Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 327979: Given the Cartesian equation of a circle in the form
x2 + y2 + 4x + 6y = 12
find by completing the squares, the centre coordinates of the circle and the radius. Hence sketch the graph of
the circle, taking care to label the x-axis, the y-axis and the origin
Click here to see answer by Fombitz(13828)

Question 328163: solve the system
x-y+z=-4
x+2y-z=-2
x+y-4z=1
Click here to see answer by Fombitz(13828)

Question 328169: simplify if possible
(9)^-3/2
Click here to see answer by Fombitz(13828)

Question 328166: Sketch the graph of the following equation on your own paper, then make the correct graph below.
5x + y = 4
Click here to see answer by nyc_function(2733)

Question 328238: I am totally lost on this! A=P+P rt; r (Business)
The options are: A) r=A/1-Pt B) r=A-P/Pt C)r=PA/1+t
D)r=1+Pt/A E)r=1/A(1+Pt)
Click here to see answer by user_dude2008(1861)

Question 328238: I am totally lost on this! A=P+P rt; r (Business)
The options are: A) r=A/1-Pt B) r=A-P/Pt C)r=PA/1+t
D)r=1+Pt/A E)r=1/A(1+Pt)
Click here to see answer by Fombitz(13828)

Question 328477: find the slop line though (8,0)and (0,4)
Click here to see answer by solver91311(16868)

Question 328485: Find an equation of the line passing through the two points. Write the equation in standard form.
Through (1,9);perpendicular to x=5
Thank you!
Click here to see answer by Fombitz(13828)

Question 328518: write the equation of the line passing through point (-2,4) and parallel to the x-axis.
Click here to see answer by stanbon(57214)

Question 328523: write the equation of the line that is parallel to the line y=-3x+1 and passes through the point (4,2)
the answer i got is 3x+y=14
i want to know if this is right
Click here to see answer by Fombitz(13828)

Question 328521: write the equation of a line perpendicular to the y-axis and passing through the point (5,-3)
Click here to see answer by stanbon(57214)

Question 328475: is this a solution 5x+y=23;(4,3)
Click here to see answer by Fombitz(13828)

Question 328525: write the equation of the line that is perpendicular to the line y = 2/3x - 7 and passes through the point (4,1)
the answer i got is 3x+2y=14
i want to see if this is right
Click here to see answer by josmiceli(9645)

Question 328482: Find the equation in slope-intercept form of the ine satisfying the conditions.
Slope -3/8; b=55/8
Thank you!

Click here to see answer by Fombitz(13828)

Question 328483: Find an equation of the line passing through the two points. Write the equation in standard form.
(8,2) and (3,6)
Thanks!
Click here to see answer by solver91311(16868)

Question 328558: Write an equation of the line going through (-3,-3) and parallel to y=x+3 in standard form.
Click here to see answer by checkley77(12569)

Question 328296: The chief of police for smalltown USA notice that, not including himself, 3/5 of his police force carries firearms.
If he include himself, 5/8 of his force carries fairearms. How many people on his force do not carry firearms?

a) 5
b) 6
c) 11
d) 16
e) 24

Click here to see answer by ankor@dixie-net.com(15622)

Question 328476: what is the intercepts 4x+y=-4
Click here to see answer by checkley77(12569)

Question 328597: A sofa and a chair cost $850 as a set. The sofa cost $200 more than twice as much as the chair.
The two equations that model this situation are:
S = 850 - C
C = (1/2)S - 100
What is the cost of the sofa?
Cost of Sofa = $ __.00
Click here to see answer by solver91311(16868)

Question 328745: C = 4r(n + p)
solve for n.
Click here to see answer by Fombitz(13828)

Question 328745: C = 4r(n + p)
solve for n.
Click here to see answer by nyc_function(2733)

Question 328833: How do I graph the equation using the slope and the y-intercept?
y=6/5x+7 (the 6 and 5 is suppose to be a fraction)
Please help been stuck on it for hours.... Thanks

Click here to see answer by Fombitz(13828)

Question 328872: 16+8r-4r+4=24
step by step?
Click here to see answer by Fombitz(13828)

Question 328867: The sum of two numbers is -18. One number is 2 greater than 3 times the other. Find the product of the number
Click here to see answer by checkley77(12569)

Question 328912: Factor the trinomial 8x^2+6x-35
Click here to see answer by scott8148(6628)

Question 328968: Solve each equation.
4w-1 - w-1 = w-1
____ ___ ___
3w+6 3 w+2
Click here to see answer by stanbon(57214)

Question 328971: Solve each equation.
4w-1 - w-1 = w-1
over over over
3w+6 3 w+2
Click here to see answer by stanbon(57214)

Question 328970: Solve each equation.
4w-1 - w-1 = w-1
over over over
3w+6 3 w+2
Click here to see answer by stanbon(57214)

Question 328967: Solve each equation.
4w-1 - w-1 = w-1
____ ___ ___
3w+6 3 w+2
Click here to see answer by stanbon(57214)

Question 328974: the quotient of three times a number and five is the difference of ten and a number
Click here to see answer by stanbon(57214)

Question 328979: When you multiply the two numbers you get a product of 225. When you add these same two numbers you get 30. What are the two numbers?
Click here to see answer by Alan3354(30945)

Question 328997: 27 1/2 + 7x/10 = 13/20
Click here to see answer by stanbon(57214)

Question 328987: Classify each system as consistent or inconsistent:
{2x+3(y-2)=0
{-3y=2(x-4)
Click here to see answer by stanbon(57214)

Question 328901: find the composition
f (x) = -2x-2 and g (x)= x^2+x
find F of g (5)
Click here to see answer by nyc_function(2733)

Question 328999: a/2 + 1/5 = 17
Click here to see answer by unlockmath(1599)

Question 328900: solve the system
7x-y-z= -32
x-4y+z= -25
6x+3y-2z = -7
Click here to see answer by Fombitz(13828)

Question 328981: Use a system of equations in two varibles to solve this problem:
A woman invested some money at 8% and some at 9%. The interest on the combined investment of $10,000 was $840. How much was invested at 9%
Click here to see answer by mananth(12270)

Question 328978: Graph each equation:
2(x+1)-y=4

Click here to see answer by mananth(12270)

Question 329046: solve
A+2B+2C=27
A+B+C=16
2A+B+2C=27
Click here to see answer by JBarnum(2044)

Question 329039: solve
3x-y=-2
4y=12x-16
Click here to see answer by JBarnum(2044)

Question 329101: What is the vertex of f(x)=1/2x
Click here to see answer by Fombitz(13828)

Question 328983: Graph each equation:
2y=8
Click here to see answer by checkley77(12569)

Question 329095: A student opens a book to two facing pages. The product of the page numbers is 2550. What are thepage numbers?
Click here to see answer by mananth(12270)

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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, 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, 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