9th grade algebra

posted by Alexis

Evaluate the following expression given the function.

function: h(x)=12/x

problem: h(x) = -2
solution: -2 = 12/x.
1/12 * -2 = 12/x *1/12 (mulitply both sides by 1/12 to get x by itself.
-2/12 = 1/x
-1/6 = 1/x (simplified -2/12)

I don't think this is right. Can you explain how to get the 'x' out of the denominator?

  1. Steve

    don't be scared by that x. It's juts a denominator. To get rid of it, multiply both sides by x.

    Now, to find x when h = -2, just do what you did:

    12/x = -2
    now just multiply by x:

    12 = -2x
    x = -6

  2. Alexis

    Thanks! That was so much easier :).

Respond to this Question

First Name

Your Answer

Similar Questions

  1. math

    how would this equation look: y=f(x+3) when y=f(x)= x^2 would it look like so.... x^2(x+3) adam, there's a slight problem with your notation in the expression y = f(x+3). Ordinarily we wouldn't put an expression in place of a variable, …
  2. algebra

    1 1 7 -y - -= - 2 8 8 please help me! It isn't clear to me what this expression means. Can you clarify it?
  3. Algebra

    That is not what the ? is asking. The ? is asking about how to get the quotient function, not the composite as you solved for. Can you please show us how to get the quotient function solution?
  4. 9th grade Math

    (7n-1)/(8)=6 Okay, I think I add 1 to both sides, so now I have.. (7n)/(8)=7 And then, to get n by itself I divide 7 into both sides, so now I have.. n/8=1 n=1 is what I get, but I'm not sure, could someone please check this for me?
  5. mat 116 algebra

    function and function notation using the variable x and explain how we evaluate a function for a given x

    A 5.0 cm diameter coil of 20 turns with a resistance of 0.50 Ù is in a time-varying magnetic field which is perpendicular to the coil and is given by the expression; B = 0.010t2 + 0.020t, where B is in tesla and t is in seconds. a) …
  7. economics

    Consider a consumer who has an experienced utility function given by . Let denote the market price of good , and assume that it remains fixed throughout the problem. The company selling the good starts an advertisement campagin that …
  8. Pre Calculas

    Im really struggling and need help with this 1. One of the tables below contains (x,y) values that were generated by a linear function. Determine which table, and then write the equation of the linear function represented by the Table …
  9. Pre Calculas

    7. For the function defined by: f(x)= {x^2, x<=1} {2x+1, x>1} a. evaluate f(0) 8. Solve the following system of equations algebraically. Verify your solution either graphically or by using matrices. 3x-y=0 5x+2y=22 9. Solve the …
  10. Algebra 2 Honors

    A stone is dropped from a height of 100 feet. The time it takes for the stone to reach a height of h is given by the function t = 1/4 √(100 - h) , where t is the time in seconds. Identify the domain and range of the function, and …

More Similar Questions