Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 124576: Can I have some help finding an equation of the line through (0, 9) and parallel to the line passing through (1, 7) and (-6, 3)?
Click here to see answer by iluvbuilding429(41)

Question 124684: Let A=(2,-7) and B=(8,5). Find the equation of the line that contains the midpoint of AB and is perpendicular to AB. You may write your equation in either general or slope-intercept form.
I figured out the midpoint but I don't know where to go from there. The midpoint is (-3,-6). What next?
Thank you for your help!!!
Click here to see answer by gems(12)

Question 124703: Write the equation of the line with slope �7 and y-intercept (0, 5).
Click here to see answer by jim_thompson5910(35256)

Question 124706: t/9-7=-5
Click here to see answer by jim_thompson5910(35256)

Question 124622: Hi! Can I have some help finding an equation of the line through (7, 8) and parallel to the line 4x - y = 5?

Click here to see answer by iluvbuilding429(41)

Question 124741: help me set up this equation
(3x - 2y)to the second power (exponent)=
Click here to see answer by checkley71(8403)

Question 124801: Hi Can I have some help with this problem?
Write an equation that expresses the statement. Use k as the constant of variation.
A is inversely proportional to the square of t and is inversely proportional to the cube of x.
Click here to see answer by stanbon(75887)

Question 124803: Hi Can I have some help with this problem?
Write an equation that expresses the statement. Use k as the constant of variation.
S is directly proportional to the square root of r and is directly proportional to the square of t.
Click here to see answer by stanbon(75887)

Question 124849: solve for x
x+3
____ = t^2
t
Click here to see answer by solver91311(24713)

Question 124849: solve for x
x+3
____ = t^2
t
Click here to see answer by stanbon(75887)

Question 124844: one number is 5 times as large as another number and the sum is 78
Click here to see answer by iluvbuilding429(41)

Question 124826: How would you solve this equation?
x(x+1/3)(2x-3)=0
Click here to see answer by bucky(2189)

Question 124941: How would you solve this equation?
2x(3x-5)=0
Click here to see answer by jim_thompson5910(35256)

Question 124819: Hi Can you help me solve the following problem?
Use the given information to find the constant of proportionality.
W is inversely proportional to the square of r. If r = 2, then W = 10.
k =
Click here to see answer by scott8148(6628)

Question 124943: How would you solve this equation?
a^2-3=2a
Click here to see answer by jim_thompson5910(35256)

Question 124943: How would you solve this equation?
a^2-3=2a
Click here to see answer by stanbon(75887)

Question 124943: How would you solve this equation?
a^2-3=2a
Click here to see answer by bucky(2189)

Question 124944: How would you solve this equation?
2w^2=18w
Click here to see answer by stanbon(75887)

Question 124817: Hi. I need some help with the following problem. Thanks
Use the given information to find the constant of proportionality.
S varies jointly as p and q. If p = 3 and q = 7, then S = -21.
k =
Click here to see answer by bucky(2189)

Question 124991: Help. the problem is (3x -2y)*the second power
the answer is 9x* -12xy +4y*
and I'm not getting that, I'm missing a step showing -12xy
is there anyway you can break down each step to show 9x* -12xy +4y
Click here to see answer by checkley71(8403)

Question 124997: Each year,your school organizes a carnival to raise money for a class trip. This year, a total of 1026 people attended the carnival. By what percent did the attendance increase from last year to this year?

Ive been having trouble trying to convert this problem any with this equation would be Greatly appreciated.Thanks

Click here to see answer by checkley71(8403)

Question 125002: In excersise 33-41,Use the given information to find the given amount.
41. Original price: $200
Sales tax:6%
Any help with this equation would be Greatly appreciated.
Click here to see answer by checkley71(8403)

Question 124998: In excersise 33-41,Use the given information to find the given amount.
38. Wholesale price: $88
Markup Percent: 50%
Any help with this equation would be Greatly appreciated.
Click here to see answer by checkley71(8403)

Question 125000: In excersise 33-41,Use the given information to find the given amount.
39. Original Price: $15
Discount Percent:20%
Any help with this equation would be Greatly appreciated.
Click here to see answer by checkley71(8403)

Question 125003: Use the given information to find the given amount.
You want to order a new computer. The manufacturer is offering a dicount of 12% off the original price of the computer. With the discount $924.What is the original price of the computer?
Any help with this equation would be Greatly appreciated.
Click here to see answer by checkley71(8403)

