Questions on Algebra: Equations answered by real tutors!

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Question 525982: two trains left a station at the same time one traveled north at twice th speed after 3 hours the trains were 400 miles apart how fast was each train traveling
Click here to see answer by mananth(12270)

Question 526011: Could somone help me with this? I can't figure it out.
The sum of two numbers is 376. The first number is 182 less than the second number. What are the two numbers?
Click here to see answer by scott8148(6628)

Question 526032: A city wants to double the area of a rectangular playground that is 72 feet by 48 feet by adding the same distance X to the length and the width. Write and solve an equation to find the value of X.
Click here to see answer by mananth(12270)

Question 526001: I need help with this problem.
Joe is 7 yrs. younger than Bill. The sum of their ages is less than 49. At most how old is Joe?
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Question 526098: (5,1) is a solution t the equation 2x-3y=7.what does this mean?

Click here to see answer by Maths68(1474)

Question 526159: two numbers differ by 5. if their sum is 19,then find the two numbers.
Click here to see answer by stanbon(57219)

Question 525996: -3x+5-2x+8=12
Click here to see answer by micahpuff(13)

Question 525656: How do you solve:
2- 1/2m=3/4
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Question 526192: x-5/4=7/4
Click here to see answer by Alan3354(30959)

Question 526303: Can some please help me with the following equation.
4/x-2 = 1 + 6/x+2
Click here to see answer by Alan3354(30959)

Question 526368: I am learning how to solve equations in two steps with positives and negative's. I have a test on tuesday so I need help please. How do I solve this type of exercise?:
1) 10p + 9 - 11 - p = -2(2p + 4) -3(2p - 2)
2) -3(1 + 6r) = 14 - r
3) -4k + 2(5k - 6) = -3k - 39

Click here to see answer by oberobic(2304)

Question 526292: x^2-6x+5=0
Click here to see answer by jim_thompson5910(28476)

Question 526433: Solve for D if 2D+3=13 and solve for E if 12E-3=0
Click here to see answer by Maths68(1474)

Question 526431: (x/(a-x))+(x/(x+a))=(a(x+3))/(x^2-a^2)
solve for x.
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Question 525882: how do you solve 4m/3-m/6=7/2
Click here to see answer by tracyc0912(40)

Question 526620: So I have the equation (1+I)^.0798-1 and I need to figure out the value of I...how do I reformat the equation to be able to figure out I??
Click here to see answer by jim_thompson5910(28476)

Question 525603: Can you factor this out into foil form? Thanks.
4x^2+9x-8 =
Click here to see answer by jim_thompson5910(28476)

Question 526693: what does x equal in this equation? 2(x+3)=18
Click here to see answer by graphmatics(170)

Question 526734: 1/6-x/2=x-5/3
Click here to see answer by jim_thompson5910(28476)

Question 526765: solve 180-x=3(90-x)-20
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Question 527016: 7 – 10z > 5

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Question 527018: -8r + 8 < -2(3r – 9)

Click here to see answer by jim_thompson5910(28476)

Question 527021: 8= 3y-5
solve equation
Click here to see answer by jim_thompson5910(28476)

Question 527037: solve the equation. If it is an identity(all real numbers) or a contradiction(no solution), so state.
6x+2+3x= 10x +2-x

Click here to see answer by jim_thompson5910(28476)

Question 527038: show the equation, show all work,final answer must be in simplest form
b+ 1/9= 9
Click here to see answer by jim_thompson5910(28476)

Question 527052: is x=1 a solution to 4x-3=7,yes or no

Click here to see answer by jim_thompson5910(28476)

Question 527077: Please help me solve for A: 2A/3 = 8 + 4A
Click here to see answer by rfer(12644)

Question 527054: .solve the problem,show all wrk.
the area of a triangle with base b and height h is given by the formula
a= 1/2 bh
find the area of a triangle with base 3 meters and height 10 meters

Click here to see answer by rfer(12644)

Question 527047: i need help with this question: the question is: .... The cost of renting a DVD at a certain store is described by the function f(x)=4x+3 in which f(x) is the cost and x is the time in days. If Lupe has $12 to spend, what is the maximum number of days that she can rent a single DVD if tax is not considered?
Click here to see answer by rfer(12644)

Question 527230: Solve the equation..
-4/21y = -8/15
Click here to see answer by stanbon(57219)

Question 527243: Find an equation of the line that satisfies the given conditions.
Through
(−1, −2) and (6, 5)

Click here to see answer by jim_thompson5910(28476)

Question 527340: 6x^2+6x+8=0
Click here to see answer by jim_thompson5910(28476)

Question 527359: 3(c - 2) = 2(c + 3)
Click here to see answer by jim_thompson5910(28476)

Question 527362: Mike bought some tee shirts at $7 each and some at $9 each. If he bought x of the $7 shirts and y of the $9 shirts and spent a total of 135, then give an equation in x and y which relates all the values.
Click here to see answer by mananth(12270)

Question 527328: The Monthly Tax that Marcy, a teacher pays is $770. Her monthly income is $3100, and the base tax is $150. what is Marcy's income tax rate?
Solve $770 = $3100R + $150
Click here to see answer by zoomkaboom4(62)

Question 527627: ((m-1)/5)=((2m-3)/3)-2
Click here to see answer by stanbon(57219)

Question 527657: explain why b2 = (-b)2 for any number b.
Click here to see answer by richard1234(5390)

Question 527846: can you give me an example of how to solve this question. i am a parent of a 12 year old and didn't take algebra when i was in school. any help would be greatly appreciated!!
3x + 6 = 6
Click here to see answer by rfer(12644)

Question 527939: my math teacher gave us this problem and I don't understand it here is the problem simplify 1.5 (3) +7.2 divided by 12
Click here to see answer by oberobic(2304)

Question 528005: 2(3y-1)+3(y-4)=13
Click here to see answer by jim_thompson5910(28476)

Question 528208: 5x = 40

Click here to see answer by Maths68(1474)

Question 528546: square root of 9 over 8

Click here to see answer by Alan3354(30959)

Question 528544: what is 2d+24+3d=84
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