Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 309365: If f(x)= 5x^2 + 6 then evalutate f (3)
Click here to see answer by nyc_function(2733)

Question 309361: What is the inverse of f(x)= 3x-4
Click here to see answer by nyc_function(2733)

Question 309362: Simplify 5/12-sqrt2
Click here to see answer by Fombitz(13828)

Question 309366: Simplify 4x+12/3x * 6x/x^2-9
Click here to see answer by CharlesG2(828)

Question 309355: Write the quadratic equation given the sum of the roots equal 2 and the product of the roots equal 3/4
Click here to see answer by Fombitz(13828)

Question 309353: Which function is one to one
1 (1,2)(2,2)(3,5)(5,0)
2 (1,3)(2,4)(4,1)(0,2)
3 (1,1)(2,1)(3,4)(4,5)
4 (0,1)(1,0)(2,0)(3,2)
Click here to see answer by nyc_function(2733)

Question 309369: Find the amount that should be invested now to accumulate the following amount, if the money is compounded as indicated.
$14,000 at 10% compounded semiannually for 11 yr
Click here to see answer by nyc_function(2733)

Question 309356: The expression a^-2 b^3/a^4 ^-2 is equivalent to
Click here to see answer by Fombitz(13828)

Question 309456: If c is the measure of the hypothenuse, find the missing measure. Round to the nearest tenth, if necessary.
a=?
b=16
c=43
Click here to see answer by Theo(3458)

Question 309533: three times as many units of plywood is sold as lumber, the profit on the lumber is $25 per unit and the profit on the plywood is $40 per unit could you show me how to find how many units of lumber and plywood would be produced and sold to make a profit of $14,790
Click here to see answer by checkley77(12569)

Question 309532: the permiter of a rectangle is 164m and the length is 7m more than twice the width, could you show me how to find the width and the length?
Click here to see answer by checkley77(12569)

Question 309599: I can not remember how to solve a denominator math problem
here is the sample ($33,000 x 2/15) = $4,480
I do not know what to do with the 2/15

Click here to see answer by Earlsdon(6287)

Question 309637: The base of a triangle is one-third as long as its height. If the area of the trinagle is 24 square meters, how long is its base?
Click here to see answer by unlockmath(1599)

Question 309641: I need help finding the real solution to this equation.
q2 + 6q - 7 = 0
Click here to see answer by Alan3354(30959)

Question 309649: I need help finding the real solution to this equation.
(y - 2/3)^2 = 4/9
Click here to see answer by Alan3354(30959)

Question 309644: I need help finding the real solution to this equation.
49/2 - (1/4)x2 = 0
Click here to see answer by Alan3354(30959)

Question 309662: I need help finding the real solution to this equation.
q2 + 6q - 7 = 0

Click here to see answer by checkley77(12569)

Question 309658: I need to find the exact answer and simplify it using the rules for radicals.
Diagonal of a patio. Find the length of the diagonal of a
square patio with an area of 40 square meters.
Basic facts:
1. Area of a square = side2
2. Diagonal of a square = √2*side2

Click here to see answer by checkley77(12569)

Question 309655: I need to use the product and quotient rules to simplify.
√98/9
Click here to see answer by checkley77(12569)

Question 309651: I need to simplify the products and give exact answers.
(sqrt5 + 2)(sqrt5 - 6)
Click here to see answer by checkley77(12569)

Question 309650: I need help to simplify the products and I've exact answers.
(3sqrt3 - sqrt2)(sqrt2 + sqrt3)
Click here to see answer by checkley77(12569)

Question 309645: I need help finding the real solution to this equation.
3.67x2 + 4.35x - 2.13 = 0
Click here to see answer by checkley77(12569)

Question 309643: I need help finding the real solution to this equation.
(1/2)x2 + x = 1
Click here to see answer by checkley77(12569)

Question 309639: I need help finding the real solution to this equation.
3v2 + 4v - 1 = 0
Click here to see answer by checkley77(12569)

Question 309695: Give the equation of the line that passes through point (-5, -1) and is parallel to the line y= -1/4x-7.
Please help I am trying to work this problem and I do not remember how to work it.
Click here to see answer by jim_thompson5910(28476)

Question 309716: 1/4(8y+4)-17= -1/2(4y-8)
Click here to see answer by stanbon(57220)

Question 309657: 19. Find the median and range for the Pre – Algebra Test scores.
Pre – Algebra Test Scores
55 84 74 82 76 81
89 51 92 96 59 61
53 92 80 69 93 66

Click here to see answer by Fombitz(13828)

Question 309747: you deposit $3000 in an account that pays 6% annual interest. find the balance after 2 years if the interest is compounded quarterly?
Click here to see answer by palanisamy(496)

Question 309751: use long8 5=0.7740 and log8 4=0.6667 to evaluate log8 20??
Click here to see answer by Alan3354(30959)

Question 309793: Factor completly 81x^2 - 441y^2
I was able to break down the first part but had problems breaking down the 441y^2
Click here to see answer by stanbon(57220)

Question 309793: Factor completly 81x^2 - 441y^2
I was able to break down the first part but had problems breaking down the 441y^2
Click here to see answer by palanisamy(496)

Question 309792: The expression a^-2 b^3
divided by
1^4 b^-2 is equivalent to
I know since the terms are not equal you cant divide them but i wasnt sure if this was a problem where you would do factoring
Click here to see answer by stanbon(57220)

Question 309790: Graph the solution set of |6x-7|>or equal to 5
I was able to come up with the values of x(>or equal)to 2 and x (
Click here to see answer by stanbon(57220)

Question 309748: solve 5 raised to x+2=12?
Click here to see answer by ankor@dixie-net.com(15624)

Question 309749: use the chang of base formula to evaluate log6 15???
Click here to see answer by nerdybill(6948)

Question 309827: How would I simplify this expression?
6 / 3 - √18
Click here to see answer by ankor@dixie-net.com(15624)

Question 309839: on three consecutive passes, a football team gains 8 yards, loses 37 yard, and gains 10 yards. what number repesents the total net yardage
Click here to see answer by checkley77(12569)

Question 309868: find all solutions to x^3 - 6x +4 = 0. how many real and how many complex solutions? I can graph and get answers, but I'm not sure how to solve it otherwise.
Click here to see answer by Edwin McCravy(8880)

Question 309893: I'm not sure how to solve this problem. 8x-(4x+6)=6
I know I need to start with the parenthesis first so does that mean that (4x+6)= 10x ??? so if I was to simplify that it would be 8x-10x=6 but that does not look right. That is why I am asking for help because I do not know what step I skipped. Please advise...
thank you so much...
Click here to see answer by jim_thompson5910(28476)

Question 309741: I need help with how to solve this problem. Thanks!
1/x - 2/1 - x = 1/2
Click here to see answer by checkley77(12569)

Question 309952: the length of a rectangle is 31 centimeters less than five times its width. the area is 72 square centimeters. find the dimensions of the rectangle.
Click here to see answer by mananth(12270)

Question 309951: a rectangular parking lot has a length of 5 yards greater than the width. the area of the parking lot is 750 square yards. find the length and width.
Click here to see answer by mananth(12270)

Question 309947: How would I solve this equation?
2y^2 - 3y - 6 = 0
Click here to see answer by jim_thompson5910(28476)

Question 309978: If one number is half of another and their average is 15, what is the value of the smaller number increased by 2?
(A) 8 (B) 10 (C) 12 (D) 20 (E) 30

Click here to see answer by mananth(12270)

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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, 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20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740