2 + 3/6 and got 1. The answer is 3/4. I don't understand what to do. Please help.
  31. Math

    An odd number is less than 160 and has exactly three defferent prime factors. What is the number? Explain your reasoning. ??? AAAH! help!
  32. sito gbethrome senior school

    a number is picked from the set {1,2,3,-,18}.find the probability that it is either a multiple of 3 or a number less than 7
  33. math

    what dose this mean when you divide a decimal number by a whole number your estimate is 3.4 identify 3 possible pairs of numbers you might have been dividing ?
  34. Math

    A standard number cubes with the numbers 1 through 6 is rolled. Find the probability of rolling a number greater than 2.
  35. Math

    Write an algebraic expression. Let n= the number. The cube of a number and 5. ( hint: cubed means the exponent 3)
  36. high school

    Is there a formula or general for finding the number of segments that can be named by a given number of points on a line?
  37. Math

    construct a factor tree for the given number. Then write out the prime factorization of the number 392, 190, 39 & 52
  38. math

    in the experiment of rolling a pair of dice, compute the probability of an even number or a number greater than 3 facing up
  39. math

    A standard number cube with the numbers 1 through 6 is rolled. Find the probability of rolling a number greater than 4
  40. 5th grade math

    If you roll two number cubes numbered 1-6, what is the probability of rolling the same number on each cube?
  41. ALGEBRA 1 help

    If three times a number is decreased by 5, the result is 7. Find the number. IS THIS RIGHT ? 3x -5 = 7 +5 +5 __________ 3x = 12 ___ ____ 3 3 x=4 IS THIS CORRECT
  42. Science

    An atom has a mass number 53 and an atomic number of 26. How many neutrons does it have? Include a formula that explains your calculation.
  43. math

    when a cross tile is placed on a number plane the centre number is the average of al the numbers covered. Explain why
  44. math

    Hello, i would like to know what is the complex number of : (a*c*d)×(-e*d+i)/(1-e*c*d^2) ACDE are strictly positive real constants. I is an imaginary number. Thanks you a lot for you help.
  45. Math

    By picking a natural number randomly up to 100 find the probability of the number being a perfect cube
  46. Math ~ Check Answers ~

    A number cube with the numbers 1 through 6 is rolled. Find P (number is greater than or equal to 3). a.) 4/6 b.) 1/6 c.) 2/6********** d.) 5/6
  47. Chemisry

    What is the nuclear charge of S^2- ion? (mass number=32). Also calculate the number of electrons, protons, and neutrons in it.
  48. math

    Mr. Steve, thank you very much to answer my question on Sunday, 23 August at 1:44 pm. But please, show me how to get : Number 1 : 1. D = -1 Dx = -2 Dy = -3 Number 2 : 2. D = -5 Dx = -14 Dy = -3 Because the steps to know that is important for me. Please...
  49. mathmetic

    if 4th power of pojetive real number 3.215 find the number,also veriphy your answer.
  50. algerbra 1

    Define a variable and write an algebraic expression for each phrase. the diffrence of 8 and a number the product of 2 and a number
  51. math

    Do you think that the formula where n is a whole number, will produce a prime number more than 50% of the time? Give evidence to support your conclusion.
  52. Applied Math

    How would I set this up to work? When a number is divided by 5 and the quotient is increased by 8, the result is 16. Find the number.
  53. math

    ruben is thinking of a number x.if he multiplies the number by 5 and then subtracts 12 from the product, the answers he gets is equal to 3 times x. what is x?
  54. backwards math

    Valerie tells Robbie, "I'm thinking of a number between 1 and 50. If I divide the number by 4, then add 5, then subtract 6, I get 6.
  55. maths

    find the product of the largest 5_digit number and and the smallest 4_digit number formed by the digits 2,1,0,4
  56. chemistry

    show that the mass number and the number of protons are conserved in the following nuclear equation: 234 230 4 92 U-----> 90 th + 2 he
  57. Maths

    By picking a natural number randomly up-to 100.find the probability of the number being a perfect cube?
  58. geometry

    What equation will express the relationship between the number of side, s, and the number of lines of symmetry, l, in a regular polygon
  59. math

    a frog sat on a number line, it was on the number 18. it made two equal hops and anded at 0. where did it land first?
  60. math

    the ratio of the number of people at dinner to the number invited was 106:100. Express this as a percent
  61. coordinate algebra

    Which equation describes the proportion: The number of chickens (c) is four times as many the number of horses (h) on the farm.?
  62. Math

    Translate the sentence into an inequality. Six increased by the product of a number and 10 is at most −16 . Use the variable x for the unknown number.
  63. Maths

    A certain number is halved, then increased by 3. The result lies between 5 and 7. Between which two values does the number lie? Write an inequeality for this?
  64. Math

