Questions on Algebra: Polynomials, rational expressions and equations answered by real tutors!

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 Algebra: Polynomials, rational expressions and equations Solvers Lessons Answers archive Quiz In Depth

 Question 76560: Solve the equation with a repeated factor: m^3 + 2m^2 - 3m = 0 Click here to see answer by checkley75(3666)

 Question 76559: Solve the equation using the zero factor property. 2w(4w+1)=1 Click here to see answer by rmromero(383)

 Question 76570: Harry invested \$12,000 in a new restaurant. When the restaurant was sold 2 years later, he received \$27,000. Find his average annual return by solving the equation 12,000(1+r)^2 = 27,000. Click here to see answer by stargrl12566(16)

 Question 76558: Each of the three dimensions of a cube with a volume of y^3 cubic centimeters is decreased by a whole number of centimeters. If the new volume is y^3 - 13y^2 +54y - 72 cubic centimeters and the new width is y-6 centimeters, then what are the new length and height? Click here to see answer by ankor@dixie-net.com(15747)

 Question 76569: While finding the amount of seed needed to plant his three square wheat fields, Hank observed that the side of one field was 1 kilometer longer than the side of the smallest field and that the side of the largest field was 3 kilometers longer than the side of the smallest field. If the total area of the three fields is 38 square kilometers, then what is the area of each field? Click here to see answer by ankor@dixie-net.com(15747)

 Question 76598: Write using positive exponents, and simplify if possible. (–3x)^–2 Thank you. Click here to see answer by checkley75(3666)

 Question 76596: If the sides of a square are decreased by 3 cm, the area is decreased by 81 cm^2. What were the dimensions of the original square? Thank you. Click here to see answer by checkley75(3666)

 Question 76595: Factor completely. 6x^2 – xy – 5y^2 thanks Click here to see answer by checkley75(3666)

 Question 76591: Factor completely. 6b^4 – 18b^3 – 60b^2 thanks Click here to see answer by checkley75(3666)

 Question 76590: The diameter of the Milky Way disc is approximately 9 x 10^20 meters. How long does it take light, traveling at 10^16 m/year to travel across the diameter of the Milky Way? thanks Click here to see answer by checkley75(3666)

 Question 76597: What is the degree of the polynomial x^12 – 5x^4? Thank you. Click here to see answer by jim_thompson5910(28717)

 Question 76594: Find the GCF of the product. (3b + 6)(2b – 10) thanks Click here to see answer by jim_thompson5910(28717)

 Question 76604: Find the GCF of the product. (3b + 6)(2b – 10) thank you. Click here to see answer by checkley75(3666)

 Question 76620: 2(x^2 + 2x + 1) + 3(x^2 + 3) Expand and simplify,distributive property Click here to see answer by stargrl12566(16)

 Question 76616: distributive property,expand and simplify this question 3x + 2(5x - 3) the textbook "Math power NINE" page. 94-95 ISBN:0075498901 Click here to see answer by stargrl12566(16)

 Question 76611: can you help me solve this problem square root of 2x + 8 - square root of 2x + 1 = 1 Click here to see answer by ankor@dixie-net.com(15747)

 Question 76648: can you teach me how to do a rational equation and check it? x/6-x/8=1 Click here to see answer by bucky(2189)

 Question 76649: I need to solve for x. I believe the answer if 4 but I have no idea how to start. (2x-3/x-1)-(x-1/x+2)=(2x-5/x+2)+(2-x/1-x) Click here to see answer by psbhowmick(529)
 Question 76649: I need to solve for x. I believe the answer if 4 but I have no idea how to start. (2x-3/x-1)-(x-1/x+2)=(2x-5/x+2)+(2-x/1-x) Click here to see answer by bucky(2189)

 Question 76614: distributive property,expand and simplify this question 3x + 2(5x - 3) the textbook "Math power NINE" page. 94-95 Click here to see answer by bucky(2189)

 Question 76656: Multiply. (4m-3n)(4m+3n) I am trying to multiply this and I can't seem to, I am not sure what I am doing wrong and need some help. Thanks so much. Click here to see answer by stargrl12566(16)

 Question 76657: Solve. X^2 = -6x. I am having a hard time with this problem and need some help. thanks. Click here to see answer by stargrl12566(16)

 Question 76655: Multiply. Write the answer in scientific notation. (2.4 * 10^-5)(4 * 10^-4) I am needing some help with this scientific notation, I am not understanding how to do this. Thanks. Click here to see answer by wodkit02(9)

 Question 76754: Science and medicine. A passenger train can travel 325 mi in the same time a freight train takes to travel 200 mi. If the speed of the passenger train is 25 mi/h faster than the speed of the freight train, find the speed of each. How do I do this? Click here to see answer by Edwin McCravy(8999)

 Question 76769: Let a and b be real numbers such that a does not equal zero. Find the solutions of ax^2 + bx = 0 PLEASE TRY UR BEST TO HELP ME!!! Click here to see answer by Earlsdon(6294)

 Question 76768: AARGH!!! WORD PROBLEMS!!!!!!! PLEASE HELP ME!!!!!! The Taj Mahal was built by the Indian ruler Shah Jahan as a tomb for his wife who died in 1629. The building is constructed of white marble and sits on a platform of red sandstone. Each corner of the platform has a minaret (tower) that is 133 feet high. The plaatform is about 140 feet wider than the main building. The total area of the platform is about 102400 square feet. Find the dimensions of the platform and the base of the building. (Assume each is a square.) I TOTALLY DON'T GET IT!! PLEASE ANSWER THIS WITH AN EXPLANATION... Click here to see answer by Earlsdon(6294)

 Question 76765: Science and medicine. The combined resistance of two resistors R1 and R2 in a parallel circuit is given by the formula Rt=1/1/R1+1/R2 Simplify the formula. Help please? Click here to see answer by Earlsdon(6294)

 Question 76737: Factor: 15 + 3y – 5x2 – x2y Click here to see answer by Poohbear272(22)
 Question 76737: Factor: 15 + 3y – 5x2 – x2y Click here to see answer by jim_thompson5910(28717)

 Question 76763: I HATE WORD PROBLEMS!!!!!!! ... please help me! section: solving quadratic equations by factoring Question: to weigh a male elephent seal, a biologist lures them to cross a special scale by pulling a model female seal. the rectangular scale in the photo is 8 feet longer than it is wide. the scale has an area of 33 square feet. what are the dimensions of the scale? Click here to see answer by Nate(3500)

 Question 76758: how can i simplify each complex fraction? w+3/4w/w-3/2w Click here to see answer by ankor@dixie-net.com(15747)

 Question 76777: can you show me how to solve for x? 2/5=x-2/20 Click here to see answer by checkley75(3666)

 Question 76742: The directions say factor the trinomial if possible. 6b squared-11b-2 Click here to see answer by jim_thompson5910(28717)

 Question 76827: a hammer is dropped from a construction project 576 ft above the ground. the height h(in ft) of the hammer is mideled by the position equation h(t)=-16t^2+ 576 where t is the time i seconds. how long will take for the hammer to reach the ground? Click here to see answer by Edwin McCravy(8999)

 Question 76828: Can someone show me how to write the rational expression in lowest terms? r-13/13-r Click here to see answer by bucky(2189)

 Question 76838: Can someone show me how to write the rational expression in lowest terms? f(X)=2x+4/3x^2+11x-42 Click here to see answer by funmath(2925)

 Question 76836: Can someone show me how to write the rational expression in lowest terms? 3s^2-9st-54t^2/3s^2-6st-72t^2 Click here to see answer by funmath(2925)