Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 314637: solve the equation
3(-2x+1)= -5(x+1)
Click here to see answer by rapaljer(4671)

Question 314640: y=-2x+10

Click here to see answer by rapaljer(4671)

Question 314667: find the slope, if it exists, of the line containing the pair of points.
(-9,-18) and(-16,-20)
Click here to see answer by malaydassharma(59)

Question 314714: How do you know when an equation has infinitely many solutions?
How do you know when an equation has no solution?
Click here to see answer by solver91311(24713)

Question 314736: type of equation for 0=3x^2+y^2-12x-30y+181
Click here to see answer by solver91311(24713)

Question 314810: Please help me with the answer to this question f(x)=9x+5,g(x)=7x-8
find (fg)(x) thank you
Click here to see answer by Fombitz(32388)

Question 314805: 5-2(x+7)=4(x-3)+6
Click here to see answer by nyc_function(2741)

Question 314806: 2x+3(x-5)=15-(x-12)
Click here to see answer by nyc_function(2741)

Question 314808: 1/6x+4/3=1/2x+7/3
Click here to see answer by Fombitz(32388)

Question 314804: 5(x+7)+1=2-(x-3)
Click here to see answer by Fombitz(32388)

Question 314877: The question asks to identify the type of equation. Conditional, inconsistent, or identity.
Problem: 2(1/2x + 3/2) - 7/2 = 3/2(x + 1) - (1/2x + 2)
I don't understand how the answer comes out to 2x - 1 = 2x -1 which means the equation is identity. Please explain step by step how this is the answer.
Thank you.
Click here to see answer by Fombitz(32388)

Question 314807: Please help me find the answer to this question:
f(x)=9x square-5x,g(x)=x square -2x-15
(f/g)(x)
Click here to see answer by Fombitz(32388)

Question 314918: Soybean meal is 16% protein and cornmeal is 9% protein. How many pounds of each should be mixed to get a 350lb mixture that is 12% protein?

Click here to see answer by Fombitz(32388)

Question 314809: 1/5(x+3)-4=1/2(x+7)
Click here to see answer by rfer(16322)

Question 314999: Evaluate the exponential equation for three positive values of x, three negative values of x, and at x=0. Show your work. Use the resulting ordered pairs to plot the graph; State the equation of the line asymptotic to the graph (if any). y=5^x
Click here to see answer by agille32(1)

Question 315036: Find the distance between the points with the given coordinates (4,-3) and (-4, 3)
Click here to see answer by Jstrasner(112)

Question 315084: 17-(-8)-4+6 I need to find the solution and know how to work the problem out!
Click here to see answer by rfer(16322)

Question 315084: 17-(-8)-4+6 I need to find the solution and know how to work the problem out!
Click here to see answer by nyc_function(2741)

Question 315113: Four times the sum of a number and -72 equals -16. Find the number.
Click here to see answer by mananth(16946)

Question 315112: Solve: X over 3 minus 10 equals negative 4
Click here to see answer by Fombitz(32388)

Question 315160: factor:
-7m^3n-28mn^3
Click here to see answer by Fombitz(32388)

Question 315202: Three numbers add up to 60.The first number is 1/3 of the second number. The third number is twice the second number. What are the three numbers?
Click here to see answer by ankor@dixie-net.com(22740)

Question 315302: what is two subtracted from a number
Click here to see answer by user_dude2008(1862)

Question 315447: Solve 125x+6=2x+5
Click here to see answer by jim_thompson5910(35256)

Question 315497:
If x>2, then divided by = which of the following

a. x-3/2
b. x-3/x-2
c. x-3/x+2
d. 3/2
Please show solution

x^2-x-6=(x-3)(x+2)
and
x^2-4=(x-2)(x+2)
in division(x+2) will be cancelled
so answer is x-3/x-2
that is option "b"
Click here to see answer by kumarrs91(1)

Question 315498: If x>2, then divided by = which of the following

a. x-3 divided by 2
b. x-3 divided by x-2
c. x-3 divided by x+2
d. 3 divided by 2
Please show solution
Click here to see answer by jim_thompson5910(35256)

Question 315496: 5x + 3 = 3x + 14
Click here to see answer by jim_thompson5910(35256)

