1. algebra ,

    8th grade homework: 3 digits, divisible by 5, odd number, product of the digits is 15, sum of the digits is less than 10 and it less than 12 by 12.

    asked by mbali on January 17, 2016
  2. Geometry

    The sum of the interior angles of polygon is 1800. Find the number of sides in the polygon and, what do you call that polygon?

    asked by Anal-G on January 20, 2011
  3. Calculus

    Consider an infinite series of the form (+-)3(+-)1(+-)1/3(+-)1/9(+-)1/27(+-)....(+-)1/3^n(+-)... The number 3,1, etc. are given but you will decide what the signs should be. a)Can you choose the signs to make the series diverge? B)Can you choose the signs

    asked by oci on November 12, 2012
  4. Algebra 2

    The sum of a few numbers if 30, the first number is 2 less than the second, and the third is 4 less than the first. What are the order of numbers and what are the numbers? This is a post by one of my classmates that I'm supposed to solve. I'm probably

    asked by Fading on November 10, 2016
  5. MATHS

    THREE NUMBERS ARE IN AP AND THEIR SUM IS 24 IF THE FIRST NUMBER IS DECREASED BY ONE SECOND NUMBER IS DECREASED BY TWO THEN THE NEW NUMBERS ARE IN GP FIND THE NUMBERS

    asked by LINGARAJ on October 24, 2017
  6. Algebra

    Question 2 w=10, what is the answer to w+(w-12÷2^2•3)•7 73 66 23 17* Question 3 14-3•4÷6 14 12* 6 3 Question 4---which algebraic expression represents the following:the sum of four times a number and six? 4(x+6) 4(x•6)* 4x+6 x+4•6

    asked by Katy on August 8, 2018
  7. Ratio

    Three numbers are in the ratio of 3:5:7. If the largest number is multiplied by 3, the result is 26 more than the sum of the first and second numbers. Find the numbers.

    asked by Camile on February 10, 2010
  8. Math

    Translate and simplify "six less than twice the sum Of a number and three. I was not sure how to set it up Is it 2(x+3)-6 Or would it be set up 2x+3-6 I can solve it once I know how to set up the equation. Confused. Thanks for your help

    asked by Em on January 20, 2013
  9. Simple math

    Two standard number cubes are thrown. Given that one of the cubes shows a five, what is the probability that the sum of the numbers that come up on the two cubes is five?

    asked by Heanna on April 13, 2015
  10. Simple Math

    Two eight-sided number cubes are thrown. Given that one of the cubes shows a five, what is the probability that the sum of the numbers that come up on the two cubes is six?

    asked by Jessica on February 1, 2013
  11. math

    The difference between the simple interest and compound interest on a certain sum for 2 years at the rate of 5% per annum is rupees 205.find the sum.

    asked by priya on December 24, 2017
  12. maths

    The sum of the first n terms of an exponential series is 364. The sum of their reciprocal is 364/243. If the first term is 1,find n and the common ratio.

    asked by dannystein on January 27, 2016
  13. Math

    The sixth term of an arithmetic progression is 265 and the sum of the first 5 terms is 1445. Find the minimum value of n so that the sum of the first n terms is negative.

    asked by azmeerahim on February 9, 2013
  14. Geometric progression

    sum of 4 terms of g p is 30 & sum of first and last term is 18 . Find gp a(r^4-1)/(r-1) = 30 a + ar^3 = 18 a(1+r^3) = 18 it's easy to see that if a=2, r=2 Does that work on S4? 2*15/1 = 30. Yes So, the GP is 2,4,8,16,... But sir I want not logic proof ,

    asked by Venkatesh on March 23, 2016
  15. geometric sequence

    The sum of the 2nd and 5th terms of a geometric sequence is 3.5. The sum of the 3rd and 6th is -7. Determine the ratio r of the sequence and the first term a.

