Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 455316: 10p-4(2p-5)+4
Click here to see answer by rfer(16322)

Question 455374: 3. The linear equation y=0.16x + 1.22 represents an estimate of the average cost of gas for year x starting in 2003. The year 2004 would be represented by x = 1, for example, as it is the first year in the study. Similarly, 2009 would be year 6, or x = 6.
1. What year would be represented by x=9?
2. What x-value represents the year 2020?
3. What is the slope (or rate of change) of this equation?
4. What is the y-intercept?
5. What does the y-intercept represent?
6. Assuming this growth trned continues, what will the price of gasoline be in the year 2020? How did you arrive at your answer?

Click here to see answer by oberobic(2304)

Question 455312: Sandy has $150in the bank. (starting point) Every month she deposits $100.
The completed number strip is:
Month 0 1 2 3 4 5 6 7
Dollars 150 250 350 450 550 650 750 850
How do you write the direct formula for this?
Click here to see answer by Alan3354(69443)

Question 455432: How do I simplify?
(a^2b^0c)^0

Click here to see answer by nerdybill(7384)

Question 455463: A number x is five more than two times x minus three.
Click here to see answer by MathLover1(20849)

Question 455651: can you help me solve using addition and multiplication principles
2/3 _ x/5 < 4/15
Click here to see answer by rfer(16322)

Question 455684: Write an equation of the line containing the given point and perpendicular to the given line. Express your answer in the form y=mx+b
(3,6); 8x+y=7

Can anyone help me understand this, I need help. Thank you so much
Click here to see answer by stanbon(75887)

Question 455649: (simple interest formula, where / is interest, P is principal, r is inteterest rate, and t is time I=Prt, for t
Click here to see answer by rfer(16322)

Question 455772: What is a in the equation xa � y + za = 0?
Click here to see answer by richwmiller(17219)

Question 455434: How do I simplify
3x^-2
Click here to see answer by ankor@dixie-net.com(22740)

Question 455873: How would I solve this equation? I have to solve for y:
20 + 3/4(12+y) = 3/2y - 10
Please help me out! :) Also, if you can show the steps? Thanks a bunch!!
Click here to see answer by stanbon(75887)

Question 455879: I am supposed to solve for x, but I'm not sure if my answer is correct... When I solved the equation I got x= 2/5. But when I plugged it in to check it, I got the wrong answer :( Help!!
9(15x/4-2) = 15x - 21/2
Thank you so much!!
Click here to see answer by Alan3354(69443)

Question 455895: Can you please help me solve the system of equations using the elimination method.
3x + 4y = 4
6x + 8y = 8
Click here to see answer by richwmiller(17219)

Question 455912: what is the cost of 6 composition books at 90 cents each? At c cents each?
is this accurate?
90(6)=c?
Thanks
Click here to see answer by richwmiller(17219)

Question 455915: ok, Im in algebra 1 and my biggest difficulties are word problems. I am willing to do the work, please tell me what should i do on a daily basis to speak fluent algebra 1 word problems? or at least translate statements into algebraic statements?
Click here to see answer by richwmiller(17219)

Question 455923: Use a radical to write f(x)
f (x) =^1/2 help please
Click here to see answer by richwmiller(17219)

Question 455926: If 4 pencils cost 72 cents, how does 1 pencil cost? How much do 5 pencils cost? n pencils?
4p=72
p=18
I know the 5th would cost .90 but would i write it and n out?
Click here to see answer by edjones(8007)

Question 455941: Find the other endpoint of a line segment with the given midpoint and one endpoint.
midpoint (11/2,17/2) and the endpoint is (2,9)
Click here to see answer by Edwin McCravy(20054)

Question 455941: Find the other endpoint of a line segment with the given midpoint and one endpoint.
midpoint (11/2,17/2) and the endpoint is (2,9)
Click here to see answer by lwsshak3(11628)

Question 456001: Please help me with this question, this is for an upcoming test I'm preparing for. I really need help! Thank you so much!
Question:
Find two whole numbers whose product is 147 and whose quotient is 3.
I tried to do the question by myself and got: "The two whole numbers are 7 and 21.
I'm not sure if the answer is correct but I tried my best. However, I still need to find out how to get to the answer and all the work and steps involved in getting the answer. Please show me a formula or the procedure tot get to the answer. Thank you so much, I really appreciate it! :D
Click here to see answer by stanbon(75887)

