Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 332124: Find all real solutions to each question.
X^2-20=0

Click here to see answer by checkley77(12844)

Question 332122: Write each radical expression in simplified radical form.
Sq rt 3/sq rt 12

Click here to see answer by checkley77(12844)

Question 332123: Simplify each expression. Write answers in positive exponents. Assume all variables represent positive real numbers.
(3*a^-2/3)^-3

Click here to see answer by mananth(16946)

Question 332276: Hi, I really appreciate you taking your time to help!
I have a question that states
"Solve the rational inequality"
I'm not even sure if it is an equality, I have looked everywhere in the textbook and cannot seem to find anything close to it. The problem is
3x-1/x-8 -4
that is....3x-1 divided by x-8 then -4.
If this is indeed a rational inequality, please explain how I get the answer so that I will know next time. Thankyou so much.
Click here to see answer by jim_thompson5910(35256)

Question 332221: please show the check for the following equation

Click here to see answer by edjones(8007)

Question 332258: what is the sum of a number and 6?
what is twice a number and 6?
what is twice the sum of a number and 6?
what is the product of x and y?
what is twice the product of x and y?
what is the square of the product of x and y?
what is the product of x and y-squared?
what is twice the difference of a and b?
what is the difference of a and b-squared?
what is 3 less than 5 time the difference of a and b?
Click here to see answer by edjones(8007)

Question 332302: v-4(4-v)=-2(2v-1)
Click here to see answer by jim_thompson5910(35256)

Question 332312: 3(x-0.87)-2x=4.98
Click here to see answer by rfer(16322)

Question 332331: what is the y coordinate of the vertex of a parabola wit the following equation?
y=x^2-6x+14
Click here to see answer by nerdybill(7384)

Question 332331: what is the y coordinate of the vertex of a parabola wit the following equation?
y=x^2-6x+14
Click here to see answer by solver91311(24713)

Question 332333: I am having problems with simultaneous equations...and this one really has stumped me can you please help.
3c-2d=13
2c-3d=0
Click here to see answer by solver91311(24713)

Question 332361: Find two arithmetic means between -17 and -71.
Click here to see answer by Alan3354(69443)

Question 332363: If an object is in free fall, the sequence 16, 48, 80, ... represents the distance in feet that the object falls during the first second, during the second second, during the third second, and so on. How far will the object fall during the first 6 seconds?
Click here to see answer by Alan3354(69443)

Question 332364: Find two geometric means between 4 and 256.
Click here to see answer by Alan3354(69443)

Question 332392: a number divided by eight plus negative fifty is one hundred
Click here to see answer by rfer(16322)

Question 332434: find the 9th term og the geometric sequence
-8/9, -8/3, -8
Click here to see answer by Edwin McCravy(20054)

Question 332454: What is the difference between an equation and an expression?
Click here to see answer by Edwin McCravy(20054)

Question 332517: 4X(2)-12X-7=0
Click here to see answer by mananth(16946)

Question 332534: (2x^2y)^3 * (x^5y^3)^2
Please help.
Click here to see answer by vleith(2983)

Question 332530: x^2-16<= 0
Click here to see answer by vleith(2983)

Question 332540: -3x^7+ 42x^3
Please help.
Click here to see answer by vleith(2983)

Question 332520: 1.)Solve using the multiplication principle: -3/4x=-5/6
2.) Find the slope, if it exists, of the line containing the pair of points:
(9,3) and (10,-1)
Click here to see answer by rfer(16322)

Question 332481: the linear system has the solution (a,b,2)
2x-y-z=-3
x+2y-2z=-2
x+ky+z=5
determine the values of a,b and k
Click here to see answer by ankor@dixie-net.com(22740)

Question 332602: Find the distance between -4.4 and 6.9
Click here to see answer by checkley77(12844)

Question 332624: Suppose you�re given the formula R = s + 2t. If you know that s is three times greater than t, how
could you rewrite the formula?
A. R = 3(s + 2t) C. R = 5s
B. R = 3(s + t) D. R = 5t
Click here to see answer by nerdybill(7384)

Question 332761: A country has 221 mobile cellular telephones per 250 inhabitants. If the country's population is about 2,800,000 how many mobile cellular telephones does the country have? In your own words, using complete sentences solve the problem.

Click here to see answer by Jstrasner(112)

Question 332823: 4x-2=1
thank you
Click here to see answer by vleith(2983)

Question 332825: 3/4x=12
thankyou
Click here to see answer by unlockmath(1688)

Question 332822: 12=18-3x
thank you
Click here to see answer by Jk22(389)

Question 332824: 1/2x-3/4 = 1/4
thankyou
Click here to see answer by rfer(16322)

Question 332821: -5x-2=23
Thank you
Click here to see answer by rfer(16322)

Question 332902: I get confussed with the signs. Can you please explain the steps to the following examples.
x/2 + x/5=7/10
x-3/5 = 1-x/3
1.2x-2.2=5.6
2(x-4)=5/6(x+6)-6
Click here to see answer by solver91311(24713)

Question 332861: how do you show your work for the sum of 6 and a number is 11
11 - x = 6
is the answer
x = 5
Click here to see answer by checkley77(12844)

Question 332889: simplify do not use negative exponents in your anwser

Could someone please help me I do not know how to do this problem thank you
Click here to see answer by ankor@dixie-net.com(22740)

Question 332998: What does h equal and how do you write it out to solve the problem?

Click here to see answer by mananth(16946)

Question 333015: how do you work out 3(x-5) = 12 and what is the answer?
Click here to see answer by aseem(9)

Question 333015: how do you work out 3(x-5) = 12 and what is the answer?
Click here to see answer by Alan3354(69443)

Question 333016: what is the value of x and y in the equation: 1/2x+1/3y=2
Ihave tried up to x=4-2y/3
y=-3/2(x-4)
Click here to see answer by vleith(2983)

Question 333051: Erin is squaring numbers. She says that it is possible to get an answer that is smaller than the number she started with. Show how erin is correct.
Click here to see answer by nerdybill(7384)

Question 333069: please help me simplify the following:
a^-1-3a^-2/2^-2
Click here to see answer by benazir.sj@gmail.com(109)

Question 333067: please help me simplify the following:
(5u^2v/2uv^2)^2/(-3uv/2u^2v)^3
Click here to see answer by benazir.sj@gmail.com(109)

Question 333115: (|2.7 − 3| + 32 � |−3|) � (−3)
The above is the equation I was given. I am for some reason drawing a blank as to how to solve. Please help me!!!
Click here to see answer by jim_thompson5910(35256)

Question 333106: How do you solve this equation?
Click here to see answer by nerdybill(7384)

Question 333186: how do u do 90-(3x-7)=11x-1
Click here to see answer by rfer(16322)

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