    asked by h on September 28, 2014
  16. calculus

    Another problem: determine whether the series is convergent if so find sum it is the sum from k=1 to infinity of ((-1)^k)/(3^(k+1)) i found this series to be geometric where a=-1/9 and r=1/3 my answer was converges to 1/6

    asked by sarah on February 21, 2008
  17. math

    A lends Rs.2,500 to B and a certain sum to C at the same time at 7% p.a. simple interest. If after 4 years, A altogether receives Rs.1,120 as interest from B and C, then the sum lent to C is:

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

    A series of 288 consecutive odd integers has a non-zero sum that is a perfect fourth power. Find the smallest possible sum for this series.

    asked by Anonymous on November 8, 2016
  19. AP Statistics

    Italian gamblers used to bet on the total number of dots rolled on three six-sided dice. They believed the chance of rolling a nine ought to equal the chance of rolling a total of 10 since there were an equal number of different ways to get each sum.

    asked by Eggbert on April 5, 2018
  20. math

    Donovan spent some money on friday. He spent thrice as much money on saturday than on friday. He spent $20 on sunday. If he spent a total of $125 in the 3 days, how much did he spend on saturday?

    asked by Anonymous on September 24, 2010
  21. MATH

    11.) A company produces a product for which the variable cost is $12.30 per unit and the fixed costs are $98,000. The product sells for $17.98. Let x be the number of units produced and sold. a.) the total cost for a business is th sum of the variable cost

    asked by Sam on September 10, 2015
  22. math

    The sum of the first 10 terms of an arithmetic series is 145 and the sum of its fourth and ninth term is five times the third the..determine the first term and constant difference

    asked by zandile on March 7, 2013
  23. maths

    A sum of money borrowed at a particular rate of interest amounts of Rs 8320 in 2years and Rs 9685 in 3 and half years.Find the sum borrowed.

    asked by boilen on July 27, 2016
  24. Calculus

    Evaluate each telescoping sum: 1) Sum from i = 1 to 100 of (5^i - 5^(i-1)). I know that I could apply the (n(n+1))/2 summation rule to the 5^i part of the question and then plug in 100, but I am unsure what to do for the second half --> -5^(i-1)! Thank you

    asked by Lucy on January 9, 2015
  25. Math

    sum of money borrowed at a particular rate of interest amounts of Rs 8320 in 2years and Rs 9685 in 3 and half years.Find the sum borrowed

    asked by Netra on June 12, 2017
  26. arithmetic

    the sum of irst and the fourthterm of a linear squence is10 and the sum of its thired and seventh term is 20.find the common difference and the first term

    asked by Anonymous on October 9, 2011
  27. math

    determine the difference between the sum of the infinite geometric series 18-6+2-2/3...and the sum of the first 6 terms of the series (round to 3 decimal places) first i did S=18/ (1+1/3)= 13 1/2 Sn= 18(1+(1/3)^6) _____________ 1 + 1/3 = 13 14/27 13 1/2 -

    asked by s on November 18, 2008
  28. Mathematics

    A sum of money is to be divided among A,Band C in the ratio 2:3:5.The smallest share amounts to $600.Calculate the total sum of money to be shared.

    asked by cutebaby on November 15, 2017
  29. PRE CAL SEQUENCES

    Given the following finite sum 1/(1*2)+1/(2*3)+1/(3*4)+1/(4*5)+....+1/(n(n+1)) a) Find the first 5 partial sums b) Make a conjecture for a formula for the sum of the first n terms c) Use mathematical induction to prove your formula

    asked by jack on April 13, 2010
  30. math

    A pair of dice are rolled and the sum on their upturned faces is recorded. What is the probability that the sum showing is 8, given that one die is showing a 5?

    asked by t on December 16, 2009
  31. Algebra

    The difference of the cubes of two consecutive odd positive integers is 400 more than the sum of their squares. Find the sum of the two integers.

    asked by John on March 4, 2013
  32. Algebra

    The difference of the cubes of two consecutive odd positive integers is 400 more than the sum of their squares. Find the sum of the two integers.

