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 Question 582187: The profit P, in dollars, gained by selling x computers is modeled by the equation P= -5x^2 + 1000x + 5000. Find the number of computers that must be sold to obtain a profit of \$55,000.00? Using the quadratic equation, I came up with the computer cost being \$41.42 then divided \$55,000 by that and came out with 1327.86 computers needed to be sold to obtain that profit of \$55,000. Please help. Diana Click here to see answer by stanbon(57219)
 Question 582187: The profit P, in dollars, gained by selling x computers is modeled by the equation P= -5x^2 + 1000x + 5000. Find the number of computers that must be sold to obtain a profit of \$55,000.00? Using the quadratic equation, I came up with the computer cost being \$41.42 then divided \$55,000 by that and came out with 1327.86 computers needed to be sold to obtain that profit of \$55,000. Please help. Diana Click here to see answer by dfrazzetto(277)

 Question 582586: How many and of what type are the solutions of a quadratic equation when the value of the radicand is -20 Click here to see answer by jim_thompson5910(28476)

 Question 582589: Where does the graph of y = 2x^2 − x − 3 cross the x-axis? A. (−, 0) and (3, 0) B. (, 0) and (−3, 0) C. (−, 0) and (1, 0) D. (, 0) and (−1, 0) Click here to see answer by jim_thompson5910(28476)

 Question 582617: Determine whether the graph of y = x^2 − 6x + 3 has a maximum or minimum point, then find the maximum or minimum value. Click here to see answer by stanbon(57219)

 Question 582722: ou drop a pencil out of a window that is 2o ft above the ground. Use the formula V squared = 64s, where V is the speed and s is the distance fallen, to calculate the speed the pencil is traveling when it hits the ground. Click here to see answer by josmiceli(9649)

 Question 582875: When using the quadratic formula to solve a quadratic equation in the form of ax^2 + bx + c, explain what would happen to b^2 when it is less than 4ac and 4ac is positive Click here to see answer by jim_thompson5910(28476)

 Question 583145: My paper says: Find the value of the discriminant for 9x^2+1=6x. Then describe the number and type of roots for the equation..... I already found the discriminant to be -72 i just dont know how to do the last part Click here to see answer by solver91311(16868)
 Question 583145: My paper says: Find the value of the discriminant for 9x^2+1=6x. Then describe the number and type of roots for the equation..... I already found the discriminant to be -72 i just dont know how to do the last part Click here to see answer by Alan3354(30959)

 Question 583502: PLEASE help me with this challenging problem!!! An indoor track is made up of a rectangular region with two semi-circles at the ends. The distance around the track is to be 400 meters. Determine the radius of the semicircular ends of the track in terms of y.Use the result to write and equation in terms of x and y for the distance around the track. Use your result from that to write the area A of the rectangular section as function of x.What dimensions for the rectangular region maximize the area (of the rectangular region)? Do not attempt to maximize the area for the whole figure!! Click here to see answer by Alan3354(30959)

 Question 583585: The product of 2 positive integers is 64. One is 4 times the other. Find the integers. Click here to see answer by JBarnum(2044)

 Question 583740: The manager of a peach orchard is trying to decide when to arrange for picking the peaches. If they are picked now, the average yield per tree will be 100 pounds, which can be sold for \$.40 per pound. However, past experience shows that if the manager postpones the harvest a bit, the yield per tree will increase by about 5 pounds per week but the price will decrease about \$.02 per pound per week. a) Construct a function which gives the revenue per peach tree. Be sure to state what your variables represent. Click here to see answer by ankor@dixie-net.com(15624)

 Question 584022: 12x^2-10x-42=0 I have to solve this quadratic equation two different ways and I need to show my work and explain what I am doing. I have no clue where to even start. I didn't even know there was two ways to solve this.....Any help please? Click here to see answer by KMST(1864)

 Question 584725: can you please answer this problem? Joey is 9 years older than Marivic. Six years ago, the product of their ages is 190. Find their present ages. I hope to hear you soon. thank you! Click here to see answer by JBarnum(2044)

 Question 584735: THE DIFFERENCE OF SQUARE OF TWO NUMBER IS 180 .THE SQUARE OF THE SMALLER NUMBER IS 8 TIMES THE LARGER NUMBER .FIND THE TWO NUMBERS? Click here to see answer by ankor@dixie-net.com(15624)

