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 Quadratic_Equations/352114: Solving Radical Equations (quadratic) I am given a right triangle. One leg is a=7mm and the hypotenuse is c=7.4mm. It says to find the length of the unknown side b of the given right triangle and to also give the exact length and a one decimal place approximation.1 solutions Answer 251579 by Fombitz(13828)   on 2010-10-05 09:37:26 (Show Source): You can put this solution on YOUR website!Is it a right triangle?
 Linear-equations/351979: y=7/2x+4 1 solutions Answer 251570 by Fombitz(13828)   on 2010-10-05 08:54:49 (Show Source): You can put this solution on YOUR website! . . . What's the question?
 Distributive-associative-commutative-properties/352095: 2 x 56 x 51 solutions Answer 251568 by Fombitz(13828)   on 2010-10-05 08:49:06 (Show Source): You can put this solution on YOUR website! . . So, Was that your question?
 Polynomials-and-rational-expressions/351984: what is x/x-1-3/x=1/21 solutions Answer 251565 by Fombitz(13828)   on 2010-10-05 08:45:30 (Show Source): You can put this solution on YOUR website! Use a common denominator . . . . . . . . For the fraction to equal zero, the numerator must equal zero, Two solutions: . . .
 Exponents-negative-and-fractional/352103: Hello! My problem is finding all real solutions with the following equation I put 6 on the other side so it turns into I can't combine the two terms so I ended up subtracting -5x^(2/3) from both sides to get: Then I will take the power 3/4th to both sides so X on the left is by itself. Which will simplify to: This is where I get stuck. I have a feeling I screwed up somewhere. Can you please help me? Thank you. -Kayte.1 solutions Answer 251564 by Fombitz(13828)   on 2010-10-05 08:35:45 (Show Source): You can put this solution on YOUR website!No, the key to this problem is to recognize that it's a quadratic equation in disguise. Use a substitution. Let , then , then becomes Then you solve for the solutions to by factoring, completing the square, or quadratic formula. Then once you have , back substitute and find .
 Evaluation_Word_Problems/351985: Solve the following by substitution: x + y = 0, 3x + 3y = 4. What are the slopes of the above lines ? Change the second equation in problem 1 to 3x + 2y = 4. Solve by substitution. 1 solutions Answer 251560 by Fombitz(13828)   on 2010-10-05 08:26:41 (Show Source): You can put this solution on YOUR website!1. 2. From eq. 1, Substitute into eq. 2, Since your equations lead to an inconsistency, there is no solution. The lines are parallel. The slope of eq. 1 is The slope of eq. 2 is . . . . . . . 1. 2. From eq. 1, Substitute into eq. 2, Then from eq. 1, . . .
 Mixture_Word_Problems/352057: To conduct a new experiment, a scientist needs a 33% salt water solution. How much of a 20.5% solution must be mixed with 30 quarts of a 38% solution to get the proper solution?1 solutions Answer 251559 by Fombitz(13828)   on 2010-10-05 08:19:50 (Show Source): You can put this solution on YOUR website!Let be the amount of 20.5% solution. quarts
 Exponential-and-logarithmic-functions/352078: Solve the differential equation 1/y^2 y' =2x Find the special solution which satisfies the condition y(0)=1 PLLLSSS I NEED IT NOW :( THANKS YOUUU!1 solutions Answer 251557 by Fombitz(13828)   on 2010-10-05 08:16:07 (Show Source): You can put this solution on YOUR website!Oh well if you need it now. . . . Integrate both sides. Use the initial condition to solve for C. . . .
 Bodies-in-space/352034: what length should the edge of a cone have to be for the cube to be able to hole the contents of a sphere with a 4cm diameter1 solutions Answer 251519 by Fombitz(13828)   on 2010-10-05 00:21:00 (Show Source): You can put this solution on YOUR website!The volume of a sphere is, Now what do the cone and the cube have to do with holding the volume of the sphere???
 Linear_Equations_And_Systems_Word_Problems/352045: Jim has gotten scores of 81 and 67 on his first two tests. What score must he get on his third test to keep an average of 75 or greater?1 solutions Answer 251518 by Fombitz(13828)   on 2010-10-05 00:18:01 (Show Source): You can put this solution on YOUR website!Let be his next score.
 Distributive-associative-commutative-properties/351813: Hi, The question is 10x+18=48 they want to know to know if you add 4 to each side of the equation HOW do you know that the two sides of the equation are still equal. plzzzz help thanks, Ryan1 solutions Answer 251516 by Fombitz(13828)   on 2010-10-05 00:16:10 (Show Source): You can put this solution on YOUR website!That's a fundamental rule of mathematics. if , then .
 Linear-equations/351828: how do you solve each system of simultaneous equations by using the substitution method. x+y=3 3x+2y=91 solutions Answer 251515 by Fombitz(13828)   on 2010-10-05 00:11:24 (Show Source): You can put this solution on YOUR website!1. 2. From eq. 1, Substitute into eq. 2, Then from eq. 1,
 test/351885: Y=-1/2(x+1)(x-5)1 solutions Answer 251513 by Fombitz(13828)   on 2010-10-05 00:09:15 (Show Source): You can put this solution on YOUR website!What's the question??
 Polynomials-and-rational-expressions/352049: How do i multiply (y^2-4)(4y^2-5y+4)?1 solutions Answer 251512 by Fombitz(13828)   on 2010-10-05 00:08:40 (Show Source): You can put this solution on YOUR website!Use the distributive property,
 test/351854: (2xy-2)*7x Please show steps Thank you so much1 solutions Answer 251510 by Fombitz(13828)   on 2010-10-05 00:06:43 (Show Source):
 Inverses/351879: can some one tell me the inverse operation of 32/n=81 solutions Answer 251509 by Fombitz(13828)   on 2010-10-05 00:05:24 (Show Source): You can put this solution on YOUR website!??