Question 125001: In excersise 33-41,Use the given information to find the given amount.
40. Food bill: $20
Sales tax: 5%
Any help with this equation would be Greatly appreciated.
Click here to see answer by checkley71(8403)

Question 125009: Simplify. Write answer in postitive exponents only.
(b^2)^-6
_1/b^8__________
b^-4
Click here to see answer by mathruthie(1)

Question 125015: Find the axis of symmetry.
y=x^2-9x-2
Click here to see answer by jim_thompson5910(35256)

Question 125015: Find the axis of symmetry.
y=x^2-9x-2
Click here to see answer by josmiceli(19441)

Question 125027: Hi. I'm having trouble with the following problem. Can you help me?
Use the given information to find the constant of proportionality.
t is jointly proportional to x and y and inversely proportional to r. If x = 33, y = 2, and r = 11, then t = -30.

Click here to see answer by MathLover1(20849)

Question 125051: 4 2nd power + 2 x 7 � (5 x 4 � 15)
Click here to see answer by checkley71(8403)

Question 125177: Solve by clearing fractions
1/2y - 5 + 3/4y = 1/4 + 2y
Click here to see answer by jim_thompson5910(35256)

Question 125224: Each year, your school organizes a carnival to raise money for a class trip. This year, a total of 1026 people attended the carnival.Last year,a total of 950 people attended the carnival.By what percent did the attendance increase from last year to this year.

Any help with this equation would be Greatly appreciated:}
Click here to see answer by checkley71(8403)

Question 125225: For an account that earns simple annual interest,find the interest and the balance of the account.
P= $4500 ,r = 4%,t = 15 years
Any help with this equation would Greatly appreciated.
Click here to see answer by checkley71(8403)

Question 125228: Find the unknown qanity for an account that earns simple annual interest.
P= $250, r = 8%,t = 6 years
Any help with this equation would be Greatly appreciated.
Click here to see answer by checkley71(8403)

Question 125226: For an account that earns simple annual interest,find the interest and the balance of the account.
P = $250, r = 8%,t = 6 years
Any help with this equation would Greatly appreciated.
Click here to see answer by checkley71(8403)

Question 125227: Find the unknown qanity for an account that earns simple annual interest.

A = $6240, P = $4000 r =____, t = 7 years
Any help with this equation would be Greatly appreciated.
Click here to see answer by checkley71(8403)

Question 125207: Hello: I am studying for the clep exam for college level algebra. this is a problem in the clep study guide..it gives the problem and the answer, but not the steps. I am not sure of the steps, could you show me the steps taken to arrive at the answer? thank You
(2x-1)^2= 4x^2-4x+1
Click here to see answer by stanbon(75887)

Question 124754: I have 7 bags of marbles. There are 200 marbles in total.
bag 1 + bag 2 = 57 marbles
bag 2 + bag 3 = 83 marbles
bag 3 + bag 4 = 71 marbles
bag 4 + bag 5 = 43 marbles
bag 5 + bag 6 = 66 marbles
bag 6 + bag 7 = 43 marbles
How many marbles are in each bag?

Click here to see answer by ankor@dixie-net.com(22740)

Question 125261:
w + 4/8 = w + 10/5
Click here to see answer by Fombitz(32388)

Question 125261:
w + 4/8 = w + 10/5
Click here to see answer by checkley71(8403)

Question 125290: Hi. Can I have some help with functions?
Evaluate the function at the indicated values.
h(t)=t+1/t;
h(1),h(-1),h(2),h(1/2),h(x),h(1/x)

Click here to see answer by ilana(307)

Question 125268: Find the unknown qanity for an account that earns simple annual interest.
A = $579, P = $300,
r = 6.2%, t=___
Any help with this equation would be Greatly appreciated.
Click here to see answer by josmiceli(19441)

Question 125341: the fill pipe for a tank can fill it in 4 hours, and the drain pipe can do it in 2. If both pipes are accidentally opened, how long will it take to drain a half filled tank? HELP!!! the answer is 2 hours, but don't know how to get there. HELP!!!
Click here to see answer by stanbon(75887)

Question 125376: hi can I have some help with this function?
Use the function to evaluate the indicated expressions and simplify.
f(a), f(a+h), and f(a+h)-f(a)/h, where h does not equal 0.
Click here to see answer by stanbon(75887)

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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