Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 262448: Can you help me find the equation for the line?
(2,-5) and (0,4)
Could you explain it too?
Thank you
Click here to see answer by scott8148(6628)

Question 262533: if i sold brownies for 3.00 and cookies for 2.50 i sold 3 less cookies and the total is 218.00. ive been working on this for an hour along with my parents. we just want the equation.
Click here to see answer by richwmiller(9144)

Question 262592: Hi,
I am trying to help my nieces with their homework, but I don't have much information to go by and it has been awhile since I played with equations.
Anyhow, maybe one of you know more what about what they are looking for or at least give me a clue.
I think they are trying to find the equation that by replacing the value IN, the result should match the OUT.
e.g. X + Y = Z (Where X=IN, & Z=OUT) makes sense? sorry if it doesn't.
I know is hard to pick from very little information.
:)
IN OUT
2 -1
3 +1
10 +15
15 +25
5 +7
Thanks a lot

Click here to see answer by richwmiller(9144)

Question 262619: the perimeter of a rectangle is 86m. The length is 7m more than the width. Find the dimensions.
Click here to see answer by mananth(12270)

Question 262653: x^2+6x+5=0
Click here to see answer by jim_thompson5910(28699)

Question 262822: After solving a system of equations in two variables you surmise a solution, (x,y). How can you determine if the solution is correct?
Click here to see answer by drk(1908)

Question 262823: Specifically, how would the system of equation be presented before soving it?
Click here to see answer by Alan3354(31505)

Question 262883: solve for variable 2y/3=8
Click here to see answer by palanisamy(496)

Question 262959: can anyone help me solve this problem? 19(x/8) Please help my assignment is late.
Thank you in advance
Deborah
Click here to see answer by mananth(12270)

Question 263016: Could you please help me solve for X and state the restrictions on the variables: bx+a=dx+c ? Every time I tried I always ended up with my x's being canceled because I couldn't figure out what I was doing wrong when I divided by both b and d.
Click here to see answer by richwmiller(9144)

Question 263104: Need help :/.
( x/x+2)^2 = 4x/x+2 -4
Thanks :)
Click here to see answer by drk(1908)

Question 263102: I cant seem to solve this equation.. PLease help :)
x+2/x
------- = 5x
3+4/x
Thank u :)
Click here to see answer by drk(1908)

Question 263102: I cant seem to solve this equation.. PLease help :)
x+2/x
------- = 5x
3+4/x
Thank u :)
Click here to see answer by josmiceli(9817)

Question 263219: I am not sure how to answer this...I have never been good at it would you please help me with this problem
A=p(l+rt) solve for t
thank you
pam
Click here to see answer by stanbon(57953)

Question 263257: Please solve 6-4x=6x-8x-4
Click here to see answer by jim_thompson5910(28699)

Question 263280: Given the equations 3x + y = 17, 5y + z = 14 and 3x + 5z = 41, what is the value of the sum x + y + z?
Click here to see answer by mananth(12270)

Question 263280: Given the equations 3x + y = 17, 5y + z = 14 and 3x + 5z = 41, what is the value of the sum x + y + z?
Click here to see answer by richwmiller(9144)

Question 263316: solve for u, where u is a real number square cube root u+22=2
Click here to see answer by Alan3354(31505)

Question 263322: Write the equation of the line that passes through the given point and is perpendicular to the given line. Write the answer in slope-intercept form.
(-6,8), y + 2 x = -13
y= ?
Click here to see answer by Alan3354(31505)

Question 263331: 1. 6 + 5x = 2x- 2/3
Click here to see answer by mananth(12270)

Question 263416: solve the following equations for the variables.
6x-2=22

Click here to see answer by richwmiller(9144)

Question 263453: divide: (1 1/2 + 3/4) divide (3 1/4 - 1)
this is what I got but each time i try..i get different answers:
(3/2 + 3/4) divide (13/12 - 1/1) LCD= 12
(18 + 9) x (13-12)
27x1
answer= 27
is this correct?
Click here to see answer by drk(1908)

Question 263499: Hello, i'm trying to solve my problem. I'm using solving sytems using elimination. The problem is, 4x=-2y=1 and below that is 2x=y=4
Click here to see answer by oberobic(2304)