    asked by John on March 4, 2013
  33. Math

    A pair of dice are rolled and the sum on their upturned faces is recorded. What is the probability that the sum showing is 8, given the one die is showing a 5?

    asked by Patti on August 5, 2009
  34. math

    The difference of the cubes of two consecutive odd positive integers is 400 more than the sum of their squares. Find the sum of the two integers.

    asked by nice on March 10, 2013
  35. Algebra

    The difference of the cubes of two consecutive odd positive integers is 400 more than the sum of their squares. Find the sum of the two integers.

    asked by John on March 8, 2013
  36. math

    A pair of dice are rolled and the sum on their upturned faces is recorded. What is the probability that the sum showing is 8, given that one die is showing a 5?

    asked by Codi on December 14, 2009
  37. posibility

    A pair of dice are rolled find the following, a) the probability of doubles, b) the odds in favor of a sum greater than 2, c) the probability of sum that is even and less than 5

    asked by Katarzyna on November 27, 2012
  38. Math

    Natatile has 138 DVD's and 419 CD's. If yu were to estimate the sum of the DVD's and CD's, what sentence could you write? Then find your estimated sum.

    asked by Amy on October 26, 2016
  39. math

    A pair of dice are rolled find the following, a) the probability of doubles, b) the odds in favor of a sum greater than 2, c) the probability of sum that is even and less than 5

    asked by Andrzej on November 27, 2012
  40. math

    A pair of dice are rolled find the following, a) the probability of doubles, b) the odds in favor of a sum greater than 2, c) the probability of sum that is even and less than 5

    asked by Andrew on November 27, 2012
  41. Math help Ms. Sue please

    1. What is the simplified form of the expression? 7m^2 + 6.5n - 4n + 2.5m^2 - n 9.5m^2 + 1.5n 4.5m^2 + 1.5n 1.5m^2 - 4.2n 9.5m^2 - 1.5n 2. What is the sum? 9/4 + (-1/5) 41/20 -41/20 -1/3 8/20 3. Order the following numbers from least to greatest. √7,

    asked by Charlotte on September 19, 2013
  42. Calc 2

    Use the ratio or the root test to determine the convergence of the series: Sum of infinity and n=1 of arctan(e^-n), Sum of infinity and k=1 of sqroot(3^k)/(2^k)

    asked by Bae on April 7, 2014
  43. math

    An arithmetic progression has 2 as its first term. find its common difference if the sum of 33 terms is equal to six times the sum of 13 terms

    asked by greatmam on January 30, 2016
  44. math

    A pair of dice are rolled and the sum on their upturned faces is recorded. What is the probability that the sum showing is 8, given that one die is showing a 5?

    asked by Aleah on October 1, 2009
  45. math

    1)find the sum of the odd integers from 25 to 75 2)find the sum of the first 20 terms in the series 10+5+2.5+1.25... . please show the steps to solve the problem^_^

    asked by sarah on April 22, 2013
  46. Math

    Use the distributive property of multiplication over addition to rewrite the sum as a product of two factors, where one of the factors is a sum. A) 4(5a^2 - 4 - 2a) B) a(20a^2 - 16a - 8) C) 4(5a^ - 4a - 2) D) 4a(5a - 16 - 8a)

    asked by Meg on November 23, 2009
  47. algebra!

