Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 195679: A rocket is launched from atop a 101-foot cliff with an initial velocity of 116ft/s.
a. Substitute the values into the vertical motion formula h=-16t^2+vt+c. Let h=0
b.Use the quadratic formula find out how long the rocket will take to hit the ground after it is launched Round to the nearest tenth of a second
Click here to see answer by jim_thompson5910(28595)

Question 195690: Solve the equation by factoring
z^2-6z-27=0
and
6x^2-17x+13=20-32
Click here to see answer by user_dude2008(1861)

Question 195693: Solve the equation by factoring
6x^2-17x+13=20x^2-32
Click here to see answer by user_dude2008(1861)

Question 195694: Find the value of n such as x^2-19x+n is a perfect square trinomial
Click here to see answer by checkley77(12569)

Question 195697: 7x^2-16x-28=0
11x^2=8
Click here to see answer by jim_thompson5910(28595)

Question 195722: A polynomial function has a factor of (9x+5). What is a zero of this function?
Click here to see answer by stanbon(57361)

Question 195740: Solve by factoring: 25x^2 + 2x + 1 = 12x
Click here to see answer by jim_thompson5910(28595)

Question 195742: Solve by factoring:

x^2+9x/10=-2
Click here to see answer by user_dude2008(1861)

Question 195827: y = x² + 10x + 9
y = 5x + 5
Click here to see answer by solver91311(16897)

Question 195941: I have four questions
1) quadritic equation variable x having the given numbers as solutions. Type in standard equation form.
ax^2+bx+c=0 only solution is 7
2) JIm mows the lawn in 7 hours Sue mows the lawn in 4 hours. How much time would it take them to mow the lawn together?
3) Variation constant and an equation of variation where y vaires directly as x and y=6 when x=3? Variation constant k Equation variation is y
4) (20b^3+17b^2+18b+42) divided (4b+5)
Thanks in advance you guys rock!!
Click here to see answer by user_dude2008(1861)

Question 195914: how do you find the value of n in this equation:
v2+24v+n
Click here to see answer by solver91311(16897)

Question 195927: Three consecutive even integers are such that the square of the third is 100 more than the square of the second. Find the three integers.
Click here to see answer by nerdybill(6961)

Question 196135: Please help with my questions thanks in advance.
1) factor 112s^2+392sf+343f^2
2) f(x)=3x^2-15 need the x intercept
3) 4x(x-1)-5x(x)=3
4) x^1/6 * y^1/8 *z^1/3
Thanks a bunch
Click here to see answer by stanbon(57361)

Question 196134: This is from Activity Bank, INTEGRATED MATHEMATICS 1 Copyright by Houghton Mifflin Company.
One of the world's largest paintings is "The Battle of Gettysburg." When it was completed in 1883 by a French artist and 16 assistants, it covered an area of 28,700 ft. The perimeter was 960 ft. Find thd length and width of the painting.
Click here to see answer by Earlsdon(6287)

Question 196190: please help me solve these equations:
1)p^2+3p-54
2)n^2-n-12
3)a^2+10a+24
i really need help....thank u

yasmine L
Click here to see answer by stanbon(57361)

Question 196132: This is from Activity Bank, INTEGRATED MATHEMATICS 1 Copyright by Houghton Mifflin Company.
The city of Casablanca, Morocco has the world's largest swimming pool. The distance between two opposite corners of the pool is about 1590 ft. The length is about 1325 ft. longer than the width. What are the length and width of the pool?
Click here to see answer by nerdybill(6961)

Question 196227: A quadratic equation produced the solutions x= -3 and x= -1/2. What is the TRINOMIAL equation that gives these answers?
Click here to see answer by Alan3354(30993)

Question 196285: I have two questions that I have been toying with and they are driving me nuts. Can someone help please
1) a 10 inch tv has a width of 8 inches. WHat is its height?
2)Find a polynomial for the perimeter and for area.( shape is a rectangle)
top of the rectangle is x+6 the side is just the letter x.
Thanks in advance

Click here to see answer by Earlsdon(6287)

Question 196325: 1) Is it possible for a quadratic equation to have no real solution? Give an example of a quadratic polynomial equation that has no real number as its solution. Explain your answer using your example.

2) Joe travels a distance of 60 miles with an average speed of 40 miles per hour, and immediately he returns back the same path with an average speed of 48 miles an hour, what is his average speed for the round trip of 120 miles? Be Precise! Explain your answer. If the one way distance is 10 miles, would that change your answer? Explain.

