Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 367415: Hi, I have to write � as a product of linear factors.
Since , I determined that
Then I was able to factor some more below, but I believe I should be taking the square root of the equation at some point, just not sure where.

Thanks for any help you can provide!
Click here to see answer by Fombitz(32388)

Question 367487: y=3x+7
3x+2y=-4
solve graphically then classify the system as consisten or inconsistent and the equations as dependent or independent
Click here to see answer by stanbon(75887)

Question 367499: saline (saltwater)solutions are often used for sore throats. a nurse has a saline solution that is 34% salt and the rest water. she also has a 61% saline solution. she wants to use a 50% solution with a particulas patient without wastin the existin solutions. hwo manyu milliliters (mL)of each solution would be needed in order to obtain 120mL of a mixture that is 50% salt?
Click here to see answer by robertb(5830)

Question 367591: Find the discriminant of this equation and tell if the quadratic equation has 2 real solutions, one real solution, or two imaginary solutions:
9x^2 - 64 = 0
Click here to see answer by robertb(5830)

Question 367588: Solve this quadratic inequality and show answer in interval notation:
4x^2 - 12x + 9 > 0
Click here to see answer by robertb(5830)

Question 367607: Find the slope, if it exists of the line containing the pair of points
(-14, -11) (-19, -13)

Click here to see answer by mananth(16946)

Question 367606: Find the slope if it exists
x+8y=16
need to know how to solve this problem and how to either write it out in integer or simplified fraction
Click here to see answer by mananth(16946)

Question 367605: Find teh intercepts and then use them to graph teh equation
5y-15=5x
Click here to see answer by mananth(16946)

Question 367590: A polynomial P(x) and a divisor d(x) are given. Use long division to find the
quotient Q(x) and the remainder R(x) when P(x) is divided by d(x), and
express P(x) in the form d(x)∙ Q(x) + R(x).
P(x) = x4 + 3x2 + 18 d(x) = x2 � 3

Click here to see answer by Jk22(389)

Question 367582: (x+2)(x-3)=44
Click here to see answer by Jk22(389)

Question 367593: Solve by factoring
4x^2 - 3x -6 = 0
Click here to see answer by robertb(5830)

Question 367636: Hi,
I'm stuck on this problem and dont know where to begin. Can any tutor help me please.

-2/5(10c + 15)=10

Thank you!!
Click here to see answer by ewatrrr(24785)

Question 367635: Hello,
I'm seeking help with the following math problem below, any help would be appreciated.
(1/2)a + (3/4)b - c
when a=8, b=4 and c=-2
Thank You!
Click here to see answer by ewatrrr(24785)

Question 367648: I tried to work this problem out but dont know if it's right. Can a tutor look over this for me please.
x+y-5z
x=-2, y=3, and z=-2

My answer: 11?
Click here to see answer by Fombitz(32388)

Question 367653: This one is a hard one.. I'm stuck and any help from a tutor will be appreciated.
Simplify problem:
[2 1/2][3/4][-5/6]

Thank You!!
Click here to see answer by amoresroy(361)

Question 367653: This one is a hard one.. I'm stuck and any help from a tutor will be appreciated.
Simplify problem:
[2 1/2][3/4][-5/6]

Thank You!!
Click here to see answer by Fombitz(32388)

Question 367717: Solve for x. V = 1/3xr^3
Click here to see answer by Fombitz(32388)

Question 367719: What is Forty-seven thousandths of what number is 1.41?
Click here to see answer by Fombitz(32388)

Question 367802: 9x-(7x-3)=19
Click here to see answer by Fombitz(32388)

Question 367947: If f(x)-1/393x62) what is f(-3)?
Click here to see answer by Fombitz(32388)

Question 367965: If f(x)=1/3(3x^) what is f(-3)?
Click here to see answer by Fombitz(32388)

Question 368052: My son is having trouble on this question:
7-15x=-5(3x-4)
I believe I have the correct answer, I just need the proof.
Thank you :)
Click here to see answer by Fombitz(32388)

