Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 58900: A parsec is approximately 3.1 x 1016 meters. If the distance to the farthest observable galaxies is approximately 1.62 x 109 parsecs, approximately how many meters is it to the farthest observable galaxies?
please help me. thanks
Click here to see answer by stanbon(75887)

Question 58907: how can i solve the following?
Subtract 4x2 � 5x from the sum of 9x2 � 2 and 6x � 1.
Click here to see answer by uma(370)

Question 58917: What 2-digit number is three times the sum of its digits?
Click here to see answer by uma(370)

Question 59045: what is 9 + r = -7
Click here to see answer by uma(370)

Question 59045: what is 9 + r = -7
Click here to see answer by rcmcc(152)

Question 59010: -4y - (5y +6) = -7y + 3
Click here to see answer by funmath(2933)

Question 59075: Two airplanes leave the Atalnta airport at th esame time, traveling in opposite directions. One plane travels 30 miles per hour faster than the other. After 3 hours, the planes are 3150 miles apart. what is the rate of each plane?
Click here to see answer by checkley71(8403)

Question 59089: Paloma Rey drove to work on Wednesday at 40 miles per hour, an darrived one minute late. She left home at the same time on Thursday, drove 45 miles per hour, and arrived one minute early. How far does Ms. Rey drive to work?
Click here to see answer by jayanthi(5)

Question 59068: Can anyone please help me solve the following?
T=2π√L/32 for L
Click here to see answer by funmath(2933)

Question 59139: X over 4 -7 = 9 Not getting this one.
Click here to see answer by funmath(2933)

Question 59172: -0.8-y=1.9
Click here to see answer by checkley71(8403)

Question 59262: x/5=x-2/7
Click here to see answer by funmath(2933)

Question 59259: Please help me solve this equation, step by step:
4x + 8 = 6
------
2

Click here to see answer by Cintchr(481)

Question 59275: 4z+b=2z+c
Click here to see answer by tutorcecilia(2152)

Question 59303: how do you make equation that epuals to 31.
Click here to see answer by checkley71(8403)

Question 59306: -8-t=-25
8=b-3+19
16=8+s
----
-7 (8+s over -7)

It would be very helpful if you could help me solve these problems. Thank you.
Click here to see answer by funmath(2933)

Question 59372: 8z-7=3z-7+5z

Click here to see answer by Cintchr(481)

Question 59349: Solve for a, x=a+b-2ab How do I do this???? It's for school tomorrow so if you could help me as soon as you could that would be great!!
Click here to see answer by josmiceli(19441)

Question 59399: Could someone please help me with this problem?
I need to solve and show the equation used for the solution:
The sum of two numbers is 40. Their difference is 8. Find the two numbers.
Thanks,
Sher
Click here to see answer by funmath(2933)

Question 59408: how would you do this equation 2ax(multiplyed by)3b would you do this= 6ab
Click here to see answer by uma(370)

Question 59429: Can you please help me to solve this problem also?6y-3=5-7y
Click here to see answer by funmath(2933)

Question 59435: Determine whether the equation is a linear equation. If so, write the equation in standard form
3x=5y
Click here to see answer by uma(370)

Question 59597: If x is a number, what is the value of x in the equation: 99x divided by 9x equals eleven, My guess is 1.
Click here to see answer by tutorcecilia(2152)

Question 59595: In what shape can a farmer plant 10 trees, to make 5 rows of 4 trees each?
Click here to see answer by mcneal(1)

Question 59440: Derermine whether each equation is a linear equation. If so, write the equation in standard form
Click here to see answer by funmath(2933)

Question 59441: Derermine whether each equation is a linear equation. If so, write the equation in standard form
3/x+4/y=2
Click here to see answer by funmath(2933)

Question 59495: Hi! Please help solve the following problem:
Solve for x: 4x2+2x-7 = 13x+4
p.s. the 2 in 4x2 is an exponent, not a number.
I tried factoring and isolating the variable x to one side of the equation so that I could solve.
Thanks
Click here to see answer by checkley71(8403)

Question 59643: What is the solution to x/3+(2x+4)/4=(x-1)/6-(3-2x)/2
Click here to see answer by praseena(37)

Question 59657: Tell whether the given value of the varible is a solution of the equation.
4x+13=-9-3(x+9);x=-7.
Thank u for all of the help!
Click here to see answer by funmath(2933)

Question 59760: 150 = 300 + (50 / S)
What is S?
Click here to see answer by funmath(2933)

Question 59771: Tell wheather the given value of the varible is a solution of the equation.
4x+13=-9-3(x+9);x=-7.
Thanks for all the help!
Click here to see answer by funmath(2933)

Question 59769: Please solve the equation. 6(5g+2)=30g.
Thank u for all your help!
Click here to see answer by funmath(2933)

Question 59773: 3(x - 4) -4 = 5x + 6.9 - 3x
Click here to see answer by funmath(2933)

Question 59772: 2(4x + 15) = 8x + 3
Click here to see answer by funmath(2933)

Question 59766: 23=3x+7
Click here to see answer by funmath(2933)

Question 59774: 2(4x + 15) = 8x + 3
Click here to see answer by funmath(2933)

Question 59854: Solve by any method
-4x+3y=2
5x-2y=-3
Click here to see answer by funmath(2933)

Question 59865: Solve
�6(x + 3) � 10 = 3(�2x � 5) � 13
Click here to see answer by funmath(2933)

Question 59871: Solve
8x � 11 = 2x + 1
Click here to see answer by funmath(2933)

Question 59878: How to solve these problems? 4w-3w+2w=24
4(x+3)=20
-8+t/3=7
4y+3
____=9
7

Click here to see answer by checkley71(8403)

Question 59878: How to solve these problems? 4w-3w+2w=24
4(x+3)=20
-8+t/3=7
4y+3
____=9
7

Click here to see answer by tutorcecilia(2152)

Question 59858: Solve by any method
-4x + 3y = 2
5x - 2y = -3
Click here to see answer by checkley71(8403)

Question 59919: Solve by elimination
4x + 5y = -16
5x - 6y = -20
please help!
Click here to see answer by funmath(2933)

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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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