Question 315455: What is x when x - √x - 2 = 0?

a -1 b 1 c 2 d 4 e none

Click here to see answer by Fombitz(32388)

Question 315565: Solve for X:
x+1/x+5=x+3/x-8
please show work
Click here to see answer by jim_thompson5910(35256)

Question 315665: The area A of a triangle with base b and height h is given by A=1/2bh. Find the area when b = 18 m (meters) and h = 20 m
Click here to see answer by Fombitz(32388)

Question 315668: Upon returning to the U.S. from Canada, Burgette exchanged her remaining 150 Canadian Dollars for 134.53 U.S. Dollars. What exchange rate did she receive? What exchange rate did she receive? Round to the nearest thousandth if necessary.
Click here to see answer by Fombitz(32388)

Question 315782: one number is 4 less than twice another number. if their sum is 11, what are the 2 number?
Click here to see answer by jim_thompson5910(35256)

Question 315790: 1. Two numebers have a sum of 26. Three times the first less twice the second is 3. Find the numbers.
2. Two numbers differ by 7. Three times the larger is five times the smaller olus 3. Find the length.
3. The length of a rectangle is 7cm more than twice the width. Find the dimensions if the perimeter is 62cm.
Click here to see answer by mananth(16946)

Question 315878: Explain how (-8x)^5 and -8x^5 are different.
Click here to see answer by Earlsdon(6294)

Question 315915: (x-11)(x-11)=20 x=?
Click here to see answer by Earlsdon(6294)

Question 315944: What is the equation needed to back tax % out of a number.
i.e. If you have $20,710 in sales including tax at 8.75 % what are the pre tax sales
Click here to see answer by rfer(16322)

Question 315912: y=3y+1
Click here to see answer by jim_thompson5910(35256)

Question 315998: The length of a rectangle is 5 ft more than its width and its area is 84 square feet. Find its width and length. Let x represent the width of the rectangle and translate the problem into an equation. Don't solve.
Click here to see answer by jim_thompson5910(35256)

Question 315996: a student is trying to solve the equation (x + 10)(x - 10)=7. The student has set x + 7 and x - 10 = 7 and found that two solutions x=3, x=17. The student checks the results by plugging inthe solutions into the original equation and finds they do not work. How would you advise the student?
Click here to see answer by checkley77(12844)

Question 316000: If y varies inversly with x & y=5 when x=7 what is the value of y when x=4
I got 8.75
Click here to see answer by jim_thompson5910(35256)

Question 315999: A student factored 5y^3 + 55y^2 +90y by first factoring out 5y to get
5y(y^2 + 11y + 18). He wrote the answer (y + 2)(y + 9) as the factored answer. Why is this answer wrong?
Click here to see answer by Alan3354(69443)

Question 316007: What is the solution of 5x - 2 + 3 = 32?
Click here to see answer by jim_thompson5910(35256)

Question 316079: I can't remember how to figure out this problem.
0.12 - 0.02 (x+3) = -0.05 (3-x)
Click here to see answer by jim_thompson5910(35256)

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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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, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 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30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690, 30691..30735, 30736..30780, 30781..30825, 30826..30870, 30871..30915, 30916..30960, 30961..31005, 31006..31050, 31051..31095, 31096..31140, 31141..31185, 31186..31230, 31231..31275, 31276..31320, 31321..31365, 31366..31410, 31411..31455, 31456..31500, 31501..31545, 31546..31590, 31591..31635, 31636..31680, 31681..31725, 31726..31770, 31771..31815, 31816..31860, 31861..31905, 31906..31950, 31951..31995, 31996..32040, 32041..32085, 32086..32130, 32131..32175, 32176..32220, 32221..32265, 32266..32310, 32311..32355, 32356..32400, 32401..32445, 32446..32490, 32491..32535, 32536..32580, 32581..32625, 32626..32670, 32671..32715, 32716..32760, 32761..32805, 32806..32850, 32851..32895, 32896..32940, 32941..32985, 32986..33030, 33031..33075, 33076..33120, 33121..33165, 33166..33210, 33211..33255, 33256..33300, 33301..33345, 33346..33390, 33391..33435, 33436..33480, 33481..33525, 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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