Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 957217: 2x^2+4x=30
Click here to see answer by Fombitz(32388)

Question 957217: 2x^2+4x=30
Click here to see answer by stanbon(75887)

Question 957160: A projectile is shot vertically upward. Its height h in feet after time t in seconds may be expressed by the formula .
Find t when h = 80.0 feet.

Click here to see answer by Fombitz(32388)

Question 957164: The mass (in Mg) of the fuel supply in the first-stage booster of a rocket is m = 135 - 6t - t^2, where is the time ( in s) after launch. When does the booster run out of fuel
Click here to see answer by Fombitz(32388)

Question 957288: Any help provided would be highly appreciated.
Solve the systems of equations.
y=-0.04x^2+5.2x
y=1.12x+1.6
y=x^2-2x-2
y=4x+5
Click here to see answer by Alan3354(69443)

Question 957325: A quadratic relation has the equation y=a(x-s)(x-t)
Find the value of a when
a) y=a(x-2)(x+6) and (3,5) is a point on the graph
b)the parabola has zeros of 4 and -2 and a y-intercept of 1
c)the parabola has x-intercepts of 4 and -2 and a y-intercept of -1
d)the parabola has zeros of 5 and 0 and a minimum value of -10
e)the parabola has x-intercepts of 5 and -3 and a maximum value of 6

Click here to see answer by stanbon(75887)

Question 957350: A projectile is shot vertically upward. Its height h in feet after time t in seconds may be expressed by the formula h = 96t - 16t^2.
Find t when h = 80.0 feet.

Click here to see answer by macston(5194)

Question 957353: What is the x - coordinate of the vertex of y = 4 x^2 + 24x - 7
Click here to see answer by lwsshak3(11628)

Question 957431: Solve using the quadratic formula
2x squared -3x -5=0
Click here to see answer by stanbon(75887)

Question 957444: Find the values of m so that the difference between the roots of 3x^2+mx-12=0 is 5.
thank you
Click here to see answer by MathLover1(20849)

Question 957430: Solve using the quadratic formula.
9n squared + 4 +7n
Click here to see answer by Alan3354(69443)

Question 957430: Solve using the quadratic formula.
9n squared + 4 +7n
Click here to see answer by MathLover1(20849)

Question 957585: What is the length of the radius of a circle whose diameter has endpoints (3,2) and (-7, -2)
Click here to see answer by Alan3354(69443)

Question 957633: Use the graph of f(x) to find the solutions to the equation f(x)=0.
What are the solutions of the equation 2x^2=8? Use a graph of a related function whose roots answer the question.

Click here to see answer by stanbon(75887)

Question 957658: Please help me solve this equation:
Here's what I had done so far:
x^2 + 21 + 100
(x + 4)(x + 25) 100: 25 x 4; Because 25-4=21

When I have tried: -25,-4 or 25,4 or -25,4, or -4,25; I could not get a solution...The topic is factoring polynomials.
Click here to see answer by Alan3354(69443)

Question 957676: Solve. Factor by graphing.
x^3+5x^2-x-5=0

Click here to see answer by Edwin McCravy(20054)

Question 957716: a rectangular garden is fenced on three sides with a wall forming the fourth side. The total lenght of the fence is 80m. The area of the garden is 750m^2. Find the dimensions of the garden.
Click here to see answer by macston(5194)

Question 958013: An automobile company sells 5 trucks for every 9 sedans. If the company sells 15 trucks, how many sedans will they sell?
Click here to see answer by jim_thompson5910(35256)

Question 958071: how do you do the quadratic formula and solve for
x squared + 7x - 4096
Click here to see answer by stanbon(75887)

Question 958071: how do you do the quadratic formula and solve for
x squared + 7x - 4096
Click here to see answer by Alan3354(69443)

Question 958064: What are the solutions of the solutions of the equation -2x squared - 5x +25=0
Click here to see answer by Fombitz(32388)