    The difference of the cubes of two consecutive odd positive integers is 400 more than the sum of their squares. Find the sum of the two integers.

    asked by Anonymous...urgent! on March 4, 2013
  48. sir steve reiny plz maths

    Suppose you have 5 real numbers whose sum of squares is equal to 5. What is the maximum value of the sum of cubes of these 5 numbers? Please show step

    asked by danu on May 6, 2017
  49. mATH

    A pair of dice are rolled and the sum on their upturned faces is recorded. What is the probability that the sum showing is 7 given that one die is showing a 4?

    asked by katelynn on October 17, 2009
  50. math

    A pair of dice are rolled find the following, a) the probability of doubles, b) the odds in favor of a sum greater than 2, c) the probability of sum that is even and less than 5

    asked by Katarzyna on November 27, 2012
  51. math

    The sum of interior angels and the sum of exterior angles of polygon are in the ratio 9:2.find the sides of regular polygon.

    asked by rohit on December 18, 2015
  52. calculus

    determine whether the series is convergent if so find sum it is the sum from k=1 to infinity of ((-1)^k)/(3^(k+1)) i found this series to be geometric where a=-1/9 and r=1/3 my answer was converges to 1/6

    asked by sarah on February 22, 2008
  53. algebra- integer problems

    Hi! i have this problem, I'm stuck on. it says find 2 consecutive multiples of 9 whose sum is -153. I started of my saying the 1st number is 9x and the 2nd is 9x+9. I continued on to get, 9x+(9x+9)=-153 and solved it. I got an irrelevant answer: -9. I was

    asked by min on November 15, 2007
  54. Statistics (Box Method)

    I have two questions where I keep getting the last parts (question #1 [e], question #2 [f]) wrong. I have all the other answers right so I'm not sure what I am doing wrong with these two. I went ahead and wrote all the parts down as well as the answers and

    asked by Lilly on June 30, 2018
  55. Pre Algebra

    1.Which of the following numbers is an example of an integer? A -15** B 3/5 C √7 D 0.252525... 2.Which statement is false? A every integer is a real number. B the number zero is a rational number.** C every irrational number is a real number. D every

    asked by Cammie on September 24, 2017
  56. Math

    I have more i don't understand?? Use the distributive property of multiplication over addition to rewrite the sum as a product of two factors, where one of the factors is a sum. 14) 6yz - 54y A) 6y(z - 9) B) 6y(z - 54) C) 6y(z + 9) D) 9y(z - 6) explain

    asked by Lisa on March 16, 2010
  57. math probability

    Two friends were each rolling a die. After they rolled, they found the sum of the numbers showing on each die. What is the probability that the sum is 7? I added the sides together and simplified to get 1/6, but I don't think that's right.

    asked by Anna on April 8, 2016
  58. MATH

    the fist term of a geometric series is 1, the nth term is 128 and the sum of the n term is 225. Find the common ratio and the number of terms?

    asked by Alleyah on August 1, 2015
  59. Math.... again......!!!!!!...

    A fraction is equivelant to 4/5. The sum of the numerator and the denominator of the fractionis 36. What is the fraction? The fraction is 4x/5x where x is a number. You have that 4x + 5x=36, so solve for x, then you have what 4*x is and 5*x. The answer for

    asked by Nini on November 20, 2006
  60. Re: Finance

    Thanks, Economyst. What formula did you use to calculate 17.53117? I found a formula that I thought would work to get that sum, but I got a different number. The formula is: 1 - 1.1^(-10)/ 0.1 and also: (40000* 163)/17.53 = $371933 is the answer?

    asked by John on September 29, 2008
  61. Chemistry

    This is a three part problem I need help in figuring out pleaseI n each of the questions below you are going to determine a different type of balanced equation for the same reaction. Make sure your equations have the lowest whole number coefficients

    asked by Melinda on October 11, 2012
  62. Chemistry

    This is a three part problem I need help in figuring out pleaseI n each of the questions below you are going to determine a different type of balanced equation for the same reaction. Make sure your equations have the lowest whole number coefficients

    asked by Melinda on October 11, 2012
  63. Probability

    1. When two fair dice are tossed, what is the probability of a sum of 4 or a sum of 8? 2. When two fair dice are tossed, what is the probability of doubles or a sum over 9? 3. Evaluate 1025! / 1022! Please help

    asked by Hannah on May 11, 2011
  64. Probability NEED HELP

    1. When two fair dice are tossed, what is the probability of a sum of 4 or a sum of 8? 2. When two fair dice are tossed, what is the probability of doubles or a sum over 9? 3. Evaluate 1025! / 1022! Please help

    asked by Hannah on May 12, 2011
  65. Maths progression

    In an AP whose first term is 2,the sum of first five term is one fourth the sum of the next five terms.show that T20=-112. Find S20.