Question 455975: The sum of two numbers is twenty-four. Four less than three times the smaller is twelve less than twice the larger. Find the two numbers.
Click here to see answer by lwsshak3(11628)

Question 455874: 3x-1/3 - x-3/15 = 2x+3/2
I'm supposed to solve for x, but I just cant seem to figure it out! Help! :) Thank you!!
Click here to see answer by lwsshak3(11628)

Question 456013: is there a easy way to do consecutive intergers leading to a quadration

Click here to see answer by edjones(8007)

Question 455646: inhow would you clear fractions or decimals, solve, and check 7t + 8 - 1.62t = 0.4t - 0.32 + 8?
Click here to see answer by lwsshak3(11628)

Question 455266: Factorize the completely:
1. 3g-3t+2mg-2mt
2. 3xsquared + 2x-8
3. 3xsquared-27
Click here to see answer by lwsshak3(11628)

Question 456059: -9(6+u)-2u=-10
Click here to see answer by rfer(16322)

Question 456094: I am having trouble with solving for x in the following equation:

So far I have tried the following steps to simplify:
x+1=(x+2)(x-3)
x+1=
x+1=
x+7=
2x+7=
2+7=
9=
9x=
9=x
However, when I plug this solution for x into a calculator I end up with , which is not = to 9+2.
I hope you can explain this to me! I've been trying for hours over the past couple of days and I'm just not understanding it.
Thank you for taking the time to read this.
Click here to see answer by stanbon(75887)

Question 456096: How do I graph the equation x^2-x-6 = 0?
Thank you very much.
Christine
Click here to see answer by stanbon(75887)

Question 456098: Can sqrt(5) * sqrt(6) be simplified?
Appreciate your help.
Christine
Click here to see answer by nerdybill(7384)

Question 456209: 2x^3+4x^2-18x-36=0
Click here to see answer by nerdybill(7384)

Question 456287: (a^2+1)/(a^2-1) - 2/(a+1) = a/(a-1)

solve for a.... When I did this one, I got a=1 but im not sure if thats correct. Help! :)
Click here to see answer by katealdridge(100)

Question 456288: I have attempted this problem about 6 times now, and I always get stuck :( I'm supposed to solve for a but I cant figure it out! Can someone help me? Also, if you could include steps that would be wonderful :)
solve for a
a - (3a-6)/6 = (3a+2)/3
Click here to see answer by rfer(16322)

Question 456301: One last question. Can you show me graph the equation by plotting hte points:
x=2
Click here to see answer by richwmiller(17219)

Question 456307: x+4x+8
Click here to see answer by Alan3354(69443)

Question 456296: I am TOTALLY lost on this one :( PLEASE HELP!! All of the fractions really confuse me. I'm supposed to solve for x...

2/3 + 1/(2 2/5) - 1/x = 1/3 - 1/(2 2/3)

Click here to see answer by ptaylor(2198)

Question 456357: x^2-5x=0

What does x equal?
Click here to see answer by Alan3354(69443)

Question 456369: Can you tell me if I am correct? Determine whether the graphs of the two equation s are perpendicular.
y=4x-4
8y=7 - x
They are perpendicular
Click here to see answer by richwmiller(17219)

Question 456364: Can you solve the following system of equations using substitution?
2x+4y=12
4x+16y=8
Click here to see answer by richwmiller(17219)

Question 456410: How does the elimination method work for this equation?
5x + 6y=5
10x + 12y=10
The answer must be an ordered pair.
Click here to see answer by richwmiller(17219)

Question 456504: 4(2x-1)+6=8x-3
Click here to see answer by algebrahouse.com(1659)

Question 456550: 9+2x=5x-6 solve for x
Click here to see answer by stanbon(75887)

Question 456583: QUADRATIC
2x^2+3x=9
Click here to see answer by richwmiller(17219)

Question 456642: Solve for r
3=8-r/r
Click here to see answer by richwmiller(17219)

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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