Questions on Algebra: Equations answered by real tutors!

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Question 92635: I am trying to solve the equation: (1/(x-3))+(1/(x+3))=(10/(x^2-9))
Thanks in advance.
Click here to see answer by ankor@dixie-net.com(22740)

Question 92712: Here's my question: Solve the inequality: 9x-8<=7x+16
I'm not sure if i can just solve it or if i have to make some kinfd of chart thing i remember doing in algebra class?
Click here to see answer by stanbon(75887)

Question 92754:
Click here to see answer by Edwin McCravy(20054)

Question 92800: My car gets 27 miles to the gallon. If gasoline costs $3.23 per gallon, how far can I drive on $45.00 worth of gas?
I divided 3.23 by 45 getting 13.93. Then Multiplied 1.93 by 27 getting 378 miles as my final answer? Is this correct and did I solve it properly?
Thank you!!!!
Click here to see answer by bucky(2189)

Question 92811: X=80,000 Problem is 2,400,000/x-105

Question? How to ge rid of x-105 without multiplying both sides by 1/x-105. I would appreciate any assistance. Thanks.
Click here to see answer by stanbon(75887)

Question 92827: FIND AN X AND A Y THAT MAKS TIS EXPRESSION TRUE Y=4X-3
Click here to see answer by Earlsdon(6294)

Question 92842: WHAT IS THE VALUE OF 9+6 (6+4) DIVIDED BY 5

Click here to see answer by checkley75(3666)

Question 92846: add 1 1/2 inches and 26.2 centimeters, and express the result in feet.
I have multiplied (.39)(26.2)=10.22 inches
add 10.22+1.5 =11.72
This doesnt even make a foot? What did I do wrong? Please help. I really want to understand what to do and if I did any part of this correctly.
Thank you so much in advance!
Ann
Click here to see answer by checkley75(3666)

Question 92899: Write the equation of the line passing through(-3,-5) and (3,0).
Click here to see answer by jim_thompson5910(35256)

Question 92844: I really need help on this problem. I haven't taken algebra in years so im a little rusty.
Q: What is the remainder when x^3+5x^2-6x+10 is divided by x+3?
The book says that the answer is 46 but i'm not sure how to get that.
Thanks alot.

Click here to see answer by scott8148(6628)

Question 92900: Which of the ordered pairs (3,1), (0,-4), (-4,0), (-3,-7) are solutions for the equation x-y=4?
Click here to see answer by chitra(359)

Question 92901: Write the following phrase using symbols. Use the variable x to represent the number. Eight less than three times a number
Click here to see answer by chitra(359)

Question 92966: Rewrite the equation �7x + 8y = �40 as a function of x.
Click here to see answer by jim_thompson5910(35256)

Question 92968: Solve. �3(x + 2) + 4x = 5x + 18
Click here to see answer by prabhjyot(165)

Question 92968: Solve. �3(x + 2) + 4x = 5x + 18
Click here to see answer by jim_thompson5910(35256)

Question 92963: Which of the ordered pairs
(0, 0), (�2, 10), (�1, �5), (�3, 9)
are solutions for the equation y = 5x?

Click here to see answer by jim_thompson5910(35256)

Question 92989: Please help me solve 1/2p=1/3
Click here to see answer by ptaylor(2198)

Question 93016: Please help solve
z=4/3(pi)r^3 find (pi)
Click here to see answer by stanbon(75887)

Question 93024: If X-3 is a factor of X^4-3X^3+KX+3, what is the value of K?
Click here to see answer by Edwin McCravy(20054)

Question 93105: Choose the one alternative that best completes the statement or answers the question.
Solve by completing the square.
x^2 - 6x - 40 = 0
a) 10, -4 b) -10, 4 c)(-36, -4 d) square root of -40, negative square root of -40
I think the answer is d after I plugged in all the options, but I don't know how to prove it. When I try to use completing the square I get up to this point, 6 plus or minus the square root of 160 over 2 and I can't go any further. Thanks so much!!
Click here to see answer by stanbon(75887)

Question 93119: The length of a rectanble is three inches more than the width. The area of the rectangle is 180 inches. Find the width of the rectangle.
I know that the length is x + 3
and the width is x
so the equation must be x(x + 3) = 180, but I don't know where I keep messing up when I go to solve it. Thanks so much for your help!!
Click here to see answer by Nate(3500)

Question 93118: Find a general form equation for the line through the pair of points.
(1,4) and (8,-2)
I know I am supposed to use the equation Ax + By = C, but I don't know how to plug in for A, B, and C. Please help!! Thanks so much!!
Click here to see answer by jim_thompson5910(35256)

Question 93120: Simplify:
(3x + 4 / x + 6) - (2x / x + 1)
I worked this problem out until I got the answer (-5x + 4) / (7x - 6), but I'm not sure if it's correct or not. Thanks so much!!

