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 76164: What is the equation for the line passing through the points (7,-8) and (-4, -4)? Click here to see answer by jim_thompson5910(28595)

 Question 76275: Use the ac test to determine which of the following trinomials can be factored. Find the values of m and n for each trinomial that can be factored. x(squared) - 3x +7 thanks Click here to see answer by Edwin McCravy(8909)

 Question 76287: New chapter/Homework problem. Set up and Solve equation using the zero-factor property. Word problem. thanks! A ladder forms a right triangle with the ground and one wall of a building. the base of the triangle is 5 feet less than the height. If the area of the triangle is 18 square feet, find the height? Click here to see answer by tutorcecilia(2152)

 Question 76288: Pleas show me how to solve the equation using the zero-factor property. thanks! Z(Z+27)=5(3Z-7) Click here to see answer by Cintchr(481)

 Question 76285: Please show me how to solve the equation using the Zero-factor property. Thanks! X^2+4x-21=0 Click here to see answer by tutorcecilia(2152)

 Question 76260: Find a value for k so that 9m(squared)- kn(squared) will have the factors 3m + 7n and 3m - 7n. thanks Click here to see answer by wodkit02(9)

 Question 76282: Geometry. If the sides of a square are decreased by 2 cm, the area is decreased by 36 cm2. What were the dimensions of the original square? thanks. Click here to see answer by checkley75(3666)

 Question 76310: Factor the following polynomial. 3x(*SQUARED) - 15x + 18 couldnt make the 2 smaller so wrote it out should be written as "three x squared minus fifteen x plus eighteen Click here to see answer by checkley75(3666)

 Question 76321: A rectangular painting with a width of x centimeters has an area of x^2 + 50x square centimeters. Find a binomial that represents the length. Click here to see answer by stanbon(57361)

 Question 76322: The amount of an investment of P dollars for t years at simple interest rate r is given by A = P + Prt. a) Rewrite this formula by factoring out the greatest common factor on the right hand side. b) Find A if \$8300 is invested for 3 years at a simple interest rate of 15%. Click here to see answer by stanbon(57361)

 Question 76380: CAN SOMEONE CHECK THIS PLEASE? FUNGICIDES ACCOUNT FOR 1/10 OF THE PESTISIDE USED IN THE USA. INSECTICIDES ACCOUNT FOR 1/4 WRITE RATIO TO THE SIMPLEST FORM. 1/10 DEVIDED BY 1/4 = 1/40 Click here to see answer by Earlsdon(6287)

 Question 76390: can i get help adding and subtracting 2x^2+3x over x^2-2x-63 plus 7-x over x^2-2x-63 minus x^2-3x+21 over x^2-2x-63 = Click here to see answer by chitra(359)

 Question 76392: Write the missing value in each perfect trinomial. ?t^2+12t+9 4w^2-?w+81 Click here to see answer by chitra(359)

 Question 76379: Y=A/X 2< or = X < or = 6 4/3 < or = Y < = B A=? B=? I have that x=4 Click here to see answer by bucky(2189)

 Question 76395: Have tried many ways to factor this: 25x^3y-78x^2y^2+9xy^3= I hope one of you helps me with this. Thanks. Click here to see answer by bucky(2189)

 Question 76401: I need to factor the following and provide pairs of factors and sums of factors I don't quite get the text book X with exponential of 2 +8x+15 Click here to see answer by bucky(2189)

 Question 76433: Can someone Solve the equation using the zero factor property? Thanks! 25y^2+4=20y Click here to see answer by bucky(2189)

 Question 76432: Can someone Solve the equation using the zero factor property? Thanks! 25y^2+4=20y Click here to see answer by ankor@dixie-net.com(15656)

 Question 76437: I really need help in solving this problem, I have tried but I can't get the correct answer, I came up with 4,000^10 and it was incorrect so can someone please help me? The problem is, The Great Pyramid at Giza is one of the largest and oldest man-made structures in the world. It weighs over kilograms. If each stone making up the pyramid weighs approximately 4000 kilograms, how many stones make up the structure? Write your answer in scientific notation. Thank You, Sabrina Click here to see answer by scott8148(6628)

 Question 76487: The following trinomial is in the form ax^2 + bx + c. Find the two integers that have a product of ac and a sum of b. Do not factor the trinomials. 15t^2 - 17t - 4 Click here to see answer by Edwin McCravy(8909)

 Question 76497: How do I express as a Polynomial? x(x+2)+3(3x-5) Click here to see answer by Cintchr(481)

 Question 76498: How do I express as a polynomial? (x-4)(2x+3) Click here to see answer by Cintchr(481)

 Question 76506: How do I factor the polynomial of x^2-5 ? Click here to see answer by jim_thompson5910(28595)

 Question 76483: Use grouping to factor the polynomial. x^3 + ax + 3a + 3x^2 Click here to see answer by Cintchr(481)

 Question 76510: How do I simplify: x^2-10x+25 over x^2 - 5x Click here to see answer by Cintchr(481)