    asked by Mickey on August 12, 2015
  66. math

    find two fractions with a sum that is greater than 1.6 but less than 1.9. write your fractions in simplest form and compute their exact sum.

    asked by nita on January 15, 2013
  67. Math

    What is the common difference of an arithmetic sequence if the sum of the second and fourth terms is 0, and the sum of the sixth and eighth terms is 12?

    asked by Anonymous on December 27, 2010
  68. math

    5. In a geometric sequence, the sum of the first five terms is 44 and the sum of the next five terms is -11/8. Find the common ratio and first term of the series.

    asked by dini on August 7, 2016
  69. math

    The second term of a GP is 81 and the fourth term is 9. Find, (i) the common ratio, (ii) the sum of the first terms, (iii) the sum to infinity.

    asked by Et khaw on August 9, 2014
  70. Mathematics

    If the sum of 3th and 8th terms of an A.p is 7 and the sum of 7th and 14th term is -3,find the 10th term .

    asked by Anonymous on September 1, 2017
  71. math

    buy two coats for the sum of $77 the product of the purchase is $1440 what is the cost of each coat both the sum and the product must be involved

    asked by taylor on January 28, 2009
  72. Math

    Use the distributive property of multiplication over addition to rewrite the sum as a product of two factors, where one of the factors is a sum. 20^a^2 - 16a - 8

    asked by Katey on November 21, 2009
  73. Math

    A sum of money is divided between three people in the ratio 1:2:1/2. If the smallest share amounts to $48, what is the total Sum of money?

    asked by Lolai on November 13, 2016
  74. singapore math

    Using these numbers to fiqure the problem. (120,30,90,60,50,40,160,80) The sum of two numbers is 190. What would the answer be? And the sum of their digits is 10.

    asked by lori on November 4, 2012
  75. Math fractions

    kate is using fraction strips to add 4/10 and 4/5 she uses one whole strip to represent the sum. how many fifths strips does she need to complete the sum?

    asked by Marcy on November 22, 2016
  76. math

    Two non-negative numbers are chosen such that their sum is 30. Find the numbers if the sum of their squares is to be a maximum. Explanation to solve this would help !

    asked by David on April 11, 2013
  77. Math - Please Help

    Find two positive fractions such that if we switch the denominators, the sum afterthe switch is 50 times the original sum.

    asked by qwerty123 on February 10, 2011
  78. A.P

    The sum of 16th term is 240,the sum of the next four terms is 220.Find the first term and the common difference.

    asked by Whake on May 3, 2016
  79. calculus

    Determine whether the series is convergent o divergent and say what test you used to solve it. (d) sum n=1 to infinity (5n)^(3n) / (5^n + 3)^n (e) sum k=1 to infinity 5 / sqr(2k - 1)

    asked by Paul on September 21, 2012
  80. math

    the sum of the first four terms of a geometry series is 15 and the sum of the next 4 terms is 240.determine the positive constant ratio.

    asked by niky on February 17, 2015
  81. C++

    1. while(c 0 ) sum = sum + z; 3. x = 1; while (x

    asked by Anonymous on October 20, 2010
  82. Mathematics

    The sum of the 1st and 2nd terms of an AP is 4 and the 10th term is 19. Find the sum of the 5th and 6th terms

    asked by Amaka on March 13, 2015
  83. Maths

    Difference between the compound interest and the simple interest on a certain sum for 2 years at 6% per annum is rupees 90 .find the sum

    asked by Ashis kumar Bera on November 5, 2017
  84. math

    The sum of the first 20 terms of an arithmetic series is identical to the sum of the first 22 terms. If the common difference is -2, find the first term.