 Question 584968: write each quadratic equation in standard form. 1. y=3(x+2)squared-10 2.y= -(x+4)squared-1 3.y=(x-5)squared+2 my question is how do i solve these sorry about the "squared" i didnt know how to put the 2 up in the corner-- in squared form.. Click here to see answer by ankor@dixie-net.com(15624)

 Question 585018: c) Calculate the value of if the difference between the roots of x^2-6x+k=0 is 3. Click here to see answer by jim_thompson5910(28476)

 Question 584986: Suppose a particular star is projected from an aerial firework at a stating height of 520 ft with an initial upward velocity off 72ft/s. How long will it take for the star to reach its maximum height? How far will it be? The equation is h= -16t^2+ 72t +520 also, describe the importance of quadratics (one paragraph) and how quadratics helps people to understand something in the real world Click here to see answer by ankor@dixie-net.com(15624)

 Question 585020: given that a root is two times the other root of the quadratic equation 4x^2-18x=k=0. find the value of k Click here to see answer by ankor@dixie-net.com(15624)

 Question 585100: 6 ( ln l -3) - 4l n l +5 = 11 Click here to see answer by Alan3354(30959)

 Question 585163: A small painting has an area of 400 cm 2 . The length is 4 more than 2 times the width. Find the dimensions of the painting. Solve by completing the square. Round answers to the nearest tenth of a centimeter. Click here to see answer by josmiceli(9649)

 Question 584959: OK, first of all the problem that I need help with is P(x)=-x^2+110x-1,000. P being 5, 50, and 120. I think that if I can get help answering the five then I should be able to figure out the 50 and the 120 (I hope). I am going to college and totally lost so if you could help me with this problem I would greatly appreciate it. I also have to graph it when I am done, but like I said earlier if I can figure out the answer to P(x)=-x^2+110x-1,000 with P being 5 I should be able to get the rest. Click here to see answer by scott8148(6628)

 Question 585170: x² - 2x -35=0 solve each equation by competing the sqaure Click here to see answer by ankor@dixie-net.com(15624)

 Question 585215: An airplane has a total of 152 seats. The number of coach-class seats is five more than six times the number of first-class seats. How many of each type of seat are there on the plane? Write two equations using c to represent coach-class seats and f to represent first-class seats. Solve using elimination or substitution Click here to see answer by mananth(12270)

 Question 585432: ???? The Travel Time bus company has determined that when x tourists are given a particular bus tour, the profit P is given by P(x) = –0.25 x2 + 29.50x – 170 (a) What is the company’s profit if 42 tourists are given the tour? (b) How many tourists should be given the tour in order to maximize the company’s profit? Click here to see answer by nerdybill(6948)

 Question 585708: i have a question my teacher taught me to do these equations using -b over 2a the putting the product i got from that into the regular Ax+Bx+C=y equation then i would take whatever i got from tose two eqautions and graph them with the y-intercept my question is how do no if it shifts from left to right and how do i deal with fractions in these Click here to see answer by richwmiller(9135)

 Question 586056: How do you find the vertex of this equation? x^2+3x-4? Click here to see answer by jim_thompson5910(28476)

 Question 586812: how do you find the values of 'a, b and c when given the following points on the graph (0;3) , (-3;0) and (1;0) Click here to see answer by solver91311(16868)

 Question 586833: hi i really need someone to solve it fast (2x-1)^2 - (x-4)^2 + 12x - 60 = 0 i know the answer is x = 5/-5 but i need to know how . thanks !!! Click here to see answer by scott8148(6628)

 Question 586897: Solve. 12(x-4)-(x+2)=(x+2)(x-4) They book has the answer of 7 and 6. Can you tell me how they got this answer? I came up with x = 13 and 208. Click here to see answer by Edwin McCravy(8880)

 Question 586935: Hello, I need to write an equation with the given roots, write the equation in the form ax^2 + bx + c = 0. The problem is 3, -4. Click here to see answer by richwmiller(9135)

 Question 586931: a rectangular pond is to be constructed in a park. the pond will be 5 feet by 7 feet and is to be surrounded by a sidewalk of x feet. the gardener is interested in the area the pond and sidewalk will encompass. write a representative function for the area of this region as a function of x. what kind of function is this? Click here to see answer by richwmiller(9135)