math, drbob222

For this problem is it only asking for the exprssion(formula). Or do they want me to solve it.

(1) A triangle has sides 3x+7,4x-9,and 5x+6. Find the expression that represents its perimeter.


My answer:P=a+b+c


I think the question is asking for the expression, but I would take that to mean that you substitute the values for the sides; i.e.,
P = 3x+7+4x-9+5x+6=12x+4
P=12x+4 is the expression for the perimeter. That isn't solving it for no value is given for x.

  1. 👍 0
  2. 👎 0
  3. 👁 125

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    I have a question about the formula for this problem:How many ways can an IRS auditor select 3 of 11 tax returns for an audit? I know that it is 11! / 3!(11-3)! But apparently I am doing something wrong because my answer is not

    asked by sam on September 23, 2009
  2. math 213

    The effect of depreciation can be computed using a formula similar to the formula for compound interest. a. Assume depreciation is the same each month. Write a problem involving depreciation and solve it. b. Develop a general

    asked by billy bob on April 19, 2010
  3. math

    evaluate this exprssion 3X^3+5x-10X^2-10X

    asked by pat on March 15, 2013
  4. chemistry

    I have been having a problem with solving a chemistry problem. The problem requires finding the density in copper at 1305K (the temperature changes when you reset the problem). I think I am using the proper formula,

    asked by Al on November 17, 2013
  5. chemistry

    I have been having a problem with solving a chemistry problem. The problem requires finding the density in copper at 1305K (the temperature changes when you reset the problem). I think I am using the proper formula,

    asked by Al on November 17, 2013
  6. Math

    factorize the following using. formula #1 : (x+y)^3 = x^3+3x^2y+3xy^2+y^2 formula #2 : (x-y)^3 = x^3-3x^2y+3xy^2-y^2 Problem #1 : 8a^3+60a^2+150a+125 Problem #2 : 27x^3-27x^2y+9xy^2-y^3 please tell me how to solve them

    asked by rayan siddiqui on December 29, 2011
  7. chem

    how many milliter of .246 M HNO3 should be added to 213 ml of 0.00666 M 2,2'-bipyridine to give a pH of 4.19? please help, does this problem need to be solved with ka or kb?. Is 2,2'- bipyridine a base, this is the problem from my

    asked by bun on February 2, 2010
  8. chemistry

    A compound is found to be 51.39% carbon, 8.64% hydrogen, and 39.97% nitrogen. It has a molecular molar mass of 140.22 g/mol. (This question requires one to find the empirical formula to end up with the final answer in molecular

    asked by spartan on January 10, 2019
  9. Factoring Polynomials (need HELP!!!)

    Ok, this is pretty long, so bear with me. The problem says: The diagram (not shown here, sorry) shows a cube of metal with a cylinder cut out of it. The formula for the volume of a cylinder is V=pi*r^2*h, where r is the radius and

    asked by Emily on January 10, 2007
  10. finite math

    Using the formula for PV (present value) of an oridinary annuity or the amortization formula to solve this problem. PV=13000 I=.03% PMT=500 n=? I have done it over and over and can't it correct

    asked by carol on June 20, 2014

More Similar Questions