Click here to see answer by stanbon(75887)

Question 93015: Please help me solve this problem
m=x+3y/2 find y
Click here to see answer by ankor@dixie-net.com(22740)

Question 92990: x^3 - 4x^2 - 21x = 0
Click here to see answer by scott8148(6628)

Question 93190: Can someone please help me solve this word problem. I am not able to come up with an inequality.
You have at least $30.00 in change that are dimes and quarters. Write an inequality that shows the different numbers of coins.
Thank you.
Click here to see answer by stanbon(75887)

Question 93200: I am confused with this problem. Can someone help?
f(x)=5x-1
Find the followinf for f(a-2.
Thanks.
Click here to see answer by ankor@dixie-net.com(22740)

Question 93197: I am having trouble. Can someone please help?
f(x)=4x-3
f(-1)
Thank you.
Click here to see answer by ankor@dixie-net.com(22740)

Question 93199: Can someone help solve this word problem?
P(x)=2.25x-7,000
a.)What is profit if 2,000 units are sold.
b.)What is profit if 5,000 units are sold.
c.)What is the break even points for sale?
Thank you.
Click here to see answer by ankor@dixie-net.com(22740)

Question 93219: I need help in solving this equation
3(2w+1)-2(w-2)=5
My solution is incorrect
6w+3 - 2w-4=5
4w-1 =5
Click here to see answer by jim_thompson5910(35256)

Question 93218: I need help in solving this equation
2(x+3) = -4(x+1)
This is how I started:
2x+6 = -4x - 4
2x + 6-6 = -4x-4-6
2x = -4x - 2
2x + 4x = -4x+4x-2
6x = 2
(my answer is incorrect)
Click here to see answer by jim_thompson5910(35256)

Question 93228: Can someone please help?
-3x+4y=11
Thank you.
Click here to see answer by tutorcecilia(2152)

Question 93267: The length of one of the equal legs of an isosceles triangle is 8 cm less than 4 times the length of the base. If the perimeter is 29 cm, find the length of one of the equal legs.
Click here to see answer by Earlsdon(6294)

Question 93323: Logarithims
Please solve 2log(x)=log{3x/4}-1
Thanks in advance, this is not from a book.
Click here to see answer by Nate(3500)

Question 93330: Please show me how to solve the problems such as:
4r -7 = 8r + 13, 5x - 8 = 6 - 2x, t/5 - 7 + 31 = 8(6-4), and
9-5(4-3) = -16 x/3 ("x over 3" and "t over 5 ").
Thank you.

Click here to see answer by jim_thompson5910(35256)

Question 93386: Evaluate. 5 � 4 � 2 � 42
Click here to see answer by checkley75(3666)

Question 93385: Write the following phrase using symbols. The quotient of p minus q, divided by 5
Click here to see answer by checkley75(3666)

Question 93379: solve the following
13m-17=6m+25
Click here to see answer by checkley75(3666)

Question 93469: stan has 52 quarters and nickels combined. if he has three times as many nickels as quarters, how much money does he have?
Click here to see answer by stanbon(75887)

Question 93469: stan has 52 quarters and nickels combined. if he has three times as many nickels as quarters, how much money does he have?
Click here to see answer by checkley75(3666)

Question 93378: solve the following
3m=7m+32
Click here to see answer by checkley75(3666)

Question 93494: 4x+2+5x
Click here to see answer by checkley75(3666)

Question 93568: I am having a hard time understanding the following equation;
(-2)(4)+5-6-[-2]
________________= ?
(-2)[9+(-5)]
What are the [] brackets used for in the equation? This is one equation.
thanks........
Click here to see answer by checkley75(3666)

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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33526..33570, 33571..33615, 33616..33660, 33661..33705, 33706..33750, 33751..33795, 33796..33840, 33841..33885, 33886..33930, 33931..33975, 33976..34020, 34021..34065, 34066..34110, 34111..34155, 34156..34200, 34201..34245, 34246..34290, 34291..34335, 34336..34380, 34381..34425, 34426..34470, 34471..34515, 34516..34560, 34561..34605, 34606..34650, 34651..34695, 34696..34740, 34741..34785, 34786..34830, 34831..34875, 34876..34920, 34921..34965, 34966..35010, 35011..35055, 35056..35100, 35101..35145, 35146..35190, 35191..35235, 35236..35280, 35281..35325, 35326..35370, 35371..35415, 35416..35460, 35461..35505, 35506..35550, 35551..35595, 35596..35640, 35641..35685, 35686..35730, 35731..35775, 35776..35820, 35821..35865, 35866..35910, 35911..35955, 35956..36000, 36001..36045, 36046..36090, 36091..36135, 36136..36180, 36181..36225, 36226..36270, 36271..36315, 36316..36360, 36361..36405, 36406..36450, 36451..36495, 36496..36540, 36541..36585, 36586..36630, 36631..36675, 36676..36720, 36721..36765, 36766..36810, 36811..36855, 36856..36900, 36901..36945, 36946..36990, 36991..37035, 37036..37080, 37081..37125, 37126..37170, 37171..37215, 37216..37260, 37261..37305, 37306..37350, 37351..37395, 37396..37440, 37441..37485, 37486..37530, 37531..37575, 37576..37620, 37621..37665, 37666..37710, 37711..37755, 37756..37800, 37801..37845, 37846..37890, 37891..37935, 37936..37980, 37981..38025, 38026..38070, 38071..38115, 38116..38160, 38161..38205, 38206..38250, 38251..38295, 38296..38340, 38341..38385, 38386..38430, 38431..38475, 38476..38520, 38521..38565, 38566..38610, 38611..38655, 38656..38700, 38701..38745, 38746..38790, 38791..38835, 38836..38880, 38881..38925, 38926..38970, 38971..39015, 39016..39060, 39061..39105, 39106..39150, 39151..39195, 39196..39240, 39241..39285, 39286..39330, 39331..39375, 39376..39420, 39421..39465, 39466..39510, 39511..39555, 39556..39600, 39601..39645, 39646..39690, 39691..39735, 39736..39780, 39781..39825, 39826..39870, 39871..39915, 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