Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 88142: + (-10) + 1Use addition rules to find the sum:
6
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 88126: I know the answer is 5 and 12 but I can't get it to show as an equation (I must show my work and explann it in front of class tommorrow morning Help.
Click here to see answer by rapaljer(4667)

Question 88144: simplify the expression:
2 + 3x + (-3) + 9
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 88143: use the addition rules to find the sum:
-7 + (-4) + 2
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 88159: The tens digit of a number exceeds the units digit by 2. The sum of the digits is 1/7 of the number. What is the number?
Click here to see answer by longjonsilver(2297)

Question 88162: Rewrite the equation 4x – 6y = –30 as a function of x
Click here to see answer by rapaljer(4667)

Question 88108: Word problem #1
Need to make at least 12 heat and at least 20 radar missiles per month.
Production limits number of missiles to no more than 72 per month
Will sell the heat missilies for 312,000 and radar for 512,000.
How many of each should be sold to max profits per month?? What is the max profit?
Need:
Constraints
Objective Function
solution
So hard to work out - HELP!! thanks
lucyloo
Click here to see answer by ankor@dixie-net.com(15639)

Question 88081: Please place the following equations into y=
1.y<= 1.2x +8
2. y> -2x +4
3. y> 2x + 4
4. x<=3
5. y>=-2x +4
6. y<=2x +4
7. x>= 3
Thank you so much
lucyloo
Click here to see answer by jim_thompson5910(28504)

Question 88282: c = b / (a + b)
what does b = ?

Click here to see answer by longjonsilver(2297)

Question 88317: d = c - s/n ( for s)
a = 1/2 h (B + b) (for h)
30.
Crafts. Rose’s garden is in the shape of a trapezoid. If the height of the trapezoid
is 16 m, one base is 20 m, and the area is 224 m2, find the length of the other base.

The sum of two consecutive integers is 145. Find the two
integers.
Crafts. Yuri has a board that is 98 in. long. He wishes to cut the board into two
pieces so that one piece will be 10 in. longer than the other. What should the length
of each piece be?
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 88460: Find the missing number X in x/65=1/5
Click here to see answer by jim_thompson5910(28504)

Question 88056: if 3x-9=6,what is the value of 2x-6?
Click here to see answer by SandySharma(35)

Question 88486: I am having trouble with Equations, Iequalities, and Problem Solving can you help? please. 2x + 7 + 3x = 32
Click here to see answer by stanbon(57250)

Question 88502: write the equation of the line parallel to the y-axis that passes thru 2,5
Click here to see answer by stanbon(57250)

Question 88503: find the value of c such that the graph of 3x+c=5y has an intercept of (-4,0)
Click here to see answer by stanbon(57250)

Question 88533: Write the equation of the line passing through (-6,-7) and (-6,-1)
Click here to see answer by jim_thompson5910(28504)

Question 88652: 5/2t-t=3+3/2t
Click here to see answer by jim_thompson5910(28504)

Question 88678: After taking a math class a little too seriously Kelli decides that her happiness is a function of the number of books she buys and the number of movies she sees per month. In fact she decides that her happiness quotient is: H = M(B^2) where M is movies and B is books. She can buy books for $9 each on average and can get into movies for $6 if she goes to the matinee. So if she sees 3 movies and buys 2 books her happiness quotient is
H = 3(2^2) = 12. If she has $100 to spend, what’s the highest she can make her happiness quotient?

Click here to see answer by stanbon(57250)

Question 88707: I am to solve the following equations (there are two).
#1. x2(that is supposed to be squared)+3x=0

#2. x2(that is supposed to be squared)+7x+12=0
I tried doing the Zero Factor Porperty, but i am coming up with the wrong answers.
THank you in advance for your help!
Click here to see answer by jim_thompson5910(28504)

Question 88708: I am totally lost on this two question and need some help.
Solve and check the following eqaution for x:
x/x-5+2=5/x-5
and
5/x+6+2/x^2+7x+6=3/x+1 Thank you
Click here to see answer by stanbon(57250)

Question 88758: A=3B(2+D) MAKE D THE SUBJECT OF THE FORMULA
(X-2)(3X-X)=

CAN YOU PLEASE ANSWER THESE TWO
Click here to see answer by checkley75(3666)