Question 958059: Find two numbers whose product is 156 if the sum of their squares is 313. Show your work.
Click here to see answer by Fombitz(32388)

Question 958249: factor: 12x squared-9x-15
Click here to see answer by Fombitz(32388)

Question 958306: x^2-4x=5
Click here to see answer by Alan3354(69443)

Question 958306: x^2-4x=5
Click here to see answer by macston(5194)

Question 958335: I need help with this question: find two consecutive odd integers such that the sum of the first decreased by the second is 28.
Thanks!
Click here to see answer by macston(5194)

Question 958389: The product of two positive numbers is 48. The larger number is 13 more than the smaller. Find both numbers
Click here to see answer by lwsshak3(11628)

Question 958389: The product of two positive numbers is 48. The larger number is 13 more than the smaller. Find both numbers
Click here to see answer by Alan3354(69443)

Question 958553: 16a(4a+3)=-5
Click here to see answer by macston(5194)

Question 958572: How do quadratic equations teach us and what can we learn from parabolas?
I didnt understand it so can you please help me out?
Click here to see answer by MathLover1(20849)

Question 958622: I have a fair understanding of finding discriminants but I am stumped on one.
x square - 15 = 0
Click here to see answer by josgarithmetic(39613)

Question 958622: I have a fair understanding of finding discriminants but I am stumped on one.
x square - 15 = 0
Click here to see answer by macston(5194)

Question 958864: An entry in the Apple Festival Poster Contest must be rectangular and have an area of 1200 square inches. Also, its length must be 20 inches longer than its width. Find the dimensions each entry must have.
Click here to see answer by lwsshak3(11628)

Question 958940: The perimeter of a rectangle is 136 cm. The area is 1035 cm. Find the dimensions of the rectangle.
Click here to see answer by josgarithmetic(39613)

Question 958926: The sum of three consecutive odd integers is 579. What is the largest of the three integers?

The largest of the integers is ?
Click here to see answer by Fombitz(32388)

Question 959011: Which of the following is a solution of x2 - 7x = -5?

Click here to see answer by stanbon(75887)

Question 959082: For f(x)= x^4+25x^2 + 144 answer the following questions.

a) How many zeros will f(x) have?

b) Find all the zeros of f(x).

c) Factor f(x).

d) What are the x intercepts of f(x)?
Click here to see answer by Fombitz(32388)

Question 959048: Write a quadratic function that fits the points (2,27) (4,61) and (7,142).
Click here to see answer by Fombitz(32388)

Question 959085: solve
2(x - 3) (x - 2) +(x - 3) (x + 5) = (2x + 3) (x � 4)
Click here to see answer by MathLover1(20849)

Question 959302: At a basketball game, members of the Spirit Club use a t-shirt cannon to launch team t-shirts to spectators in the stands.
The equation below describes the height, h, of the t-shirt, t seconds after it is shot from the cannon c feet above the ground, at an initial velocity of v.
h = -16t^2 + vt + c
Solve the equation for initial velocity, v.
The cannon launched a t-shirt from an initial height of 5 feet.
After 3 seconds the shirt has reached a height of 131 feet.
Use your equation from #1 to find the initial velocity of the t-shirt.
Show your work.
What does the equation from #1 tell you about the value of the velocity, v, when t = 0? Explain.

Click here to see answer by josmiceli(19441)

Question 959373: the combined area of two squares is 45 square centimeters. each side of one square is twice as long as the side of the other square. what is the length of each side of the larger square
Click here to see answer by macston(5194)

Question 959370: quadratic equation: square root
8(x+2)^2=648
Click here to see answer by macston(5194)

Question 959428: 0 = -4x2 + 6x + 7.
Click here to see answer by addingup(3677)

Question 959434: The length of a small rectangular garden is 1 meter greater than the width. The area of the grarden is 132m^2. Find the length of the garden.
Click here to see answer by addingup(3677)

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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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, 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23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 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