college math

posted by .

I do not understand a problem from a text book or how to solve the problem for the answer. Could shomeone show me the steps (show work) on how to solve this question.

The sum of the intergers from 1 through n is n(n+1)/2. the sum of the squares of the intergers from 1 through n is n(n+1)(2n+1)/6. The sum of the cubes of the integers from 1 through n is n squared(n+1)squared/4. Use the appropriate expressions to find the following values.
(A). The sum of the integers from 1 through 30.
(B) The sum of the squares of the integers from 1 through 30
(C) The sum of the cubes of integers from 1 through 30.
(D) The square of the sum of the integers from 1 though 30.
(E) The cube of the sum of integers from 1 through 30.
I's sure its much easier than what I am making it out to be. I tried working the problems but am lost in what it' asking.

  • college math -

    They have given you the formulas for each of the question for A, B, and C

    I will do B
    Sum of squares from 1 to n
    = n(n+1)(2n+1)/6
    so the sum of the squares from 1 to 30, n=30
    just plug it in
    sum of squares = 30(31)(61)/6 = 9455

    do A and C the same way

    Once you have the answer for A,
    square that result for D
    cube the result for A to get E

  • college math -

    During a walk, Dave completed the first two miles at a pace of 3mph. He walked the next two miles at a pace of 4.5 mph. Would his walk take more, less or the samr time if he walked the entire distance of four miles at a steady pace of 3.5 mph?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. College Math II

    x/x – 1 - 3/x = 1/4 My problem says to show the work and to solve the equation. I am not sure how to use the steps to show my work and answer the problem. Thanks.
  2. College Math II

    Solve by any method. x(x + 1) = 12 I am not sure what method to use to show my work and figure out the answer. Can someone help me understand this problem. Thanks.
  3. College Math II

    Solve by any method. a^4 – 5a^2 + 4 = 0 I am having problems figuring out what method to use to solve this problem. I need to show my steps and I am not sure how to do this. Can someone help?
  4. College Math II

    Solve each problem. Find the quotient and remainder when x^2 – 5x + 9 is divided by x – 3. I don't understand how to divide and solve this problem. Can someone help me understand the steps on how to do it. Thanks.
  5. mat115

    Please help me with this math question. I am asked to show my work but I don't know how to solve the problem to show my work. The question is: Choose the correct list of factors of the number 8. Again, I have to show my work with this …
  6. college algebra

    solve the following inequality. write the answer in interval notation x^3-4x^2-21x<0 please show work so i can understand this problem better! thanks
  7. Math

    Could you show me how to work through this problem?
  8. Math (Help!)

    Note: Remember to show all of the steps that you use to solve the problem. Be sure to use the text box where the question mark (?
  9. Algebra 1

    Factor the expression. 27w^2-12 I don't have an answer, I don't understand the steps can someone show me the correct steps for this problem, and then I can solve it?
  10. Math 7 A

    Note: For questions 5 and 6, remember to show all of the steps that you use to solve the problem. Be sure to use the text box where the question mark (?

More Similar Questions