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# Recent problems solved by 'JBarnum'

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 Angles/344135: TR bisects if =4x+12 and =9x-13, then find x and the measure of all three angles 1 solutions Answer 246216 by JBarnum(2044)   on 2010-09-16 17:37:19 (Show Source): You can put this solution on YOUR website!Bisecting means that it splits the angle directly in half so the 2 new angles made have the same measure . =4x+12 =32 . =9x-13 =32 . =64
 Angles/344132: P is the interior of 1 solutions Answer 246210 by JBarnum(2044)   on 2010-09-16 17:20:06 (Show Source): You can put this solution on YOUR website!ok this isnt very clear where is "l" located, i get TED and inbetween angle TED is P to make PED or TEP but where is the "l" and 5+4 is 9 unless there was suppose to be an "x" variable...please write your question clearly and correctly. thanks.
 test/344112: Evaluate | -10d + a | A= -1. D= -14 1 solutions Answer 246203 by JBarnum(2044)   on 2010-09-16 17:06:01 (Show Source): You can put this solution on YOUR website! subtitute and solve |-10(-14)+(-1)| |140+(-1)| |139|
 Expressions-with-variables/344115: If the body mass index is 25 or higher, then you are at a higher risk for heart disease.The Ca1 solutions Answer 246198 by JBarnum(2044)   on 2010-09-16 16:57:49 (Show Source): You can put this solution on YOUR website!not a question
test/344108: 5x-3 (x-4) = 6x+4
1 solutions

Answer 246197 by JBarnum(2044)   on 2010-09-16 16:57:04 (Show Source):
You can put this solution on YOUR website!

 Solved by pluggable solver: SOLVE quadratic equation with variable Quadratic equation (in our case ) has the following solutons: For these solutions to exist, the discriminant should not be a negative number. First, we need to compute the discriminant : . Discriminant d=661 is greater than zero. That means that there are two solutions: . Quadratic expression can be factored: Again, the answer is: 5.47099202643649, 0.329007973563512. Here's your graph:

