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 Question 7474: How to solve this quadratic equation by completing the square x^2 + 6X - 7 = 0 Click here to see answer by longjonsilver(2297)

 Question 7496: An object is projected upward from the top of a tower. Its distance in feet above the ground after t seconds is given by s(t)=-16t^2+64t+80. How many seconds will it take to reach ground level? Click here to see answer by ichudov(499)

 Question 7619: I think i basicly have this one. But could you try it to check my work. Thank you. Graph the quadratic function. y=16-x^2, state the domain and range. Click here to see answer by longjonsilver(2297)

 Question 7689: Here is the problem. I tried several ways but I'm probably way off. Swimming pool. The length of a rectangular swimming pool is 2x - 1 meters, and the width is x + 2 meters. Write a polynomial that represents the area. Find the area if x is 5 meters. So, this is what I did. (2x - 1)(x + 2) (10-1) (5 + 2) 9 * 7 = 63 Area = 63 meters OR...... (2x - 1)^2(x + 2)^2 (10-1)^2 (5 + 2)^2 9^2 * 7^2 81 * 49 Area = 3969 meters (I think this one is wrong) OR..... using FOIL (2x -1) (x + 2) 2x^2 + 4x - x - 2 2x^2 + 3 - 2 2x^2 + 1 2(5)^2 +1 Area = 51 meters OR.... Multiplying vertically 2x - 1 x + 2 4x - 2 2x^2 +x 2x^2 + 5x - 2 50 + 25 - 2 Area = 73 meters I tried, please tell me if I'm close. Thanks so much in advance for your help. I really appreciate it. Click here to see answer by Earlsdon(6294)
 Question 7689: Here is the problem. I tried several ways but I'm probably way off. Swimming pool. The length of a rectangular swimming pool is 2x - 1 meters, and the width is x + 2 meters. Write a polynomial that represents the area. Find the area if x is 5 meters. So, this is what I did. (2x - 1)(x + 2) (10-1) (5 + 2) 9 * 7 = 63 Area = 63 meters OR...... (2x - 1)^2(x + 2)^2 (10-1)^2 (5 + 2)^2 9^2 * 7^2 81 * 49 Area = 3969 meters (I think this one is wrong) OR..... using FOIL (2x -1) (x + 2) 2x^2 + 4x - x - 2 2x^2 + 3 - 2 2x^2 + 1 2(5)^2 +1 Area = 51 meters OR.... Multiplying vertically 2x - 1 x + 2 4x - 2 2x^2 +x 2x^2 + 5x - 2 50 + 25 - 2 Area = 73 meters I tried, please tell me if I'm close. Thanks so much in advance for your help. I really appreciate it. Click here to see answer by prince_abubu(198)

 Question 7782: A rectangular playground is being constructed using a barn as one side and 80 meters of fencing to form the other three sides. What is the maximum area of such an enclosure? Click here to see answer by prince_abubu(198)

 Question 7801: Could you please help me with this problem ? Sunset rents an SUV at \$21.95 plus \$0.23 per mile. Sunrise rents the same vehicle for \$24.95 plus \$0.19 per mile. For what mileage is the cost the same? Hint: Using "m" for miles and "c" for cost, write one equation for each rental company. Click here to see answer by prince_abubu(198)

 Question 7871: If line k passes through the point (7,1) and is parallel to the graph of the line whose equation is y= 4x - 3, then what would the equation be? Click here to see answer by Earlsdon(6294)

 Question 7938: The equation 3y+7x=4 best describes which of the following: -Point -Parabola -Line -Circle Explain your reasoning Click here to see answer by longjonsilver(2297)

 Question 8347: I do not understand how to do the Quadratic Equation r2(squared) + 10r + 9 =0 Click here to see answer by bonster(299)

 Question 8458: A retailer spent \$48 to purchase a number of special mugs. Two of them were broken in the store, but by selling each of the remaining mugs for \$3 above the original cost per mug, she made a total profit of \$22. Construct an equation that will allow is to solve for the number of mugs, denoted by n, that were originally purchased. Click here to see answer by srinivas123(23)

 Question 8498: How do you solve a quadratic equation by factoring when it isn't equal to 0? Problem 1:2x^2+5x=3 Problem 2:3x^2=6x Click here to see answer by Earlsdon(6294)

 Question 8493: How do you solve a quadratic equation that doesn't have a part C? Equation: 3x^2-8x=-2 Click here to see answer by Earlsdon(6294)

 Question 8547: My brother is having a problem solving the problem: [(x^3)+(3x^2)-(4x)+3] / (x+1) I've been working on it for like a half an hour now -- but I'm having a hard time remembering how to do it. Do you have any hints - or could you help me out? Thanks. -Julie Click here to see answer by glabow(165)

 Question 8566: I am wondering if i did this problem correctly, I was suppose to complete the sqaure. 4x^-4x=-15, the answer i came up with was...x=4+-2i Square root 11 over 4 Click here to see answer by Earlsdon(6294)

 Question 8582: ok i have 2 problems how do you solve both of these equations without any decimals or irrational answers? Click here to see answer by rapaljer(4667)

 Question 8591: I have two problems that I am stuck on. 1. 5z^2 - 4z + 1= 0 this is how I started. 5z^2 - 4z = -1 5z^2 4z + 4 = -1 + 4 (z-2)^2 = -3 z-2 = plus or minus i the square root of -3 2 + - i / 5 I dont even know if this is correct. 2. 5t^2 + 4t - 3 = 0 5t^2 + 4t = 3 5t^2 - 4z + 4 = 3 - 4 (t + 2)^2 = -1 t + 2 = =/- -1 then I'm lost. Any help would be greatly appreciated. Thank you. Click here to see answer by rapaljer(4667)

 Question 8494: For the quadratic equation 3x^2=7-2x I decided to subtract 3x^2 from both sides of the equation and came up with 0=-3x^2+7-2x and then from there I solved the equation using the quadratic formula. Is that the correct way to solve this equation? Click here to see answer by rapaljer(4667)

 Question 8627: What is the value of the discriminant and also the nature of the roots of the equation Click here to see answer by glabow(165)

 Question 8961: I am having trouble with FOIL, and was wondering if you could tell me how to get the answer to (9a-7)(9a + 7) Thanks, Kyle Pruden Click here to see answer by longjonsilver(2297)

 Question 9067: How do you solve these two word problems, I need some HELP! 1. Bart can complete his science task twice as quickly as Carl can. When they work together, the task takes 3 hours. How long would it take Carl to do the work alone? 2. 3. The ratio of women to men in a certain club is 3 to 2. If there are 24 male club members, then how many female club members are there? Click here to see answer by longjonsilver(2297)

 Question 9065: I really need help with these two questions, these math questions are frustrating me. 1) In case of a quadratic function, why are there two x-intercepts and one y-intercept? 2) What is the meaning of “axis” in regards to a quadratic function? Click here to see answer by longjonsilver(2297)

 Question 9210: The square of the largest of three consecutive integers is equal to the sum of the squares of the other two. Find the integers Click here to see answer by khwang(438)

 Question 9336: what are the intercepts in this problem x^2 + x -2 Click here to see answer by rapaljer(4667)

 Question 9360: A two-digit number is such that the product of its digits is 12.When 36 is added to this number, the digits interchange their places.Find the number. Click here to see answer by longjonsilver(2297)