Question 263587: p-1=5p+3p-8
Click here to see answer by monkeyboi(1)

Question 263290: Joe bought a pumpkin that cost 10 cents more per pound than his sister’s. Together, the two pumpkins weighed 20 pounds, but Joe’s pumpkin was heavier. Joe paid $3.52, and his sister paid $0.48. How many pounds did Joe’s pumpkin weigh?
Click here to see answer by richwmiller(9144)

Question 263595: 3x+4+1/2(4x-1)=-3/2
Click here to see answer by rfer(12726)

Question 263727: I need to figure out how to solve for x in this problem:
(x+1)/(x+1) + (5)/(x+2) = (3)/(x+1)

Click here to see answer by JBarnum(2044)

Question 263727: I need to figure out how to solve for x in this problem:
(x+1)/(x+1) + (5)/(x+2) = (3)/(x+1)

Click here to see answer by unlockmath(1614)

Question 263723: n^2+5 for n=3 and m=7
m
Click here to see answer by JBarnum(2044)

Question 263812: 2x+3y+4=0 what is y

Click here to see answer by mananth(12270)

Question 263888: Solve the following problem. Keep in mind the suggestions we offered in this section.
How long will it take $3,100 to double itself if it is invested at 8% simple interest?
Click here to see answer by richwmiller(9144)

Question 263933: The height of a projectile fired vertically into the air at an initial velocity of 160 feet per second is a function of time, x, and is given by the equation
f(x) = 160x – 16x2
I need help finding the highest point reached by the projectile. I just have no idea how to work this equation in order to do this.
Your help would be greatly appreciated!

Click here to see answer by jim_thompson5910(28699)

Question 263929: 2x^2-32=0

Click here to see answer by CharlesG2(828)

Question 263956: {a|a is greater than 6 and less than 2}
or
the set of all values of a such that a is greater than 6 and less than 2
Click here to see answer by stanbon(57953)

Question 264164: Six hundred people attended the premiere of a motion picture. Adult tickets cost $7, and children were admitted for $2. If box office receipts totaled $3950, how many children attended the premiere?
Click here to see answer by checkley77(12569)

Question 264272: 4n+5=6n+7
Click here to see answer by checkley77(12569)

Question 264294: 28% of my salary goes to federal income taxes. If I pay $50,400 in taxes, what is my salary?
Click here to see answer by unlockmath(1614)

Question 264324: I need to solve for y to graph. The equation is x-2y=10. How do I do that?
Click here to see answer by JBarnum(2044)

Question 264392: Lets say you have four weeks to come up with $800 dollars for your mortgage payment. You want to come up with the same amount for each week. Create a mathematical equation to calculate the amount you will need each week to reach your goal.
I need the equation for this problem, please. I think it is 4x = $800, but I am not sure. I also need to know how to arrive at the answer. Thank you.
Click here to see answer by richwmiller(9144)

Question 264517: please help
solve the following problem.round answer to two decimal places when necessary.
C=100
(Pi)=3.14
D=C÷(Pi)
D=
Click here to see answer by stanbon(57953)

Question 264528: A mortar shell is s feet above the ground after t seconds, where s = f(t) = -16t2 + 512t + 64. Find the height of the shell 24 seconds after it is fired. (Simplify the answer as much as possible.)
s= ? ft.
Click here to see answer by Alan3354(31505)

Question 264593: What is the only value z-24=2z+50? Enter your answer as a decimal.

This is exactly what my book says. I need help! Please help! It was the very first question for my homework.
Click here to see answer by jim_thompson5910(28699)

Question 264552: what are the steps for this equation? p-1=5p+3p-8?
Click here to see answer by jim_thompson5910(28699)

Question 264589: SUE WANTS TO BUY A PRINTER THAT COST $189. SHE HAS $125 SAVED .SHE HAS A JOB THAT PAYS $8 AN HOUR. HOW MANY HOURS MUST SHE WOK TO EARN ENOUGH TO BUY THE PRINTER
Click here to see answer by checkley77(12569)

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7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 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