Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 93122: I need help with these problems
Solve by using the quadratic formula: 3x^2=11x+4

and also find the axis of symmetry: y=-x^2+4x+2

Thanks a million
Click here to see answer by Earlsdon(6287)

Question 93137: I am in need of help:I am lost on these.
Graph the quadratic after completeing the given table value. Y=x^2+2
and
Graph the quadratic after completeing the given table value. y=x^2+2x-3

Thanks a miilion
Click here to see answer by checkley75(3666)

Question 93184: I need help to solve this problem I am having problems figuring it out
Find the x - intercepts y=x^2-2x+4
thanks a million
Click here to see answer by venugopalramana(3286)

Question 93184: I need help to solve this problem I am having problems figuring it out
Find the x - intercepts y=x^2-2x+4
thanks a million
Click here to see answer by checkley75(3666)

Question 93185: I need help to solve these problem I am having problems figuring it out.
Identify the axis summetry, greate a suitable table of value, then sketck the graph(include the axis of summetry).
The first one is y=x^2-4x
and the other one is y= -x^2+3x-3
thanks a million
Click here to see answer by venugopalramana(3286)

Question 93157: formula for arc of a baseball h=-0.003x2(to 2nd power)+ 1.202x + 3.936
h-height of ball at distance from plate x If fence is 400ft from home plate and 8ft high, will the ball clear the fence to be a home run?
Thank You in Advance

Click here to see answer by bucky(2189)

Question 93226: I need some help I am having problems

Graph the quadratic equation after completeing the given table of values. Y=-x^2+1

Table of value is
X y
-2
-1
0
1
2

Thank you
Click here to see answer by Nate(3500)

Question 93225: I need some help I am having problems solving these problems.
Solve: (x-4)^2=3
and solve 5(x-2)^2=3
Thank you
Click here to see answer by Nate(3500)

Question 93329: 6w+4>5w+4
Click here to see answer by jim_thompson5910(28595)

Question 93329: 6w+4>5w+4
Click here to see answer by tutorcecilia(2152)

Question 93321: Between 1992 and 1998 the percent of college freshman who planned to eventually get some type of medical degree can be approximated by s=-0.2369^2 + 1.425x + 6.905 where s represents the number of students and x represents the year. X=0 corresponds to 1992. In what year did this percentage reach a maximum?
Sorry, not from a text
Thanks in advance
Click here to see answer by ankor@dixie-net.com(15652)

Question 93340: Problem: From the information below,write an equation and then solve the equation.
My mother is three times as old as my sister. If the difference between their ages is 22 years, find both of their ages.

Click here to see answer by Earlsdon(6287)

Question 93345: Problem: From the information below, write an equation and then solve the equation.
A rectancle is 8cm longer than it is wide. The perimeter of the rectangle is 72 cm. Find the dimension of the rectangle.

Click here to see answer by checkley75(3666)

Question 93432: Use synthetic division to divide x^4 + 4x^3 + 6x^2 + 4x + 1 by x + 1. can soemone help me please
Click here to see answer by jim_thompson5910(28595)

Question 93430: If x varies inversely as y and x = 2 when y = 8, find x when y = 15. PLEASE HELP
Click here to see answer by jim_thompson5910(28595)

Question 93430: If x varies inversely as y and x = 2 when y = 8, find x when y = 15. PLEASE HELP
Click here to see answer by Earlsdon(6287)

Question 93431: If y varies directly as x and inversely as z^2, and y = 3 when x = 2
and z = 4, what is the value of x when y = 9 and z = 4?
Click here to see answer by psbhowmick(529)

Question 93441: Use the quadratic formula to solve the following quadratic equation.
2x^2-5x=3
Click here to see answer by checkley75(3666)

Question 93439: Find to consecutive integers such that the sum of their squares is 85.
Click here to see answer by checkley75(3666)

Question 93439: Find to consecutive integers such that the sum of their squares is 85.
Click here to see answer by jim_thompson5910(28595)

Question 93437: Solve the equation for x.
2(x-5)^2=3
Click here to see answer by checkley75(3666)

Question 93446: Use synthetic division to find the value of f (-2) for f (x) =
x ^3 - 3x^2 - x - 9.
Click here to see answer by stanbon(57356)

Question 93440: A garden area is 30ft. long and 20ft. wide. A path of uniform width is set around the edge. If the remaining garden is 400ft.^2, what is the width of the path?
Click here to see answer by jim_thompson5910(28595)

Question 93435: Solve the quadratic equation by completing the square.
x^2-6x-3=0
Can you help me with this?
Click here to see answer by jim_thompson5910(28595)

