Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 331761: solve using addition and multiplication priinciple
7-10z+4>-11z+5
please note, there's a line under the > symbol. I do not know how to put a line under the > sumbol
Click here to see answer by mathmandotcom(31)

Question 331760: solve using mulitplication principle
-x/4>5

please note, there's a line under the > symbol. I do not know how to put a line under the > symbol.
Click here to see answer by mathmandotcom(31)

Question 331759: solve using addition principle
z+4>5
please note, there's a sign under the > symbol. I do not know how to put a line under the > sign.
Click here to see answer by nerdybill(6963)

Question 331758: graph on number line
x<-3
please note, the < is less then or equal to, i could not get a line under the < sign.
Click here to see answer by Alan3354(30993)

Question 331785: given the provided quadratic function
A. find the value of the discriminant
B. Use the descriminant to determine the number and type of solutions
C. find the x-intercepts
D- find the y-intercepts
Click here to see answer by Jk22(389)

Question 331832: (b+p)(b^2-bp+p^2) For this one I got b^3 am I right?
Click here to see answer by jrfrunner(365)

Question 331817: please use the standard from of a parabola given by to write an eqaution of a parabola that passes through the given points
(1,2)(-1,-6) and (2,-3)
Click here to see answer by ankor@dixie-net.com(15661)

Question 331847: is the answer to s^2+s-42=0 s=-7,6 ? that's what I got
Click here to see answer by Alan3354(30993)

Question 331851: Erin's age is 3 times Warren's. In 4 years she will be twice as old as he will be. How old is each? I know Erin is 12 and Warren is 4. How can I check this
Click here to see answer by checkley77(12569)

Question 331834: I tried to factor this one so please tell me if I'm right. c^3-2c^2-35 I got c(c-7)(c+5)
Click here to see answer by checkley77(12569)

Question 331818: please solve the provided quadratic equation by using the quadratic formula. show check

Click here to see answer by checkley77(12569)

Question 331862: solve using multiplication principle
-x/4=>-12
Click here to see answer by rfer(12670)

Question 331856: 13x^2+8x-14=0 value of the discriminate
Click here to see answer by mananth(12270)

Question 331938: the different between two positive integers is 36. one interger is three times as great as the other. Find the integers.
Click here to see answer by mananth(12270)

Question 331974: 15x^2+10x-1=0 I was asked to find the discriminant. I said is 10x-1 and did it have 2 imaginary solutions, 2 real solutions or 1 real solution. I would say 1 real. am i right?
Click here to see answer by Earlsdon(6287)

Question 331977: Hello, Im stuck can i please have some help. Thank you, kindly!
In 1995 the Life Expectancy of a certain country was 68.9 years. In 2002 it was 71.1 years. Let E represent the life expectancy in year T and let year T represent the number of years since 1995.
E(t) = __t+___
(round to the nearest tenth)
Use the function to predict the life expectancy in males in 2005.
E(10)= _____
(Round to nearest tenth)

Click here to see answer by nerdybill(6963)

Question 331983: The baseball player throws a ball, and the height of the ball (in feet) can be approximated by the quadratic function where x is the horizontal position of the ball measured in feet from the origin.
A. For what value of x will the ball reach its highest point? round to the nearest foot.
B. What is the maximum height of the ball? round to the nearest tenth of a foot.
Click here to see answer by nerdybill(6963)

Question 331971: 2x^2-3x=-7 I was asked to find the solution set. I used the quadratic equation and came up with -3+/- the square of 47/4 right?
Click here to see answer by Alan3354(30993)

Question 331967: (-3t)^2(2t^8)^3 when I did this one I squared - first, and took 2 to the 8th power giving me 9t(256t)^3 so then I multiplied them and came up with 2304t^3 power. Am I right so far. IF so then I would raise 2304 to the third power. am i right?
Click here to see answer by ankor@dixie-net.com(15661)

Question 332111: 2(2)^2+3(2)(-4)-4(-4)^2=-80
can you show how this was completed
Click here to see answer by checkley77(12569)

Question 332126: P(x)= - 0.08x^2 + 60x - 750 how many units will give a break even point for this product? I'm attempting to use the quadratic equation to solve however I am stuck.
Click here to see answer by ankor@dixie-net.com(15661)