    One number is 10 less than twice a second number.Find a pair of such numbers so that their product is as small as possible. x-10 2x 2x(x-10) 2x^2-20x -(-20/2(2))=5 2(5)^2-20(5) 50-100=-50 I think I am really lost
  65. bio

    What is the difference between an atom and an element? What are atoms composed of? What is the significance of atomic number and mass number.
  66. math

    If you have ten numbers and the alphabet on a key board what is the probibilty that a number will be picked first a letter second and a number third
  67. 7th grade math vocabulary

    The number of ways 6 people can sit in 6 chairs is the number of________________.
  68. flowchart and psuiodocode

    make a program that will input 6 numbers and output the highest number and the lowest number
  69. math

    Do you think that the formula where n is a whole number, will produce a prime number more than 50% of the time? Give evidence to support your conclusion.
  70. Math 6 grade

    If you need to find the percent of a number, explain how you can predict whether the part will be less than, greater than, or equal to the number. HELP PLEASE
  71. Probability(math)

    How many computer passwords can be created with three digits followed by three letters if the first number cannot be 0 or no number or letter can be repeated?
  72. grade 7 math factors

    you can decide if 10 is a factor of a whole number without dividing the entire number by 10 true / false
  73. chemistry

    State everything you know about the following atoms. Do NOT assume that they are balanced or neutral. Atomic number = 98 Mass number = 101
  74. maths

    make a true number sentence by filling in the missing number 14 +(3x2)= _________ (14 + 3)x2 = _______
  75. Math

    I have $46.20 in my pocket in $2, $1, 50c, 20c, 10c and 5c coins, and I have an equal number of each coin type. That number is?
  76. math

    translate to an algebra statement. seven times the difference of six and twice a number yields the same result as the same number decreased by one
  77. Math

    Why is raising a number to the power of 1/2 the same as finding the square root of the number? Can someone please help. Please provide examples. I would appreciate it if you guys can help as soon as possible.
  78. algebra

    Translate to an algebraic expression. The product of 44% and some number. Use y to respresent some number. Type the percentage as a decimal.
  79. Math

    When Adding A Negative Number On A Numberline You Move Left On the Number Line. True Or False
  80. math

    Only one number is spelled in the English language with its letters in alphabetical order. What is the number? Is the correct answer eight?
  81. math analysis

    i don't know what to start. Given a number espilon >0, prove there exists a natural number x such that 1/x <espilion
  82. physical science

    identify the mass number and atomic number of a chlorine atom that has 17 protons and 18 neutrons?
  83. algebra

    Town has popultion of 5,000.Number of people infected after t days with a disease is N(t) = 5000/1 + 21.7e^-0.4t Find number initially infected find number infected after 12 days
  84. calculus

    In a lab experiment 8 grams of acid were produced in 28 minutes and 17 grams in 47 minutes. Let g be the number of grams and m be the number of minutes. Find a linear equation that you could use to calculate g for any number of minutes.
  85. math

    In a lab experiment 8 grams of acid were produced in 28 minutes and 17 grams in 47 minutes. Let g be the number of grams and m be the number of minutes. Find a linear equation that you could use to calculate g for any number of minutes
  86. math

    eric has a baseball card collection in 3 albums. the smalles number of cards in an album was 54. the greatest number of cards was 72. what is the total number of cards eric has in his collection
  87. math

    in a lab experiment 8 grams of acid were produced in 28 minutes and 17 grams in 47 minutes. Let g be the number of grams and m be the number of minutes. Find a linear equation that you could use to calculate g for any number of minutes
  88. Math

    Determine if the number is written in scientific notation. If not, explain; 3 x 100⁻⁶. A. No; it is not written as a power of 10. B. No; the first factor is not a number between 1 and 10. C. Yes; the number is written in scientific notation. I'm almost 200% the answer is A
  89. Math

    If the decimal in the number 4157.98 is moved one place to the right the number will become-
  90. Chemisty

    Give the number of significant figures in the following number? 2.300*10^-4
  91. algebra

    The percent of increase is 16%. The new number is 522. What was the original number?
  92. math

    Eduardo thinks of a number between 1 and 20 that has exactly 5 factors. what number is he thinking of?
  93. math

    Eduardo thinks of a number between 1 and 20 that has exactly 5 factors. What number is he thinking of?
  94. calculus

    For what positive numbers will the square of a number exceed twice the number?
  95. math

    i am a number between 20 and 30. when you put me into 6 equal groups, there is an even number in each group
  96. Math

    Which group names all the whole number factors of a composite number? A) 2,3,12,24 B) 1,5,10 C) 1,3,5,15 D) 1,31
  97. Math

    A number is selected from 5 t0 14 inclusive.what is the probability that it is either an even number or a factor of 40
  98. math

    I think of a number double it and add 14. The result is 36. What is the number? With working
  99. Math

    6 times the difference of a number and 9 is 18 less than the number. I need to write out as an equasion. Help!
  100. math

    I think of a number double it and add 14. The result is 36. What is the number? With working
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