Question 93436: Solve equation for x.
25x^2=13
Click here to see answer by checkley75(3666)

Question 93459: 1. The length of one leg of a right triangle is 6 cm more than the other. If the length of the hypotenuse is 18 cm, what are the lengths of the two legs? Please give the answer in ascending order rounded to the nearest tenth of a cm.
Click here to see answer by jim_thompson5910(28595)

Question 93461: 2. Suppose that a ball is thrown upward with an initial velocity of 22 ft/sec. If the ball is released at a height of 5 ft., the height equation may be written as h=-16t^2+22t+5 When, to the nearest thousandth of a sec., will the ball be at a height of 9ft. on the way up?
Click here to see answer by jim_thompson5910(28595)

Question 93468: 3. A projectile is fired upward from a platform in such a way that the object will miss the platform on the way down. If the height of the platform is 28 ft and the initial velcoity is 204ft/sec, the height is given by h=-16t^2+204t+28 When will the projectile hit the ground?
Click here to see answer by jim_thompson5910(28595)

Question 93477: 4. The demand equation for a certain computer chip is given by D=-15p+145 The supply equation is predicted to be S=-p^2+45p-270 Find the equilibrium price.
Click here to see answer by jim_thompson5910(28595)

Question 93496: question 93435 is similar but i don't understand the process.
question: x^2 + 4x - 12 = 0
no text available and no use of a calculator is allowed.
Click here to see answer by checkley75(3666)

Question 93534: I am in need of help
A rectangle garden is to be surrounded by a walkway of constant width. The gardens dimensions are 30ft by 40ft. The total area, garden plus walkway is 1800ft^2. What must be the width of the walkway to the nearest thousandth?
Thank you
Click here to see answer by ankor@dixie-net.com(15652)

Question 93535: I am in need of help
Solve by using the quadratic formula X^2=5x+8
Thank you
Click here to see answer by checkley75(3666)

Question 93535: I am in need of help
Solve by using the quadratic formula X^2=5x+8
Thank you
Click here to see answer by chitra(359)

Question 93571: Can you solve by factoring the quadratic
5y³ + 34y² = 7y
and show every step?
Click here to see answer by stanbon(57356)

Question 93571: Can you solve by factoring the quadratic
5y³ + 34y² = 7y
and show every step?
Click here to see answer by Edwin McCravy(8909)

Question 93574: Solve the quadratic equation by completing the square.
x^2-6x-3=0
Click here to see answer by jim_thompson5910(28595)

Question 93575: Use the quadratic formula to solve the following equation.
3x^2-2x+1=0
Click here to see answer by jim_thompson5910(28595)

Question 93573: Solve for x.
x^2+4x+4=7
Click here to see answer by jim_thompson5910(28595)

Question 93653: Solve the equation algebraically.
2x-x^2-18x+9=0
Click here to see answer by jim_thompson5910(28595)

Question 93691: A number is drawn at random from the numbers 1 through 20. The probability the number is a multiple of 3 is:

A box contains 4 red and 5 green balls. Three balls are drawn. The probability 2 red and 1 green are drawn is:

Click here to see answer by stanbon(57356)

Question 93698: 1) For the grouped data:

Score Frequency
90-100 8
80-89 12
70-79 26
60-69 14

An estimate of the mean is _____

2)The expected value of the following probability distribution is ___________.

xi 1 5 10 20 50
pi 0.30 0.40 0.10 0.15 0.05

3) Of 200 students surveyed 40 subscribe to Time Magazine, 65 subscribe to Sports Illustrated, and 10 subscribe to both. If a student is selected at random, what is the probability the student subscribes to Time Magazine or Sports Illustrated?
4) A consumer's group checked the gasoline mileage (to the nearest mile per gallon) on 25 different cars. The following gives a summary of the findings.

Miles per Gallon Frequency
Less than 15 2
16-20 4
21-30 13
31-40 5
Over 40 1

What quantities can be obtained from the table?

Click here to see answer by stanbon(57356)

Question 93685: 1) The probability a basketball player makes a free throw is 0.60. Find the probability the player makes four out of 6.

2) In a binomial distribution, the probability of 25 successes, where n = 65 and p = 0.35 is
3) The probability that Andy studies math over break is 0.3 and the probability that Betty independently studies over break is 0.4. Find the probability Andy studies math over break and Betty doesn't.
4) The area under a normal curve between the scores for z = 2.20 and z = 0.85 is

Click here to see answer by stanbon(57356)

Question 94078: You know that subtracting 15 times a number from twice the square of the number results in an answer of -27. How do I write the equation to represent this?
Click here to see answer by checkley75(3666)

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, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 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, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250