Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 440852: A Ball is thrown upward from a height of 15 ft. with an initial upward velocity of 5 ft a sec. Use the formula h=-16t squared+vt+s to find out how long it will take for the ball to hit the ground?
Click here to see answer by Alan3354(31538)

Question 440835: A baseball diamond is actually a square 90 feet on a side. A catcher fields a bunt along the third baseline 10 feet from home plate. How far would the catcher have to throw the ball to second base. This is a homework problem and I need to show all work.
Click here to see answer by jorel1380(2518)

Question 441196: is y= x² + x - 2 a function?
Click here to see answer by robertb(4012)

Question 441072: The area of a rectangular playground is 16 square yards. The length of the playground is 4 times longer than its width. Find the length and width of the playground
Click here to see answer by Euler(11)

Question 441177: How do you complete the squares in this equation: x^2-2x+y^2-15=0?
Click here to see answer by ewatrrr(10682)

Question 441239: I need help solving this quadratic equation -
-3w^2-6w+3=0
thanks for your help
Click here to see answer by ewatrrr(10682)

Question 441281: (x+2)^2=36, give exact and approximate to 3 decimal places.
Click here to see answer by ewatrrr(10682)

Question 441280: x^2+6x+9=25, give exact and approximate within 3 decimal places.
Click here to see answer by ewatrrr(10682)

Question 441277: Nature of solutions, y^2=4/7y+5/3
Click here to see answer by ewatrrr(10682)

Question 441078: we are doing conics in algebra and we have to put these equation into the standard form for the conic and i am having trouble with these equations.
1) parabola: x^2-2x+8y+9=0
2)parabola: x^2-2x+8y+17=0
3)parabola: y^2-4y-4x=0
4)hyperbola; 12x^2-20y^2-12x+40y-37=0
is there any way you can help?
Click here to see answer by ewatrrr(10682)

Question 441028: Which quadratic equation has solutions of 5 and 7?
Click here to see answer by ewatrrr(10682)

Question 440914: Find the center and radius of the circle.
y^2=25-x^2
Click here to see answer by ewatrrr(10682)

Question 440883: x^2+10x+22=0
Click here to see answer by ewatrrr(10682)

Question 440867: Is the function y + 2x^2= -2 quadratic?
Thanks for your help
Click here to see answer by ewatrrr(10682)

Question 440862: 8x^2 + 3x = -2
Click here to see answer by ewatrrr(10682)

Question 441484: how to solve this quadratic equation listed below:
4(x+4)^2-21-175
Click here to see answer by Alan3354(31538)

Question 441920: what is the discriminant of the quadratic equation for 4x^2-9x=0 and what is the number and type of solution for free
Click here to see answer by Cabdiqafaar(9)

Question 440336: write a quadratic equation having the given numbers as solutions -11 and -3
Click here to see answer by Cabdiqafaar(9)

Question 442077: Solve the following equation by first multiplying both sides by the LCD and then applying the quadratic formula to the result. (Enter solutions from smallest to largest.)
1/2x^2-1/2x-15/32=0
x = ?
x = ?
Please show me the steps to get the answer. Thanks
Click here to see answer by MathLover1(6815)

Question 442079: Solve the equation 25x2 - 64 = 0 using the quadratic formula. (Notice b = 0. Enter solutions from smallest to largest.)
x = ?
x = ?
Please show me the steps to get the answer. Thanks
Click here to see answer by richard1234(5390)

Question 441579: Ms. Theodorou wants to hang a portrait of Mr Fucheck in the hallway.
The length of the picture is (x+2) and the width of the picture is (x+1).
Ms Cavazzi will build a frame out of wood. The Frame will have a 2 inch border.
The area of that entire Portrait will cover is 272 inches square. Find the dimensions of the picture.
Click here to see answer by ankor@dixie-net.com(15747)

Question 442222: add, simplify if possible; 2z/z^2-64 + z/z-8
Click here to see answer by stanbon(57984)