 test/344086: Undefined and defined 1 solutions Answer 246177 by JBarnum(2044)   on 2010-09-16 16:17:13 (Show Source): You can put this solution on YOUR website!"In mathematics, defined and undefined are used to explain whether or not expressions have meaningful, sensible, and unambiguous values. Whether an expression has a meaningful value depends on the context of the expression. For example the value of 4 − 5 is undefined if a positive integer result is required." please see: http://en.wikipedia.org/wiki/Defined_and_undefined or http://en.wikipedia.org/wiki/Well-definition If you want a tutor to answer a question please specify your questions.
 test/344082: Your question goes here. Write clearly! We are not mind readers, so be sure to ask a question that we can understand.1 solutions Answer 246174 by JBarnum(2044)   on 2010-09-16 16:12:39 (Show Source): You can put this solution on YOUR website!why are you writing this here we are the tutors...waste of time. write a lesson or turorial not ask us a question.
 test/344083: Your question goes here. Write clearly! We are not mind readers, so be sure to ask a question that we can understand.1 solutions Answer 246173 by JBarnum(2044)   on 2010-09-16 16:11:49 (Show Source): You can put this solution on YOUR website!why are u writing this here we are the tutors...waste of time. write a lesson or turorial not ask us a question.
 test/344067: Hii. Working on algebra two word problems and it so frustraiting! 1)ace rent a car charges a flat fee of \$15 and \$0.24 a mile for their cars. Acme rent a car charges a flat fee of \$29 and \$0.14 a mile for their cars. Use the following model to find out after how many miles ace rent a car becomes more expensive then acme rent a car. 1 solutions Answer 246166 by JBarnum(2044)   on 2010-09-16 16:04:22 (Show Source): You can put this solution on YOUR website!whats "the following model?" cause i dont see anything in this submission A=ace C=Acme mi=mile we want to know when A>C so this means that at 141 miles Ace will cost more than Acme to check simply plug in the number for above equations A=48.84 at 141 miles C=48.74 at 141 miles
 Angles/344064: angle A is 18 more than five times its complement angle B1 solutions Answer 246157 by JBarnum(2044)   on 2010-09-16 15:44:45 (Show Source): You can put this solution on YOUR website!Complementary angles add up to 90 A=18+5B A+B=90 Check Correct
 Angles/344061: angle A is 21 less than twice as large as its supplement angle B1 solutions Answer 246152 by JBarnum(2044)   on 2010-09-16 15:37:40 (Show Source): You can put this solution on YOUR website!supplement angles add up to 180 A+B=180 A=2B-21 "A is 21 less than twice as large as its supplement angle B" i dont know if ur looking for just the expression or trying to solve for each angle? Check Correct
 Expressions-with-variables/344058: don planted t fewer trees than franciso. francisco planted52 tress. write an expression that shows how many pennies qilson has now 1 solutions Answer 246142 by JBarnum(2044)   on 2010-09-16 15:17:37 (Show Source): You can put this solution on YOUR website!lol what are you sure you didnt write 2 diffrent questions together? D=don F=francisco D=F-t F=52 D=52-t But who is qilson and what pennies?
 Travel_Word_Problems/343464: A bicyclist travels at 10 miles per hour. How long will it take the bicyclist to travel 30 miles?1 solutions Answer 245780 by JBarnum(2044)   on 2010-09-15 13:37:20 (Show Source): You can put this solution on YOUR website! hours 10 mi / 1 hr total 30 miles
 Expressions-with-variables/335195: C=5/9(s-32) Solve for S 1 solutions Answer 240214 by JBarnum(2044)   on 2010-08-26 07:28:42 (Show Source): You can put this solution on YOUR website!multiply by 9/5 add 32
 Equations/331578: Geoff has a square bedroom. He measures one of the walls and finds it is 20 ft long. How many square feet are in his bedroom?1 solutions Answer 237661 by JBarnum(2044)   on 2010-08-13 11:41:22 (Show Source): You can put this solution on YOUR website!square room means all sides are the same if one side is 20 then all sides are 20 to find Area use area formula A=LW if and then
 Polynomials-and-rational-expressions/331561: Multiplty. (3√5-9√7)(2√5+6√7) 1 solutions Answer 237652 by JBarnum(2044)   on 2010-08-13 10:33:19 (Show Source): You can put this solution on YOUR website!foil multiply factor and cancel multiply subtract
 Polynomials-and-rational-expressions/331560: solve. (x+13)(x-10)(x+8)>0 1 solutions Answer 237649 by JBarnum(2044)   on 2010-08-13 10:19:21 (Show Source): You can put this solution on YOUR website!x+13>0 , x-10>0 , x-8>0 x>-13 ,x>10 ,x>8
 Radicals/331564: Simplify by taking roots of the numerator and the denominator. Assume that all expressions under radicals represent positive numbers. ∛125x^14/y^31 solutions Answer 237648 by JBarnum(2044)   on 2010-08-13 10:16:15 (Show Source): You can put this solution on YOUR website!again, please write the correct equation...this can mean different possibilities i will solve as u have imputted it(means 3rd root of x)
 Polynomials-and-rational-expressions/331557: Perform the indicated operations and simplify. z-4/z-5-z+1/z+5+z-15/z^2-25 1 solutions Answer 237645 by JBarnum(2044)   on 2010-08-13 10:00:17 (Show Source): You can put this solution on YOUR website!please make sure u write the equation correctly since im having to guess what it looks like according to how you inputted the equation this is what it would look like however im pretty sure u meant this: factor common denom add fractions foil add like terms add like terms factor cancelation
 Miscellaneous_Word_Problems/331551: Suppose we have a pendulum that is “y” feet long. Our pendulum makes one complete swing in “t” seconds. Assume “y” and “t” are related by the formula y = .9 t2. If the pendulum is less than 4 feet long, what is the range of values for “t”? I really need help with this one I don't even know where to start.1 solutions Answer 237634 by JBarnum(2044)   on 2010-08-13 09:25:40 (Show Source): You can put this solution on YOUR website!from the looks of it u have an equation and you have what y = so: divide by .9 t=2.1082 or -2.1082 since we cant go back in time negative wouldnt be an answer so the time takes less than 2.1082 seconds range from [0 , 2.1082]
 Complex_Numbers/331548: 4x-8(x+2)=-4x-51 solutions Answer 237632 by JBarnum(2044)   on 2010-08-13 09:17:23 (Show Source): You can put this solution on YOUR website! no solution
 Polynomials-and-rational-expressions/331553: find the greatest common factor for the group of terms. -66a^4,11a^5 1 solutions Answer 237631 by JBarnum(2044)   on 2010-08-13 09:13:48 (Show Source): You can put this solution on YOUR website!11 goes into -66 and 11 a^4 goes into a^4 and a^5 factored looks like this ,
 Polynomials-and-rational-expressions/331554: find the greatest common factor for the group of terms. -66a^4,11a^5 1 solutions Answer 237630 by JBarnum(2044)   on 2010-08-13 09:12:57 (Show Source): You can put this solution on YOUR website!11 goes into -66 and 11 a^4 goes into a^4 and a^5 factored looks like this ,
 Radicals/331552: subtract. simplify by collecting like radical terms if possible. 7√32-7√2 1 solutions Answer 237628 by JBarnum(2044)   on 2010-08-13 09:10:02 (Show Source):
 Linear-equations/331547: What is the y-intercept of the line parallel to 2y = 3x + 8 and passing through (4, 16)?1 solutions Answer 237626 by JBarnum(2044)   on 2010-08-13 08:55:10 (Show Source): You can put this solution on YOUR website! keep the slope since its // substitute x and y, and replace 4 with b solve for b this is you y-intercept
 Age_Word_Problems/331545: find their present age x+y=42-jed y+z=59-Johnny x+z=53 joseph1 solutions Answer 237625 by JBarnum(2044)   on 2010-08-13 08:45:46 (Show Source): You can put this solution on YOUR website!?u have 6 variables and only 3 equations...u will not get actual ages, please submit the question u derived these equations from because im possitive these equations are incorrect. this is what i see: d=jed current age n=johnny current age h=joseph current age