 Linear-equations/351877: How to find the slope from a Graph1 solutions Answer 251508 by Fombitz(13828)   on 2010-10-05 00:04:28 (Show Source): You can put this solution on YOUR website!Pick two points and mark their coordinates (,) and (,). The slope, , is then,
 Exponents/351941: a to the 3 power + a to the t power=1 solutions Answer 251507 by Fombitz(13828)   on 2010-10-05 00:02:10 (Show Source):
 Linear_Equations_And_Systems_Word_Problems/352041: khalid makes an investment at 4% simple interest. At the end of the 1 yr, the total value of the investment is \$1560. How much was originally invested?1 solutions Answer 251505 by Fombitz(13828)   on 2010-10-04 23:59:58 (Show Source): You can put this solution on YOUR website! \$1500 was originally invested.
 Travel_Word_Problems/351963: a plane on a search mission flew east from an airport, turned , and flew west back to the airport. the plane cruised at 200 km/h when flying east and 300 kn/h when flying west. if the plane was in the air for 6 hours, how far from the airport did it travel?1 solutions Answer 251504 by Fombitz(13828)   on 2010-10-04 23:57:22 (Show Source): You can put this solution on YOUR website!Rate*Time=Distance East: 1. West: 2. Total time: 3. From eq. 1, From eq. 2, Substitute into eq. 3, km
 Polynomials-and-rational-expressions/351955: how do you work this problem (m^2-1)/(m-1)^2*(2m-2)/(3m+3)1 solutions Answer 251502 by Fombitz(13828)   on 2010-10-04 23:52:33 (Show Source): You can put this solution on YOUR website!Look for common factors.
 Miscellaneous_Word_Problems/352039: A pound of cashews is \$8 and A pound of peanuts is \$4. Twenty-five pounds of cashews are to be mixed with peanuts to make a mixture that will sell for \$5 per pound. How many pound of peanuts should be used? 1 solutions Answer 251501 by Fombitz(13828)   on 2010-10-04 23:49:15 (Show Source): You can put this solution on YOUR website!DUPLICATE See Miscellaneous_Word_Problems/352033
 Radicals/351995: how do i simplify.. radical 28 + 4 radical 63 - 2 radical 71 solutions Answer 251499 by Fombitz(13828)   on 2010-10-04 23:48:19 (Show Source):
 Miscellaneous_Word_Problems/352033: A pound of cashews is \$8 and A pound of peanuts is \$4. Twenty-five pounds of cashews are to be mixed with peanuts to make a mixture that will sell for \$5 per pound. How many pound of peanuts should be used?1 solutions Answer 251498 by Fombitz(13828)   on 2010-10-04 23:45:16 (Show Source): You can put this solution on YOUR website!Let be the number of pounds of peanuts in the mixture. lbs
 Equations/352037: What is the largest and smallest roots of f(x)=4(x+27)^2-51 solutions Answer 251496 by Fombitz(13828)   on 2010-10-04 23:42:28 (Show Source): You can put this solution on YOUR website! . . .
 Quadratic_Equations/352006: this is a rational equation Z+x + 5z +z Zx^2 z^2x 1 solutions Answer 251495 by Fombitz(13828)   on 2010-10-04 23:39:03 (Show Source): You can put this solution on YOUR website!There is no equal sign so it's not an equation. Please re-post.
 Numbers_Word_Problems/352023: Find two consecutive even integers such that four times the first is three times times the second.1 solutions Answer 251494 by Fombitz(13828)   on 2010-10-04 23:38:02 (Show Source): You can put this solution on YOUR website!The integers are and . The integers are and .
 Miscellaneous_Word_Problems/352032: How many liters of water must be added to 20 liter of 12% brine solution to dilute it to an 8% solution?1 solutions Answer 251493 by Fombitz(13828)   on 2010-10-04 23:36:45 (Show Source): You can put this solution on YOUR website!Let A be the liters of pure water (0% solution) added. liters.
 Distributive-associative-commutative-properties/351977: I need help with this problem. "Distribute and Solve": j(3j^3/12j) = 25. I'm not looking for just the answer. I would like to know how to solve it step by step please. Thank you!1 solutions Answer 251491 by Fombitz(13828)   on 2010-10-04 23:34:47 (Show Source):
 Expressions-with-variables/351971: how do you solve the equation 12-7.y=-2. 1 solutions Answer 251490 by Fombitz(13828)   on 2010-10-04 23:32:16 (Show Source):
 Linear_Algebra/351940: I was given a problem and am having difficulty setting up the problem. We have a square sheared beam and know the temperatures along the four sides of the beam. We must use the average temperates in order to estimate the internal temperature distribution in that beam using linear algebra. We made a diagram and a grid system showing internal points T1, T2, T3, and T4 where each is and average of the surrounding points. The diagram looks like a grid of 9 boxes which make up one large square. The four corners of the large square have no data points. Every other intersection has a value assigned to it. The top two intersections have values of 20, meaning that the top surface is 20 degrees, the left intersections have values of 10, the right 40 and the bottom 30. The internal intersections are labeled T1, T2, T3, T4 read left to right from top to bottom. I have four equations as follows, but then I am stuck. T1 = (10+20+T2+T3)/4 T2 = (T1+20+40+T4)/4 T3 = (10+T1+T4+30)/4 T4 = (T3+T2+40+30)/4 In some manner, I have to rearrange these equations in order to put them into a matrix and solve.1 solutions Answer 251455 by Fombitz(13828)   on 2010-10-04 20:50:07 (Show Source): You can put this solution on YOUR website! . . . . . . . . . . . . [A]= [T]= [b]= . . . [A][T]=[b]