Question 332201: 4.7 is what % of 18.3
Click here to see answer by nyc_function(2733)

Question 332279: I need help with this one please.
Graph the quadratic function
f(x)= 4(x+5)^2-1
Complete all of the steps required to find the information needed to be able to graph the function by hand.
Thank-you ahead of time. I sincerely appreciate your time.
Click here to see answer by jim_thompson5910(28598)

Question 332200: 30x-24>6(4x-1)
30x-24>24x-6
Click here to see answer by edjones(7569)

Question 332228: The braking distance (in feet) of a car going V mph is given by v is greater or equal to 0.
how fast would the car have been traveling for a braking distance of 150feet? round to nearest mile per hour.
Click here to see answer by edjones(7569)

Question 332261: What is the vertex of a parabola?
How do you determine the vertex of the parabola?
Demonstrate with an example.
Click here to see answer by jrfrunner(365)

Question 332319: y = x^2 - 2x - 3; find y-intercept and any x-intercepts.
Do I treat as a parabola where I replace x with 0 and solve for y? I have no idea how to approach - thank you for your help.
Click here to see answer by Alan3354(30993)

Question 332342: Can someone help me solve this please?
w^4-18w^2-2=0
What is the solution?

Click here to see answer by Alan3354(30993)

Question 332396: how do you find the product of the roots for this equation:
x^5-7x^2+6x-12=0
Thanks for any help!

Click here to see answer by solver91311(16897)

Question 332405: Hello
If a pro basket ball player has a verticle leap of about 20 inches what is his hang time? Use the hang time function V=48T^2
His hand time is ___seconds
simplify asnwer, type an integer,or decimal round to the nearest tenth
Thank you
Click here to see answer by Alan3354(30993)

Question 332417: Hello, Please help
A: solve 3x^2-5x-7=0
B: find the x-intercept of
F(X)=3x^2-5x-7
what are the soulutions x=
type an exact answers, using radicals as needed. Express complex numbers in terms of i use a comma to separate
Click here to see answer by Alan3354(30993)

Question 332514: how would i find the zeros of the quadratic function y=x^2+4-5=0?
Click here to see answer by Alan3354(30993)

Question 332512: If you are looking at a graph of a quadratic equation, how do you determine where the solutions are?
Click here to see answer by Alan3354(30993)

Question 332538: simplify and do not use negative exponents in the answer
(4x^5y^-6)^3
Click here to see answer by vleith(2825)

Question 332521: How do I find the roots of y=x^2-8x+7 by factoring and also by using the quadratic equation?
Click here to see answer by tutor_paul(490)

Question 332631: Two angles are supplementary if the sum of their measures is 180 degrees the measure of the first angle is 12 degrees less than two times the second angle
what are the two angles
Click here to see answer by benazir.sj@gmail.com(109)

Question 332709: Solve for x:

2x^2 + 3x +5 = 0
Click here to see answer by mananth(12270)

Question 332759: express using positive exponents, then if possible, simplify.
(3/u)^-4
Click here to see answer by AAfter Search(61)

Question 332757: express using negative exponents
1/x^5
Click here to see answer by AAfter Search(61)

Question 332783: college algebra
use an equality and the five step process to solve the problem
translate
reword
carry-out
check
state
dg's plumbing and heating charges $50 plus $65 per hour for emergency service. Bill remembers being billed just over $450 for an emergency call. how long to the nearest hour was the plumber at bill's house?
Click here to see answer by mananth(12270)

Question 332805: write a quadratic equation in the variable x having the given number as solution type the quation in standard form ax^2+bx+c=0 solution is 1, only solution
Click here to see answer by solver91311(16897)

Question 332810: I cannot find a step-by-step guide to show me how to work this equation to get an answer, My examples show to put equation into au^2 + bu + c = 0.
The problem is
w^4 - 12w^2 - 2 = 0
Put into above form it is
u^2 - 12u - 2 = 0
Then I am stuck. Do I use the quadratic formula and how do I change it back to get w's solution after solving for u? Thanks in advance.
Click here to see answer by solver91311(16897)

Question 332896: Find the vertex of the parabola formed by the following quadratic function: y = -x2 + 10x - 1
Click here to see answer by jrfrunner(365)

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