Jackster

Most popular questions and responses by Jackster
  1. word problem

    Participants in a psychology experiment were able to memorize an average of M words in t minutes, where M = −0.001t3 + 0.1t2 Estimate the number of words memorizes after 14min where M=-0.001t^3 +0.1t^2

    asked on March 4, 2011
  2. algebra

    Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -5x – 7y = 25.5 -2x + 10y = -9

    asked on February 21, 2011
  3. math

    Simplify the following product of complex numbers. (8 + i) • (-4 – 3i)

    asked on March 2, 2011
  4. Math

    (5x ^3)^2(2x^7)

    asked on March 2, 2011
  5. Math

    Simplify the following expression, and rewrite it in an equivalent form with positive exponents. -14xy / 42x^5y^8

    asked on March 1, 2011
  6. Math

    Use scientific notation to divide the following two numbers. Express the answer using scientific notation; retain at least three decimal places. 6.2 • 107 / 4.15 • 103

    asked on March 1, 2011
  7. Math

    How do i solve using the elimination method. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

    asked on March 23, 2011
  8. math

    Raise the quantity in parentheses to the indicated exponent, and simplify the resulting expression. Express answers with positive exponents. (-33xy^-1/66x^0y^-3)2

    asked on March 2, 2011
  9. algebra

    Consider that the age, x, of a unicorn in human equivalent years can be given by the formula f(x) = - 0.001518x4 + 0.067326x3 – 1.4367x2 + 12.46x + 2.914. When a unicorn is 2.5 years old, what is its age in human equivalent years? What about when it is

    asked on March 8, 2011
  10. word problem

    Bob’s Barber Shop estimates their gross revenue for the second quarter to be given by the polynomial 8x3 – x2 – 2x + 4. The shop estimates their costs for that quarter to be given by x2 – 4x + 7. For the second quarter, find and simplify a

    asked on March 7, 2011
  11. Math

    adding (1/4x^2-1/6x-3/8)+(1/4x^2-1/4x-1/2)

    asked on March 6, 2011
  12. Word Problem

    Suzie’s flower shop estimates that supplies costs for one month will be given by the polynomial 5x2 + 4x – 7. She estimates that utilities costs for one month is given by 8x + 8. Find and simplify an expression that would estimate Suzie’s total costs

    asked on March 4, 2011
  13. Math

    Express the answer using scientific notation; retain all nonzero decimal places. (1.9 • 10^4) • (8.4 • 10^5)

    asked on March 3, 2011
  14. math

    Simplify the following quotient of complex numbers into the form a + bi. -8-8i/1+2i

    asked on March 2, 2011
  15. math

    Express the answer using scientific notation; retain all nonzero decimal places. (1.9 • 104) • (8.4 • 105)

    asked on March 2, 2011
  16. agebra

    simplify -14xy / 42x^5y^8

    asked on March 1, 2011
  17. algebra

    Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -3x + 6y = -3 / -6x + 4y = -10

    asked on February 21, 2011
  18. Inter algebra

    help, I am stuck on this one. -ã(7c)^2

    asked on March 1, 2011
  19. algebra

    3X/ X^(-1)

    asked on February 28, 2011
  20. math help

    A 125-ft diagonal brace on a bridge connects a support of the center of the bridge to a side support on the bridge. The horizontal distance that it spans is 25 ft longer that the height that it reaches on the side of the bridge. Find the horizontal and

    asked on March 22, 2011
  21. math

    Find the following product: (y-10)^2

    asked on March 13, 2011
  22. Math

    multiply and check (a^2+4)(5a^3-3a-1)

    asked on March 3, 2011
  23. Math

    ADD: (14.9a^3+3.2a^2-5.1a)+(2.1a^2-3.7a+4.6)

    asked on March 3, 2011
  24. Inter algebra

    Simplify the following expression, and rewrite it in an equivalent form with positive exponents. (10x-5)-5

    asked on March 1, 2011
  25. algebra

    How do i solve these kind of problems? -ã((7c)^2)

    asked on February 28, 2011
  26. Algebra

    (5x ^3)2(2x^7)

    asked on February 28, 2011
  1. algebra 2

    Find the quotient: 6x^3 + 5x^2 + 2x +1 / 2x +3

    posted on March 16, 2011
  2. Algebra

    Find the degree show all work: a^3b^8c^2 - c^22 + a^5c^10

    posted on March 11, 2011
  3. math

    How do I find the quotient of: 4x^2-9y^2 / 2x+3y

    posted on March 11, 2011
  4. college algebra

    -ã(7c)^2

    posted on March 1, 2011