Question 368011: -x^2+x+20=0
Click here to see answer by edjones(8007)

Question 368009: 36/54=2x/6
Click here to see answer by edjones(8007)

Question 368009: 36/54=2x/6
Click here to see answer by checkley77(12844)

Question 368084: three times a number , decrease by 8 , is the same as twice the number increase by 15. find the number
Click here to see answer by robertb(5830)

Question 368113: 6=4V+2
Click here to see answer by robertb(5830)

Question 368169: 11y+5=-15+6y
Click here to see answer by jim_thompson5910(35256)

Question 368189: Need to know how to solve the problem m+12/9m=5/9
Click here to see answer by jim_thompson5910(35256)

Question 368214: how do you solve for w: 4w+40=w+15
Click here to see answer by jim_thompson5910(35256)

Question 368214: how do you solve for w: 4w+40=w+15
Click here to see answer by Quinn Harper(1)

Question 368263: Find the value of x:
x^-2 = 1/36
I took the reciprocal of the index -2...
(x^-2)-1/2 = (1/36)^-1/2
I am stuck right here. Can anyone provide me with step by step solutions? Thank you so much and have a nice day!
Click here to see answer by mananth(16946)

Question 368323: how do I solve
65x + 55y = 2440
Click here to see answer by amoresroy(361)

Question 368323: how do I solve
65x + 55y = 2440
Click here to see answer by Fombitz(32388)

Question 368247: Please help me solve this word problem.
30 students bought pennants.
The plain pennants cost $4.
The fancy pennants cost $8.
The total cost if all pennants is $186.
How many fancy pennants were purchased?
Click here to see answer by Fombitz(32388)

Question 368246: i need this equation to be solved, please. (:
(4x-5)/(2x+1)=(2x-1)/(x+2)
Click here to see answer by Fombitz(32388)

Question 368281: solve the exponential equation:
3(x2+5x) = 1/81
Click here to see answer by Fombitz(32388)

Question 368357: Please help me solve this problem.
3
________ -
2x-4
6
________
x^2-4

Click here to see answer by Fombitz(32388)

Question 368384: 6p-9ps+4q-6qs
Click here to see answer by Fombitz(32388)

Question 368282: Find the approximate point(s) of intersection of the pair of equations. You may use your graphing utility (write an explanation including keys that you entered).
2.3x + 3.8y = 11.4 and y = (3.1)ln(x - 2.05)
A) (3.4041, 0.9396)
B) (3.3056, 0.9411)
C) (3.4056, 0.9411)
D) (3.2056, 0.9311)
E) none of the above

Click here to see answer by Fombitz(32388)

Question 368428: Solve each equation for the variable indicated. 4=r t for t (here are the steps I did for that problem)
4=r t , -r 4=r-r t , -1(-r) 4=t, r+4=t but the answer in the back of the book reads t=4/r I don't know how to get to that answer.

Click here to see answer by Fombitz(32388)

Question 368381: 3g-3t+2mg-2mt
Click here to see answer by Fombitz(32388)

Question 368458: how do i solve this problem?
2x squared+3xy-4y squared
when x=2 and y=-4
Click here to see answer by Fombitz(32388)

Question 368515: I'm not sure where to start on this equation. I know I should have a common denominator, which I think is 4. The instruction is-Solve each equation for the variable indicated x/2=y/4 for x
Click here to see answer by Fombitz(32388)

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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39916..39960, 39961..40005, 40006..40050, 40051..40095, 40096..40140, 40141..40185, 40186..40230, 40231..40275, 40276..40320, 40321..40365, 40366..40410, 40411..40455, 40456..40500, 40501..40545, 40546..40590, 40591..40635, 40636..40680, 40681..40725, 40726..40770, 40771..40815, 40816..40860, 40861..40905, 40906..40950, 40951..40995, 40996..41040, 41041..41085, 41086..41130, 41131..41175, 41176..41220, 41221..41265, 41266..41310, 41311..41355, 41356..41400, 41401..41445, 41446..41490, 41491..41535, 41536..41580