Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 916666: Hello!
if (x-2)squared = 25 and x < 0, what is the value of x?
Click here to see answer by lwsshak3(11628)

Question 916665: Hello!
This is my question:
solve the following inequality for y and simplify
2/3x + 3y = 6-x
Thanks!
Click here to see answer by Alan3354(69443)

Question 916668: Hello!
in an election, 2.8 million votes were cast and each vote was for either Candidate 1 or Candidate 2. Candidate 2 received 28,000 more votes than Candidate 1. What percent of the 2.8 million votes were cast for Candidate 1?

thank you
Click here to see answer by jim_thompson5910(35256)

Question 916769: 15y+1=x for y
Click here to see answer by stanbon(75887)

Question 916777: A student's grade in a course is the average of 4 test grades and a final exam that is worth three times as much as each test. Suppose a student has test grades of 91, 90, 83, and 93. Write an equation to model this situation where x is the student's grade on the final exam and y is the student's average for the course.
Then find the score they will need to receive on their final exam if they want to have a grade of 90 for course.
Final exam score needed =
Click here to see answer by JoelSchwartz(130)

Question 916927: Please help with this:
Solve for x: (x+4)^2-3=6
Can you please show me how you got the answer?
Thank You
Click here to see answer by jim_thompson5910(35256)

Question 916932: Solve the equation:
1000(2^(2/x)) = 3450
Thank you
Click here to see answer by Alan3354(69443)

Question 916961: I need your help. Can you do this for me ?Write the equation of the line that passes through (2 5) and perpendicular to the line 2y-3x=5. Write the answer in standard form
Click here to see answer by lwsshak3(11628)

Question 916967: determine the equation of the line AB if it is given that AB is perpendicular to the line 2y = 4x+8 and passes through (-2 -8)
Click here to see answer by JulietG(1812)

Question 916977: a pail and a jug contain q litres of water. The pail contains 3 times as much water as the jug. Find the volume of water in the jug in terms of q?
Click here to see answer by Theo(13342)

Question 916947: 24 increased by y
Click here to see answer by ewatrrr(24785)

Question 917046: Hi I would like to receive help solving for "Y" in terms of "X" for the problem below.
3X-5Y=25
Click here to see answer by ewatrrr(24785)

Question 917046: Hi I would like to receive help solving for "Y" in terms of "X" for the problem below.
3X-5Y=25
Click here to see answer by rothauserc(4718)

Question 917136: What is the equation of the line that has a slope of -1 and goes through point (0,5)
Click here to see answer by Alan3354(69443)

Question 917149: How do you find all solutions for this quadratic type equation:
x^4-5x^2-36=0
Click here to see answer by Alan3354(69443)

Question 917149: How do you find all solutions for this quadratic type equation:
x^4-5x^2-36=0
Click here to see answer by stanbon(75887)

Question 917168: How do you find all Real Solutions for this equation?
|3x+5| = 1-x
Click here to see answer by jim_thompson5910(35256)

Question 917167: How to solve the equation:
1000(2^(x/5)) = 3450
Thank you
Click here to see answer by jim_thompson5910(35256)

Question 917156: How do you find all Real solutions for this radical equation?
Square root of 9x+5 - 2square root of x+5 = 0
Click here to see answer by ewatrrr(24785)

Question 917212: x^5-6x^3+9x
Click here to see answer by jim_thompson5910(35256)

Question 917451: -18 + 4 + x = 9 - 19. What is x?
X=?
Click here to see answer by stanbon(75887)

Question 917467: I'm having trouble with this question: "Given the length of a rectangle is one less than four times the width. The perimeter of the rectangle is 88. Find the dimensions of the rectangle." So I put it into an equation of 4x-1=88. I worked out the equation, but then I was left with 89/4. It became a decimal of 22.25, but I have to find the dimensions of the rectangle which would be finding the length and width I suppose which is not the same size. Can someone please help me of solving this problem?
Click here to see answer by rothauserc(4718)

