Questions on Algebra: Equations answered by real tutors!

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Question 519839: find all solutions of the equation 2x^2 - 8x + 16 = 0 and express them in the form a + bi
Click here to see answer by jim_thompson5910(28715)

Question 519870: 6-(x-2)=-6x+5(x+10)
Click here to see answer by jim_thompson5910(28715)

Question 519881: Solve the inequality. express the answer using interval notation.
3 * |(1/2)x + 1| + 2 is less then or equal to 47
Click here to see answer by stanbon(57967)

Question 519894: Use the discriminant to determine the number of real solutions of the equation. do not solve the equation. 9x^2 - 4x + (4/9) = 0
Click here to see answer by mananth(12270)

Question 520063: A car leaves a house in Atlanta at 8:00a.m. Traveling at an average speed of 45mph.
A van leaves the same house at 10:00a.m. Traveling at an average speed of 60mph.
In how many hours will the van catch up with the car?
Click here to see answer by mananth(12270)

Question 520189: 3n+5=23

Click here to see answer by Tatiana_Stebko(1326)

Question 520190: how do I solve
2x^3+3x^2-65x+84+0
Click here to see answer by stanbon(57967)

Question 520193: 6(w-4)+18=30
Click here to see answer by Tatiana_Stebko(1326)

Question 520216: x divided by 4 - 3 = x + 8
Click here to see answer by solver91311(17077)

Question 520301: will you please help me solve combining like terms?
6x+5x
Click here to see answer by solver91311(17077)

Question 520415: explain how you would do 2x+8=5x-3
Click here to see answer by solver91311(17077)

Question 520477: 2/3(6x+3)=3x+1
Click here to see answer by rfer(12730)

Question 520599: how would you solve for P ? A=P+Prt
Click here to see answer by tinbar(128)

Question 520599: how would you solve for P ? A=P+Prt
Click here to see answer by stanbon(57967)

Question 520602: 63 divided by r = 9
please show the work.

then there
17 = 153 divided by q
I am stomped.

Click here to see answer by edjones(7569)

Question 520602: 63 divided by r = 9
please show the work.

then there
17 = 153 divided by q
I am stomped.

Click here to see answer by stanbon(57967)

Question 520679: 6x^2-19x+10=0
Click here to see answer by Math_prodigy(21)

Question 520657: Solve the system of equations
X-Y=1
-4x+3y=5 By substitution
Click here to see answer by mananth(12270)

Question 520775: I cannot solve this problem. I know what the answer is because I used a process if elimination but don´t understand how to write the equation.
The sum of a number is 18. Three times the greater number exceeds four times the smaller number by 5. Find the numbers. The answers are 7 and 11.
Is there
Is there anyway to solve this problem without 2 variables as we haven´t been using two variables, only one.
Click here to see answer by Earlsdon(6294)

Question 520804: I am a little bit lost with this Algebra Equations, so here it is:
-7-2(x+4)=6x-(x-9)Please show me step by step. Thanks in Advance
Click here to see answer by Earlsdon(6294)

Question 520857: Peter is reading a 193-page book. He has read three pages more than one fourth of the number of pages he hasn't yet read.
a. How many pages has he not yet read?
b. Estimate how many days it will take Peter to finish the book if he reads about 8 pages per day.
Click here to see answer by solver91311(17077)

Question 520858: Half the number y is equal to y minus ten.
Click here to see answer by Maths68(1474)

Question 521039: how do i make pre algebra and all of the algebra problems easy for me to solve i just want to do better in school
Click here to see answer by geometryworm7271(30)

Question 521039: how do i make pre algebra and all of the algebra problems easy for me to solve i just want to do better in school
Click here to see answer by solver91311(17077)

Question 521039: how do i make pre algebra and all of the algebra problems easy for me to solve i just want to do better in school
Click here to see answer by josmiceli(9817)

Question 521043: -x-(13+4x)=-3(5-9x)+2
Click here to see answer by jim_thompson5910(28715)

Question 520989: in this problem 15x-8-3x=16 how do you figure out what x reprsents
Click here to see answer by jim_thompson5910(28715)

Question 520818: Solve for a using the addition and multiplication principles: 14-6a= -2a+3

Click here to see answer by jim_thompson5910(28715)

Question 521169: is the ordered pair (7,8) a solution to the equation x-y=5?
Click here to see answer by jim_thompson5910(28715)

Question 521277: F=9/5C + 32 Solve for C
(5)F=(5)9/5C + 32(5)=
5F=9C + 160
Stuck here...:(
Click here to see answer by oberobic(2304)

Question 521292: Please help me solve this equation:
2/ (x+5) + 1/ (x-5) = 16/ (x^2 -25)
I know the answer equals 7, but I am unable to retrieve that answer.
Here is my work:
LCD= (x+5)(x-5)
I multiplied the LCD with the equation and cancelled out the bottom fractions.
2x - 10 + x +5 = 0
3x - 5 = 0
3x = 5
x = 5/3
Thanks for your help!
Click here to see answer by mananth(12270)

Question 521397: How wide a border of uniform width should be added to a rectangle that is 8 inches by 12 inches in order to double the area?

Click here to see answer by mananth(12270)

Question 521563: 5x-1/2=1/8
I have the answer, but I do not know the steps to get the answer. Can you help me?
Thank you
Click here to see answer by umnikmo(75)

Question 521683: 3(m-2)=-2a(m-7)
Click here to see answer by unlockmath(1614)

Question 521778: factor trinomial using trial and error
6x^2+39x+60
or is it not factorable?

Click here to see answer by jim_thompson5910(28715)

Question 521765: 3x+7=-3
Click here to see answer by jim_thompson5910(28715)

Question 521796: what is the ansewr step by step for 3-f=6f+8
Click here to see answer by jim_thompson5910(28715)

Question 521879: Loretta's age in 17 years will be three times what is was 13 years ago. How old is Loretta?
Click here to see answer by umnikmo(75)

Question 521975: please help me solve this problem by substitution
(x-4y+z=6 & 2x+5y-z=7 & 2x-y-z=1)
What would x, y & z equal?
Click here to see answer by stanbon(57967)

Question 522089: f(x)=x^3-64
Click here to see answer by stanbon(57967)

Question 522096: 3(2x + 6) - 5(x + 8) = x - 22

I really really would like to know how to solve this I have multiple questions on as assesment in a class I just started taking and i just do not remember how to solve this so any sort of help would be really appreciated. Oh , and i'm not getting graded seriously for it I just reall would like to know, we're only getting graded for doing it, but we will be taing a test on it in the future so i'm curious now. Thank you kindly!
Click here to see answer by Gogonati(817)

Question 522297: i dont understand how this answer would come out as (-69)...... The problem is this , -33+(-7)=29+m . if you could please hellp me ASAP that would be great... thank you !
Click here to see answer by Alan3354(31518)

Question 522466: -7(x+2)+2= -12
Click here to see answer by jim_thompson5910(28715)

Question 522483: 6x-2=x+13
Click here to see answer by jim_thompson5910(28715)

Question 522490: The combined ages of a father and his twin daughters are 54 years.The father was 24 years when the twins were born.How old is each of the three people?
Is it the father was 24 years,and each twin was 15 years because
54-24=30
30/2=15
or is it 54-24=30,30/2=15,24+15=39 years old for the father and 15 years old for the twins each?
Click here to see answer by scott8148(6628)

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