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 Question 299526: what is the exact and approximate solution to three decimal places x^2+5x-7=0 Click here to see answer by Alan3354(31513)

 Question 299546: This is the exact equation she gave me: "A child tosses a ball upward with an initial velocity of 10 f/s at a height of 3 feet. If it is not caught, how long will it be in the air?" The formula she gave us to use is h(t)=-16^2+vt+s I tried setting it equal to zero but got lost after that. Click here to see answer by Alan3354(31513)

 Question 299568: The product of 7 and the square of a number is 112. Find the number. Click here to see answer by mananth(12270)

 Question 299573: i need to get 2x^2+4x+1=0 i know about the a=2 b=4 c=1 but i have completely forgotten how to apply it Click here to see answer by Edwin McCravy(8999)

 Question 299581: Solve by applying the Quadratic Formula; all radicals should be simplified as far as possible. Show your work. a^2 - 12a + 35 = 0 Click here to see answer by jim_thompson5910(28705)
 Question 299581: Solve by applying the Quadratic Formula; all radicals should be simplified as far as possible. Show your work. a^2 - 12a + 35 = 0 Click here to see answer by Edwin McCravy(8999)

 Question 299575: Give the exact and approximate solutions to three decimal places. x^2-7x+7=0 Click here to see answer by jim_thompson5910(28705)

 Question 299593: A baseball is thrown straight upwards with an initial velocity of 224 ft/s. At what time(s) does the ball reach 832 feet? Click here to see answer by helpnalgebra(91)
 Question 299593: A baseball is thrown straight upwards with an initial velocity of 224 ft/s. At what time(s) does the ball reach 832 feet? Click here to see answer by Alan3354(31513)

 Question 299578: The formula s = 16t^2 is used to approximate the distance s, in feet, that an object falls freely (from rest) in t seconds. Use this formula to solve the problem. (Round answer to the nearest tenth.) A branch of a tree hangs 575 ft above the soil. If a twig breaks off, how long will it take it, falling freely, to reach the soil? Click here to see answer by mananth(12270)

 Question 299709: Together, two pipes can fill a swimming pool in 4 hours. Click here to see answer by richwmiller(9144)

 Question 299705: Pls. help me solve these problem: A grassy plot 25m by 30m is surrounded by a walk of uniform width. If the area of the walk is 300sq. m., how wide is it? Click here to see answer by nerdybill(7003)

 Question 299902: sketch graph of quadratic function. give the vertex and axis of symmetry f(x)= -2(x+5)^2-6 Click here to see answer by stanbon(57960)

 Question 299970: The area of a rectangle is 91 square inches. It's length is 1 inch les than twice its width. What is the length? Click here to see answer by JBarnum(2044)
 Question 299970: The area of a rectangle is 91 square inches. It's length is 1 inch les than twice its width. What is the length? Click here to see answer by Alan3354(31513)

 Question 299958: The cost of 5 boxes of cookies is 15 dollars. Which equation shows this in function notation? Click here to see answer by josmiceli(9817)

 Question 300035: Hello! this is an s.o.s. fI need to figure out this problem for class and keep getting stuck. I am supose to translate this problem into two a pair of linear equations in two variables. solve the equation using the elimination or substitute method. Roberto invested some money at 7%, and then invested \$2000 more than twice this amount at 9%. His total annual income from the two investments was \$2930. How much was invested at 9% ? I started out like this, but keep getting stumped!!! x(0.07) + x*2+2000=2930 or 2930 - s(0.07)=n 2930- 2s+2000(0.09)=n See wwhat I mean? Click here to see answer by nerdybill(7003)

