Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 158980: Solve this equation

I=Prt + P;P

What is the answer, including the steps?
Click here to see answer by midwood_trail(310)

Question 159014: (W+2)/(2W-2)=5 can you help solve for W in the steps so I can learn?
Click here to see answer by midwood_trail(310)

Question 159018: 7x-(2x-12)= -8
Click here to see answer by oscargut(891)

Question 159020: In November the number of snow-tire changes was 6 less than 4 times the numver of tune-uos. if 12 tune-ups were done, how many snow-tire changes were made?
Click here to see answer by oscargut(891)

Question 159028: carol ordered 120 air filters for the garage. The number of air filters was 8 less than 2 times the number of gas filters ordered. How many gas filters were ordered?
Click here to see answer by gonzo(654)

Question 159054: Write the equation of the line that passes through the point (2,-4) and is perpendicular to the line whose equation is y= -1/2x + 3
Please HELP!!
Click here to see answer by scott8148(6628)

Question 159059: The center of a circular sunflower with a diameter of 4 centimeters is (-2,1). Write the equation that represents the sunflower.
Please help & Thanks!
Click here to see answer by scott8148(6628)

Question 159052: What values of x would make the following equation undefined?
1/x + 1/x+3 =2
Any help is appreciated!
Click here to see answer by KnightOwlTutor(293)

Question 159044: 4x+9=17
Click here to see answer by rovi808(1)

Question 159044: 4x+9=17
Click here to see answer by KnightOwlTutor(293)

Question 159025: Carol's Garage had a special last month. For each pair of tires you bought, you got a free oil change. During the special, 48 tires were sold. How many free oil changes were done?
Click here to see answer by KnightOwlTutor(293)

Question 159057: Simplify completely:
x^2 y -4/4-x^2 y
Click here to see answer by KnightOwlTutor(293)

Question 159021: Carol ordered 119 oil filters for the garage. The number of oil filters was 5 more than 3 times the number of tires ordered. How many tires were ordered?
Click here to see answer by KnightOwlTutor(293)

Question 159055: Solve the following system of equations algebraically:
y = x^2-6x+6
y-x= -4
Click here to see answer by Fombitz(13828)

Question 159084: solve for x: 3(x-2)-3=x+5
Click here to see answer by jojo14344(1512)

Question 159092: tn= 2x+(n-1)5x
can you please formulate this for me. step by step on how to solve this problem?
Click here to see answer by vleith(2825)

Question 159009: Can you help me with this?

A= h (B+b);B
_
2
Click here to see answer by midwood_trail(310)

Question 159002: Can you help me solve this equation?

A= h )B+b);B
_
2

Your help will be appreciated. Thank you!
Click here to see answer by Fombitz(13828)

Question 159124: is 18=-3(-6)true or false or open sentence
Click here to see answer by checkley77(12569)

Question 159182: Please help me solve this equation:
5(r+1) = 2(r-4)-6
Click here to see answer by nerdybill(6959)

Question 159191: The difference of tow integers is 8. Six times the smaller number is 4 more than 2 times the larger. What are the numbers?
Click here to see answer by stanbon(57356)

Question 159236: 1/3*2/6=
Click here to see answer by Alan3354(30993)

Question 159256: How do you solve: n^2 - 10n = -21 ?
Click here to see answer by Alan3354(30993)

Question 159260: I have a substitution problem that I would like help with, please (I have a test tomorrow).
x + y + z = 3
3x + 3y + 3z = 10
x - 3y + 4z = 6
I know that I could start by solving for x in the third equation:
x = 3y - 4z +6
I can also solve for y in the first equation: y = 3 - x - z
I could then substitute y in the second and third equation:
x + 3 - x - z + z = 3 but this makes all variables 0
x - 3(3 - x - z) + 4z = 6 x - 9 + 3x + 3z + 4z = 3 4x + 7z = 12
Now I'm stuck. Thank you!
Click here to see answer by Alan3354(30993)

Question 159337: 6t=3(t+4)-6
Click here to see answer by jim_thompson5910(28595)

Question 159343: 18=6x+4(2x+3)
Click here to see answer by jim_thompson5910(28595)

Question 159340: 18=6x+4(2x+3)
Click here to see answer by jim_thompson5910(28595)

Question 159367: I am a homeschooler and am having trouble with a problem. My teachers manual has the solutions but not the steps used to arrive at the solutions. Normally I am able to show my son the steps, but this equation has me stumped. A detailed explanation would be greatly appreciated, as I can't figure out where I am making my mistake (or mistakes).
The equation: x = y / y+4 solve for y
The solution: y = 4x / 1-x

Click here to see answer by jojo14344(1512)

Question 159365: Hi! I have a question. I am done with all my homework but i am stuck on one question. Do you know what exponential form of 10 is??
Click here to see answer by Earlsdon(6287)

Question 159414: x-3/2=34

Click here to see answer by checkley77(12569)

Question 159410: Hi my name is Tran, having a hard time with my home work.Please help, thank you
ad=f;a
n+3=q;n
2a=4b=d;b

Click here to see answer by Fombitz(13828)

Question 159443: Hi I need some help please
My problem is this
2(c+3) = c -13
Thanks for your help
Click here to see answer by jojo14344(1512)

Question 159472: The worker on machine A can complete a certain job in 6 hours. The worker on machine B can do the same job in 4 hours. In a rush situation, how long would it take both machinists to complete the job?
Click here to see answer by josmiceli(9680)

Question 159478: To generate hydrogen in a chemical lab, a 40% solution of Sulphuric acid is needed. You have 50ml of an 86% solution of sulphuric acid. How many ml of water should be added to dilute the solution to the required 40% sulphuric acid?
Click here to see answer by josmiceli(9680)

Question 159481: How many kilograms of nicker silver containing 18% zinc and how many kilograms of nickel silver containing 31% zinc must be melted together to produce 700kg of a new nickle silver containing 22% zinc???
Click here to see answer by josmiceli(9680)

Question 159483: The worker on machine A can complete a certain job in 6 hours. The worker on machine B can do the same job in 4 hours. In a rush situation, how long would it take both machines to complete the job???
Click here to see answer by Alan3354(30993)

Question 159525: -6+x/4=-5 This is a fraction equation with negative. I am trying to help and have forgetten how to do these. Thank you so much for your help. Robin

Click here to see answer by jim_thompson5910(28595)

Question 159468: A discount store sells personal computers for $920.00. This price is 80% of the price at the wholesale store. What is the wholesale price? How much will you save at the discount store?
Click here to see answer by mizjoice(22)

Question 159477: Sally invested $4500.00. Part of it was invested at 7.5% and part of it was 6%. After one year her interest was $303.00. How much was invested at each rate?
Click here to see answer by checkley77(12569)

Question 159461: Hi can I get help with this please
3(2v-1) = 6v-4
Click here to see answer by checkley77(12569)

Question 159460: Hi can I get help with this problem please
5p-8 = 1 + 5p - 9
Click here to see answer by checkley77(12569)

Question 159454: 20 stamps were sold for $6.62. Some stamps were 24 cents and some were 37 cents. How many of each stamp were sold?
Click here to see answer by checkley77(12569)

Question 159558: Ten 6.0-V and 12-V batteries have a total voltage of 84 V.How many of each type are there ???
Click here to see answer by KnightOwlTutor(293)

Question 159558: Ten 6.0-V and 12-V batteries have a total voltage of 84 V.How many of each type are there ???
Click here to see answer by gonzo(654)

Question 159545: b - 8 = 0
addition property of equality
Click here to see answer by jim_thompson5910(28595)

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