    asked by lindsay on July 17, 2014
  85. math

    find each sum 65+18 How can you regroup ones in this sum?

    asked by esha on December 6, 2010
  86. MATHS

    in A.P the sum of the last five terms is 85 and the 4th is 9.what is the sum of the A.P?

    asked by Anonymous on December 4, 2013
  87. calculus

    If the nth partial sum of an is sn=(3n-2)/(n+1) what is an when x>1? and what is the sum of an?

    asked by NADIA on January 28, 2014
  88. math

    If # (w,x,y,z) means you multiply the sum of w and x by the sum of y and z, and # (2,3,4,z)=40,then z = a. 5/3 b. 2 c. 4 d. 5 e. 8

    asked by peter on December 18, 2013
  89. Math

    How do you rename 2/5 so you can add it to 11/25? What is the sum? What is the sum of 5/30 + 4/6

    asked by Sicka on February 10, 2016
  90. math

    If #(w,x,y,z)means you multiply the sum of w and x by the sum of y and z, and #(2,3,4,z)=40, then z= a. 5/3 b. 2 c. 4 d. 5 e. 8

    asked by peter on December 15, 2013
  91. Calculus

    Determine whether the series is convergent or divergent. If it is convergent, find its sum. If it is divergent, enter NONE. sum from 1 to infinity of (5^n+4^n)/20^n It is convergent, but I do not know how to find the sum.

    asked by Sandy on April 3, 2014
  92. math

    Hi 2 math questions: 1. Is the sum of the same as adding the two numbers? the ? the sum of 14 and 16 2. Is the quotient the same as dividing.. the ? the quotient of 114 and 6 Sum is adding, quotient is dividing.

    asked by claire on August 30, 2005
  93. Math(Algebra)

    How would you set this problem up and work it: The difference between two numbers is 16. Three times the larger number is seven times the smaller. What are the numbers? This one also: The differnce between two numbers is 18. The sum of twice the smaller

    asked by Lily on February 8, 2012
  94. Geometry

    The sum of four numbers is 771. The ratio of the first to the second is 2:3. The ratio of the second to the third is 5:4. The ratio of the third to the fourth is 5:6. Find the second number.

    asked by greendayangel21guns on March 7, 2013
  95. math

    the sum of the reciprocal of two number is 1/2 twice the reciprocal of the sixth less than five times the reciprocal of the 2nd. what are the original #?

    asked by divine on January 29, 2016
  96. math

    The sum of all five terms of an arithmetic sequence is 55. Find the sum of the first three terms of the sequence if the sum of the last three is 48.

    asked by asd on November 27, 2015
  97. math- Patterns... i tried it many times..HELP!!!!

    1) The number times a dog barks is dependent on the number of passing cars. How many cars have passed when a dog barks 34 times? If 20 cars pass, how many times will the dog bark? Explain how you got to your answers? 2) The fourth term of a sequence is 4

    asked by Susie ... HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! on September 16, 2008
  98. Probability Pþease helpp

    Tina randomly selects two distinct numbers from the set {1, 2, 3, 4, 5}, and Sergio randomly selects a number from the set {1, 2, . . . , 10}. The probability that Sergio’s number is larger than the sum of the two numbers chosen by Tina is ?

    asked by maria on November 24, 2011
  99. Probability PLEASE HELP

    Tina randomly selects two distinct numbers from the set {1, 2, 3, 4, 5}, and Sergio randomly selects a number from the set {1, 2, . . . , 10}. The probability that Sergio’s number is larger than the sum of the two numbers chosen by Tina is ?

    asked by maria on November 24, 2011
  100. math

    Two number cubes are rolled—one red and one black. Explain why the events “the red cube shows a 6” and “the sum is greater than or equal to 10” are dependent, and find the probability. answer please :) i don't get this question

    asked by Maitha on November 25, 2011