Question 917558: 2a-8=4
Click here to see answer by rfer(16322)

Question 792050: 2. GRADES In math classes at Gorbine
High School, all tests are given double
the weight of a quiz or homework score
when calculating grades. Use Donna�s
grade record sheet to determine her
average grade so far this term.
Click here to see answer by killerunicorns027(1)

Question 917749: We have several equations, but I still don't get the hang of it.
5+2(3-x)=?
Do I work with distibution here or do the addition first?
Thanks for your help!
Click here to see answer by josgarithmetic(39616)

Question 917900: I know that multiplying fractions you just have to times the numbers on the top and times the ones on the bottom but for instance on 10/9 x 27/4 would it still be the same way? and just simplify it?
Click here to see answer by KMST(5328)

Question 918157: Please. Solve the proportion x/7=15/30. Thanks for your help.
Click here to see answer by ewatrrr(24785)

Question 917753: x/7=-10

Click here to see answer by Fombitz(32388)

Question 917660: 1/3(x+5)Squared +4 = 36
Click here to see answer by Fombitz(32388)

Question 918261: parallel to y=1.8x+3 and through (5,2)

Click here to see answer by Fombitz(32388)

Question 918336: How would you solve the following inequality:
9>-r
Thank you in advance!!!!
Click here to see answer by Alan3354(69443)

Question 918390: How would I solve 25x^2-20x=0?
Click here to see answer by josgarithmetic(39616)

Question 918477: So i was doing good with some of my problems on my homework but I ran into this problem "4x/3+3=23." Honestly math isn't my best subject especially when it comes to solving equations like this.
So the question asked me to solve 4x/3+3=23.
Click here to see answer by josgarithmetic(39616)

Question 918476: center (-2,0),radius 5 type the center-radius form of the equation of the circle
Click here to see answer by josgarithmetic(39616)

Question 918544: (4,5), (2,3), (6,3),(4,1) type the equation in center radius form also type the equation in general form
Click here to see answer by Edwin McCravy(20054)

Question 918582: Please find the midpoint of the segment connecting the points (-3,17) and (12,-26). Thanks for your help.
Click here to see answer by ewatrrr(24785)

Question 918611: Kathie spent $45 on a fruit salad. She bought bananas, mangoes, and apples. Bananas cost $1 per pound, mangoes cost $3 per pound, and apples cost $2 per pound. Identify the linear equation in three variables that represents this situation.

Click here to see answer by ewatrrr(24785)

Question 918606: Classify the system and determine the number of solutions.
x − 4y + 7z = 14
3x + 8y − 2z = 13
7x − 8y + 26z = 5
Click here to see answer by ewatrrr(24785)

Question 918629: 3x^2-xy=0, 2y-5x=1
Click here to see answer by Fombitz(32388)

Question 918602: Identify the graph of the linear equation 2x + 2y − z = −4 in three dimensional space.
Options:
http://my.thinkwell.com/questionbank/94001-95000/94744/img/237283.jpg http://my.thinkwell.com/questionbank/94001-95000/94744/img/237283.jpg http://my.thinkwell.com/questionbank/94001-95000/94744/img/237285.jpg
http://my.thinkwell.com/questionbank/94001-95000/94744/img/237286.jpg

Click here to see answer by Fombitz(32388)

Question 918727: Need help solving for x: rx + h = 5x - k

Click here to see answer by stanbon(75887)

Question 918741: Find the center- radius form of the equation of the circle described and graph it. center (-2,0),radius 5. Type the center-radius form of the equation of the circle. Type an equation.
Click here to see answer by stanbon(75887)

Question 918766: Evaluate the function f(x)=-3x+9 at the indicated values.
a)f(2)=____ simplify your answer
b)f(-2)=_____ simplify your answer
Click here to see answer by MathLover1(20849)

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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