Question 88833: Solve the equation (if possible) and check your soltuion.
4(x+3)-3=2(4-3x)-4
Click here to see answer by terbear1963(43)

Question 88914: 5x-3=42

Click here to see answer by gwedenn(1)

Question 88930: Help me solve this. Everytime I do a check, it does not balance. 5x-8x+10x=28-10x+3x
Click here to see answer by stanbon(57250)

Question 88931: These are exponential equations ( not that I know what the actually are); can someone please solve these before I die of stupidness!!!!
9^2x = 27^x - 1
5^n-1 = 1/ 25
25^x = 5^(x^2 - 15)
2^x * 4^x+5 = 4^2x-1
sqrt(3)^2x+4 = 9^x-2

Click here to see answer by stanbon(57250)

Question 88953: 10x+7=12x-13 Everytime I do this problem, I get -10. I know the answer is 3, but can you give me the steps as you solve it. Thanks.
Click here to see answer by tutor_paul(490)

Question 88920: Please can you help me in this question because am having alot of problem...
there it says....
in April 1998, one US dollar was worth 128.65 Japanese Yen. Tomoaki changed 20,000 Yen into dollars. How much did he receive? give your answer correct to 2 decimal places.

Click here to see answer by checkley75(3666)

Question 88913: Please can you help me with this question!!
5(x-3)=2o
Click here to see answer by praseenakos@yahoo.com(507)

Question 88911: How would I solve this
thank you
Solve. 19x – 3(5x – 0.065) = 3x + 0.615
Click here to see answer by praseenakos@yahoo.com(507)

Question 88917: Please can you help me in this question because am having alot of problem...
there it says complete the table of values for y=x-2-4x
Click here to see answer by praseenakos@yahoo.com(507)

Question 88918: Please can you help me in this question because am having alot of problem...
there it says complete the table of values for y=3-x
Click here to see answer by praseenakos@yahoo.com(507)

Question 89078: Tutor could you help me please?(k/2)(1/n) is equivalent to k/2 divided by ? Would the answer be (k/2)(1/n) is equivalent to k/2 divided by 2n?? I'm confused?
Also could someone please help me with this word problem? As a hurricane moved onshore at Virginia Beach, it's wind speed was measured at 85 miles per hour. As the eye of the storm passed over the beach the wind speed dropped by 65 mph. 30 minutes later the wind speed had risen by 55 mph. What was the speed at this point?
Thank you for your help!!
Click here to see answer by josmiceli(9661)

Question 89119: Find p(-3) and p(5) for the function:
p(x)=2x^4+3x^3-9x^2+16x+13
Click here to see answer by askmemath(368)

Question 89121: Solve the equation:
x^2+11x+18=0 by factoring
Click here to see answer by askmemath(368)

Question 89199: Find the solution sets.
4x^2 - 25 = 0
Click here to see answer by Nate(3500)

Question 89199: Find the solution sets.
4x^2 - 25 = 0
Click here to see answer by praseenakos@yahoo.com(507)

Question 89208: For the quadratic function Q(x)=x^2+5x-36, determine the exact location of the minimum.
Click here to see answer by Nate(3500)

Question 89255: What is -3(2y - 9) + y simplified?
Click here to see answer by checkley75(3666)

Question 89255: What is -3(2y - 9) + y simplified?
Click here to see answer by Earlsdon(6287)

Question 89296: Simplify the following:
1 3x2 + 4x + 3x2 - 4y

2. (5x - 2y) - (4x + 8y)
3. 3x3(2x2)
4. (-6a3b4)2
Can you PLEASE HELP ME WITH THESE! THANK YOU SO MUCH
Click here to see answer by stanbon(57250)

Question 89308: Tutor could you help me please? My problem is:
(x-2)x+(2-x)3x=x^2-2x+6x-3x^2=-2x^2+4x
Thank you!
Click here to see answer by LearnMath(1)

Question 89322: X + .085X = 743.75
Click here to see answer by Edwin McCravy(8882)

Question 89355: Factoring with a coefficient greater than 1
5yto the 2nd+7y-6
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 89355: Factoring with a coefficient greater than 1
5yto the 2nd+7y-6
Click here to see answer by jim_thompson5910(28504)

Question 89220: Factor completely:
x^2+6x+9
Click here to see answer by malakumar_kos@yahoo.com(315)

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, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 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