Click here to see answer by Mathtut(3670)

Question 196335: Please help me solve this equation:
Click here to see answer by edjones(7569)

Question 196408: x^2+8x-2=0
Click here to see answer by vleith(2825)

Question 196456: I have this question to answer for an assignment:
If you are looking at a graph of a quadratic equation, how do you determine where the solutions are?
Thank you in advance for your help.
Click here to see answer by ankor@dixie-net.com(15656)

Question 196508: Please help me solve this equation:
Click here to see answer by ankor@dixie-net.com(15656)

Question 196540: Solve by completing the square:
x^2 + 8x + 13 = 0
Click here to see answer by josmiceli(9686)

Question 196542: Solve using the quadratic formula:
x^2 – 3x – 23 = 5
Click here to see answer by edjones(7569)

Question 196541: Solve using the quadratic formula:
3x2 – 2x = 15x – 10

Click here to see answer by jim_thompson5910(28595)

Question 196541: Solve using the quadratic formula:
3x2 – 2x = 15x – 10

Click here to see answer by checkley77(12569)

Question 196505: Hello!
I'm having trouble getting the correct answer for this problem with the quadratic formula.
Find all solutions of the equation and express them in the form a + bi.
4x^2-8x+7=0
thanks!
Click here to see answer by jim_thompson5910(28595)

Question 196504: Hello!
I'm having trouble getting the correct answer for this problem with the quadratic formula. I keep getting the answer -1+2i and -1-2i
Find all solutions of the equation and express them in the form a + bi.
x^2+2x+2=0
Click here to see answer by jim_thompson5910(28595)

Question 196635: Hi!
On the following problem I keep getting the incorrect answer. I think I'm close to the right answer just making a small error somewhere. Can you help me?
Solve the equation for the variable x. The constant a represents a positive real number.
a^3x^3 + 64 = 0
Click here to see answer by Alan3354(30993)

Question 196637: Solve using the quadratic formula:
x squared= 8x-16
I am really confused, because this doesn't really follow the formula.
Thanks in advance!! :)
Click here to see answer by jim_thompson5910(28595)

Question 196660: What is the vertex? I was taking onilne tests, and it says: name the vertex. What is the vertex?
Example?
Thanks
-Confused
Click here to see answer by jim_thompson5910(28595)

Question 196658: Please help me solve the following equations by using the method of factorization.

1) Solve: 2x^2 - 7x - 15 = 0 using the method of factorization. ( Solve by factoring).

2) Solve: (5x + 2)^2 = 9

3) Solve: x^2 - 12x + 32 = 0.

4) Solve: x/(x - 1) = (x + 5)/x

Click here to see answer by vleith(2825)

Question 196687: Find a quadratic equation with roots -1 + 4i and -1 - 4i.
Click here to see answer by stanbon(57361)

Question 196701: Solve using the quadratic formula:
4x squared+4x=15
I have tried to plug this into the formula, but I don't know if I have to do anything special to the 4x squared, since there is a 4 in there.
Thanks in advance!! :)
Click here to see answer by Alan3354(30993)

Question 196755: Solve using the quadratic formula:
x2 – 3x – 23 = 5

Click here to see answer by checkley77(12569)

Question 196754: Solve using the quadratic formula:
3x2 – 2x = 15x – 10

Click here to see answer by checkley77(12569)

Question 196750: Solve by factoring:
x2 – 9x = -20

Click here to see answer by checkley77(12569)

Question 196753: Solve by completing the square:
x^2 + 8x + 13 = 0

Click here to see answer by J2R2R(94)

Question 196752: Solve using the square root property:
(x + 8)2 = 81

Click here to see answer by rk433(1)

Question 196774: An algebric equation which is reducible to qudratic equation:
X^6 - 9X^3 + 8 =0
Click here to see answer by RAY100(1637)

Question 196751: Solve using the square root property:
5x2 = 100
Click here to see answer by edjones(7569)

Question 196644: I keep getting the incorrect answer to the following problem, I'm not sure where my error was, can you help me?
A large pond is stocked with fish. The fish population P is modeled by the formula P = 4t + 8√t + 110, where t is the number of days since the fish were first introduced into the pond. How many days will it take for the fish population to reach 500?
thanks!
Click here to see answer by edjones(7569)

Question 196798: The area of a rectangle is 90 ft^2. The length is 3 more than twice the width. What are the demensions of the rectangle?
Click here to see answer by solver91311(16897)

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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