Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 539152: What is the minimum value of the function y = 3x2 + 2x – 8?
and
The equation h = 40t – 16t2 describes the height h, in feet, of a ball that is thrown straight up as a function of the time t, in seconds, that the ball has been in the air. At what time does the ball reach its maximum height? What is the maximum height?
Click here to see answer by stanbon(75887)  |
Question 539715: I need help solving a quadratic equation.
The area of a field shaped like a right triangle is 600m2 ( squared). The legs of the field are fenced with steel at $10/m, while the hypotenuse is fenced with aluminum at $20/m. The perimeter of the field is 120m. The total cost of the fencing is $1700.
A. What is the length of each side of fence with steel?
B. what is the length of the side of the fence with aluminum?
Here's what I've tried:
xy/2= 600m2
x+y+z= 120
10x + 10y + 20z = $1700 or x+ y + 2z = $170
Not sure how to get rid of one of the variables.
Would greatly appreciate your assistance.
Daniel
Click here to see answer by mananth(16946)  |
Question 540037: I have two questions both on quadratic equations. I am not understanding how to do them. The first one says to write it in standard quadratic form. The solutions are
negative sign sqrt 5, and 4 sqrt 5.
The second one says to find the solution(s).
w^4-20w^2-2=0.
If you could help with either of these I would greatly appriciate it.
Thanks so much!
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 540834: In a triangle (ABC), suppose u have know the two vertex of triangle like A(4,6) and B(8,5). Then we have to find the third vertex of the triangle? Then my question is how to find the third vertex of triangle using the shortcut method....... Plz explain the solution...
Click here to see answer by AnlytcPhil(1806)  |
Question 541158: I need help solving this problem I have been working on it for awhile and I am stuck. A wire is 78ft long. It is attached to the top of a 75 foot cell phone tower. How far is it from the base of the pole to the point where the wire is attached to the ground? I know that the equation to solve the problem is 75^2+x^2=78^2, but I dont know tho proceed from here. Any help will be greatly appreciated. Thank you so much
Click here to see answer by friesr(113) |
Question 541158: I need help solving this problem I have been working on it for awhile and I am stuck. A wire is 78ft long. It is attached to the top of a 75 foot cell phone tower. How far is it from the base of the pole to the point where the wire is attached to the ground? I know that the equation to solve the problem is 75^2+x^2=78^2, but I dont know tho proceed from here. Any help will be greatly appreciated. Thank you so much
Click here to see answer by lwsshak3(11628) |
Question 541823: THe height in feet a ball is t seconds after being throan in the air is given by H(t)=-16t^2+64t+5
A)How long did it take the ball to reach its maximum height above the ground
B)What was the maximum height above the ground the ball reached
Click here to see answer by nerdybill(7384)  |
Question 541946: It's my very first time seeking help on this website because I am truly lost. The question from my book says that "the radicand of the quadratic formula, b^2 - 4ac, can be used to determine whether  has solutions that are rational, irrational, or not real numbers." I haven't been able to solve the problem on this website because it's saying that the first coefficient is zero. It's also asking me to explain how this works. And if it possible to determine the kinds of answers that one will obtain to a quadratic equation without actually solving the equation. I would greatly appreciate any help I can get.
Click here to see answer by Alan3354(69443)  |
Question 541963: The question from my book says that "the radicand of the quadratic formula, b^2 - 4ac, can be used to determine whether has solutions that are rational, irrational, or not real numbers." I haven't been able to solve the problem on this website because it's saying that the first coefficient is zero. It's also asking me to explain how this works. And if it possible to determine the kinds of answers that one will obtain to a quadratic equation without actually solving the equation. I would greatly appreciate any help I can get.
Click here to see answer by neatmath(302)  |
Question 541962: It's my very first time seeking help on this website because I am truly lost. The question from my book says that "the radicand of the quadratic formula,  , can be used to determine whether  has solutions that are rational, irrational, or not real numbers." I haven't been able to solve the problem on this website because it's saying that the first coefficient is zero. It's also asking me to explain how this works. And if it possible to determine the kinds of answers that one will obtain to a quadratic equation without actually solving the equation. I would greatly appreciate any help I can get.
Click here to see answer by Alan3354(69443) |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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