coried

Most popular questions and responses by coried
  1. Algebra

    If a circle of radius 5 is made to roll along the x-axis, what is the equation for the path of the center of the circle?

    asked on August 11, 2009
  2. Algebra

    Word problem: Radiator in a certain make needs to contain 50 liters of 40% antifreeze. The radiator now contains 50 liters of 20% antifreeze. How many liters of this solution must be drained and replaced with 100% antifreeze to get the desired strength?

    asked on August 5, 2009
  3. Algebra

    Word problem: When making a phone call using calling card a call lasting 3 minutes costs $1.60. A call lasting 10 minutes costs $4.40. Let y be the cost of making a call lasting x minutes using a calling card. Write a linear equation that relates to the

    asked on August 11, 2009
  4. Algebra

    Word problem: Ken and Kara are 29 miles apart on a calm lake paddling towards each other. Ken paddles at 3 miles per hour. Kara paddles at 6 miles per hour. How long will it take them to meet?

    asked on August 5, 2009
  5. College Algebra

    Solve the system of equations using matrices. If system has no solution say its inconsistent. 6x + y = 5 3x - y + z - w = 8 z + w = 2 Solve the system of equations using Cramers Rule if applicable. 4x + 2y = 8/5 5x - 5y = 5

    asked on September 13, 2009
  6. College Algebra

    Solve the equation. e^5x = 2 a. 2/5 e b. in2/5 c. 5 in 2 d. in5/2

    asked on August 26, 2009
  7. College Algebra

    The function f is one to one. Find its inverse. f(x) = 8x^2 - 9, x>=0

    asked on August 26, 2009
  8. college algebra

    factor... (x+4)^-3/5+(x+4)^-1/5+(x+4)^1/5 Please explain the process used to solve this type of expression. Answer should be in equation form if that helps....

    asked on July 24, 2009
  9. Algebra

    The function f is one to one. Find its inverse. f(x) = 8x^2 - 9, x>=0

    asked on August 26, 2009
  10. Algebra

    When making a phone call using calling card a call lasting 3 minutes costs $1.60. A call lasting 10 minutes costs $4.40. Let y be the cost of making a call lasting x minutes using a calling card. Write a linear equation that relates to the cost of making

    asked on August 11, 2009
  11. Algebra

    find the center (h,k) and radius r of the circle with the given equation: x^2 + y^2 + 6x - 8y = 56

    asked on August 11, 2009
  12. Word Problem

    The surface area of a balloon is given by S(r) = 4(pie)r^2, where r is the radius of the balloon. If the radius is increasing with time t, as the balloon is being blown up, according to the formula r(t)=4/5t^3,t>=0, find the surface area S as a function of

    asked on August 26, 2009
  13. College Algebra

    Write expression as a single quotient (49-x^2)^1/2 + 3x^2(49-x^2)^-1/2 ________________________________ 49 - x^2

    asked on July 24, 2009
  14. Algebra

    What is the domain of the function f(x)=sqrt(x^4-16)? In interval notation. Please show me how to work this problem out. I cannot find any examples in my book. Thanks!

    asked on August 18, 2009
  15. Algebra

    find the center (h,k) and radius r of the circle with the given equation: x^2 + y^2 + 6x - 8y = 56

    asked on August 11, 2009
  16. college algebra

    simplify result leave in factored form 1-7/x _____ 1+7/x

    asked on July 24, 2009
  1. College Algebra

    typo those answers contain L's not I's

    posted on August 26, 2009