 Question 300155: i don't understand some of the quadratic equation steps, like: * when to use the two different equations. *when do i know that there are no solutions *if i got a fraction for x do i turn it into a decimal? *if i don't have to turn it into decimal is there a chance that i can get a real big number? how can i work that out? *when i use the long equation(the one with the square root on it) im looking for the vertex in the parabola or what.. i don't understand? Please help me im doing kind of bad in Algebra because i don't understand this quadratic equations Maria Rivera Click here to see answer by stanbon(57960)
 Question 300155: i don't understand some of the quadratic equation steps, like: * when to use the two different equations. *when do i know that there are no solutions *if i got a fraction for x do i turn it into a decimal? *if i don't have to turn it into decimal is there a chance that i can get a real big number? how can i work that out? *when i use the long equation(the one with the square root on it) im looking for the vertex in the parabola or what.. i don't understand? Please help me im doing kind of bad in Algebra because i don't understand this quadratic equations Maria Rivera Click here to see answer by richwmiller(9144)

 Question 300239: Give four solutions (ordered pairs) to the quadratic equation: y = -x^2 - 5x. Click here to see answer by Fombitz(13828)

 Question 3998: What is the next term of the sequence 9, 6, 4, 8/3, . . . ? Click here to see answer by junit_2010(2)

 Question 300404: what is the vertex of a parabala on the graph Click here to see answer by Fombitz(13828)

 Question 300360: The formula P=0.64x^2-0.041x+3 models the approximate population, P, in thousands, for a species of fish in a pond, x years after 1997. During what year will the population reach 54,471 thousand fish? Click here to see answer by Fombitz(13828)

 Question 300474: How do you solve 2a^2 - 5a - 12 = 0 in quadratic form? Click here to see answer by Fombitz(13828)
 Question 300474: How do you solve 2a^2 - 5a - 12 = 0 in quadratic form? Click here to see answer by JBarnum(2044)

 Question 300547: Suppose you are going to construct a circular fish pond in your garden. You want the pond to cover an area of 300ft^2. What is the radius of the pond? Click here to see answer by nerdybill(7003)

 Question 300563: Find the dimensions of a rectangular lawn whose perimeter is 100 feet and whose area is 600 square feet. --They want me to use the quadratic formula, but I don't know how to set the equation up. That's all I'm having trouble with. I know how to use the quadratic formula fairly well. Can you please help me? ~Thanks! Click here to see answer by nerdybill(7003)
 Question 300563: Find the dimensions of a rectangular lawn whose perimeter is 100 feet and whose area is 600 square feet. --They want me to use the quadratic formula, but I don't know how to set the equation up. That's all I'm having trouble with. I know how to use the quadratic formula fairly well. Can you please help me? ~Thanks! Click here to see answer by dabanfield(803)

 Question 300627: State the value of the descriminant & describe the nature of the roots in 5x^2=4x+6 Click here to see answer by jim_thompson5910(28705)

 Question 300657: DETERMINE THE EQUATION OF THE LINE OF SYMMETRY OF THE PARABOLA Y=X^2=5 Click here to see answer by Alan3354(31513)

 Question 300959: 9x^2-3x-20 Factor each polynomial, if possible. If the polynomial cannot be factored, write prime. I would appreciate an answer to this so much! Thanks! Click here to see answer by unlockmath(1614)

 Question 300971: the length of a rectangle is 9cm longer then the width. The area of the rectangle is 90cm. What are the dimensions of the rectangle ? Click here to see answer by unlockmath(1614)

 Question 301003: Quadratic application If the cost ,C(x) for manufactoring x units of a certain product is given by C(x)=x^2-125x+50, find thye units manufactored at a cost of \$9500 Click here to see answer by nerdybill(7003)

 Question 300954: An object is dropped off a building that is 144 feet tall. After how many seconds does the object hit the ground? (s = 16t2) : How long to fall 144 ft at a velocity of 16 ft/sec/sec Click here to see answer by ankor@dixie-net.com(15746)

 Question 301116: graph the following exponential function: F(x)= 2^x+3 when x= 0,1,2,3,4,-1,-2,-3,-4 also solve the equation 1/27=3^2*x Click here to see answer by nyc_function(2733)