Question 442228: express using a positive exponent, u^-4
Click here to see answer by stanbon(57984)

Question 442226: express using a positive exponent, u^-4
Click here to see answer by ilana(307)

Question 442106: Solve the following equation by using the quadratic formula. (Enter solutions from smallest to largest. If there is one solution with a multiplicity of two, enter it in both answer boxes.)
9x^2+18x+2=0
x = ?
x = ?
Please show me the steps to get the answer. Thanks
Click here to see answer by ankor@dixie-net.com(15747)

Question 442225: multiply, (5sqrt(7)-15sqrt(2)) (4sqrt(7)+12sqrt(2))
Click here to see answer by ilana(307)

Question 442320: Please help with this problem. Find all numbers for which the rational expression is undefined.
s^3-7s/s^2-64
Click here to see answer by swincher4391(726)

Question 442321: Need help please with this problem. Rewrite with a rational exponent.
^5√23
Click here to see answer by swincher4391(726)

Question 442317: Please help me with this problem. Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function, and graph the function.
f(x)= -2x^2+2x+7
Click here to see answer by swincher4391(726)

Question 442276: m squared - 9m -24 ,Factor the type one qudratic
Click here to see answer by swincher4391(726)

Question 442254: how to solve for X in the equation 8X-2+12X-18

choose one
X=-1
X=4
X=-4
X=1
Click here to see answer by swincher4391(726)

Question 442378: Can someone please help me with this problem?
The population P in 1993 for a state given along with r, its annual percentage rate of continuous growth
P= 34 millions, r= 2.6%
(a) Write the formula f(x) = P e^yx, where r is in the decimal notation, that models the population in millions x years after 1991.
(b) Estimate the population in 2010
F(x) = ?
The population in 2015 will be approximately how many million?
(round to the nearest tenth as needed)
Thank you so much for your time. I appreciate it
Click here to see answer by nerdybill(7011)

Question 442383: whrite a quadratic equation in the variable x having the given numbers as solutions. type the equation in standard form, ax^2+bx+c=0 solution: 4, only solution
Click here to see answer by mananth(12270)

Question 442376: I have a equation to the 3rd degree 1x^3-7x^2+19x-13 and it needs to be in quadratic from so that I may solve it and I am not sure how to get it that form.
Click here to see answer by Edwin McCravy(8999)

Question 442394: a fraternity charters a bus for a trip at a cost of 360 when 6 more students join the trip each person's cost decreases by 2. how many students were in the original group
Click here to see answer by josmiceli(9819)

Question 442456: solving by substitution. x+y=4
x=y+1
Click here to see answer by swincher4391(726)

Question 442498: solving by substitution method. 4x-5y= -35
4x+39=y
Click here to see answer by stanbon(57984)

Question 442528: solving by substitution method. 8m+n=3
m-9n=46
Click here to see answer by swincher4391(726)

Question 442535: Use the formula A=P(l=r)t to find the rater r at which $3000 grows to $5247 in 4 years
Click here to see answer by stanbon(57984)

Question 442534: The length of one leg of a right triangle is 8 inches. The length of the other leg is 6 inches shorter than the hypotenuse. Find the length of the missing leg and the hypotenuse
Click here to see answer by swincher4391(726)

Question 442554: solve by using elimination method. x+4y=32
-x+8y=52

Click here to see answer by stanbon(57984)

Question 442578: Hello,
I was wondering if you would be able to help me out on this problem. I'm not sure where to start:
Use the given area to find the height and base of the triangle.
Area = 84
Base = 2x+5
Height = x
Then I need to type an integer or a simplified fraction for what the height of the triangle is
Click here to see answer by swincher4391(726)

Question 442589: Hello,
I was wondering if you would be able to help me out on this problem. I'm not sure where to start:
The area of the parallelogram is 108 square miles. Find it's base & height.
Click here to see answer by swincher4391(726)

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11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 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