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Question 371097: A 50-Foot extension cord is cut into 2 pieces so that one piece is 12 feet longer than the other piece, How long is each Piece? So how do I write this as as an equation?
Click here to see answer by rfer(16322)

Question 371089: The sum of three numbers is 44. The second number is is three times the first number and the third number is 6 less than the first number. Find the three numbers. How do I write this in equations.
Click here to see answer by mananth(16946)

Question 371100: A 12 foot board is cut into two pieces so that one piece is 4 feet longer than the other How long is each piece? Write an equation to solve.
Click here to see answer by rfer(16322)

Question 371179: xneg3 y2 zneg4 what is the exponent?
Click here to see answer by nyc_function(2741)

Question 371171: Please solve and show the steps.
2.1x + 43.2 equal to or greater than 1.2 - 8.4x
Thank You
Darlene
Click here to see answer by jvan(28)

Question 371296: 0.12(2x-5)+3x=81
Click here to see answer by stanbon(75887)

Question 371372: solve graphically x=4 and 3x-2y=10. write down coordinates of point of intersection.
Click here to see answer by ewatrrr(24785)

Question 371480:
I need the answer and need to know how you got the answer for a solving systems using elimination. 7x + 2y = 10 -7x + y = -16

Click here to see answer by Edwin McCravy(20056)

Question 371580: Write 0.54 as a decimal rounded to three decimal places
Click here to see answer by Alan3354(69443)

Question 371654: (5,1) is a solution to the equation 2x-3y= 7. what does that mean
Click here to see answer by edjones(8007)

Question 371678: Please help me understand how to find the y-intercept of a linear equation: Thank You
Click here to see answer by Fombitz(32388)

Question 371658: Find the slope of (2,-1) and (6,3)
Click here to see answer by Fombitz(32388)

Question 371691: explain when to use a solid line as a boundary when graphing a linear equation
Click here to see answer by Fombitz(32388)

Question 371668: How would you graph 2x-y+3z=6?
Click here to see answer by Alan3354(69443)

Question 371669: How would you graph x+y+z= -7?
Click here to see answer by Alan3354(69443)

Question 371670: How would you graph x+y-2z= 10?
Click here to see answer by Alan3354(69443)

Question 371700: when we graph the inequality 4x-3y greater than or equal to 0 why can't we use (0,0) as a test point? if we test the point (6,-5), do we obtain a false statement or a true one?
Click here to see answer by stanbon(75887)

Question 371713: y=2x +5
4x+y=5
Click here to see answer by user_dude2008(1862)

Question 371715: (4x^2)+(9y^2)=16
2x+3y=4
Click here to see answer by Fombitz(32388)

Question 372096: what is the answer to this equation (6x + 7) to the power of two
Click here to see answer by ewatrrr(24785)

Question 372150: how do i graph x=2 and 3x-y=8
Click here to see answer by Alan3354(69443)

Question 372072: 5x-3y-4x+2y
Click here to see answer by checkley79(3341)

Question 372417: The problem says solve by substitution
to find the solution of
5x+5y=-20
and -9x+y=76
there may not be a solution as well but that is where I get confused.
Click here to see answer by marcsam823(57)

Question 372413: y=-3x+2
y=2x-3
Click here to see answer by user_dude2008(1862)

Question 372474: solve system of equations using multiplication with the addition method;
7x-3y=-5
3x+2y=11
Click here to see answer by mananth(16946)

Question 372542: Solve the system of equations and enter the solution as an ordered pair.
3y = 4x + 7
5y = 4x + 25

Click here to see answer by Fombitz(32388)

Question 372657: What is the solution for this equation?
2x^2=3x-2?
I first moved the 2x over then set it to = 0, but i'm not sure if that is the correct way to solve. I factored then and got 2x(x-2)-1(x-2)=0, which i then put as (2x-2)(x-2). I got the answers x=2, x=1/2. I'm confused because I am not sure if this was the way to solve, or if I should have used the quadratic formula?
Click here to see answer by Fombitz(32388)

Question 372608: Using Substition method find all solutions of the system of equations.
x^2+y^2=25 , y=2x

Click here to see answer by Fombitz(32388)

Question 372684: If an object is projected vertically upward from an altitude of s(o) feet with an intial velocity of v(o) ft/sec, then its distance above the ground after t seconds is: s(t)=-16t^2+ v(o)t+ s(o).
If s(1)= 64 and s(2)=66, what are s(o) and v(o)?
I honestly do not know how to set the problem up! Please help, it would be greatly appreciated!Thanks :)

Click here to see answer by nerdybill(7384)

Question 372663: What is the solution for this equation? I know i had to use the u, u^2 formula for this.
x^1/2+3x^1/4-10 = 0
First I let u = x^1/4 and u^2 = (x^1/2)^2= 1/2. After that I had the equation
u^2+3u-10=0. I factored it to (u+5)(u-2)=0, and had u=-5,u=2.
(x^1/4)^4= -5^4, (x^1/4)^4= 2^4. My solutions were x=625, x=16. Is this correct?
Click here to see answer by Alan3354(69443)

Question 372695: Please help: use the elimination method to find all solutions of the system of equation.
Problem 1: 2x^2+4y=13 , x^2-y^2=7/2
Problem 2: x^2-y^2=1 , 2x^2-y^2=x+3
Click here to see answer by Fombitz(32388)

Question 372700: A man flies an airplane from Fargo to Bismark -- a distance of 180 mi. Because he is flying into a head wind, the trip takes 2 hours. On the way back, the wind is blowing the same speed, so it takes an 1 hour and 48 mins. What is his speed in still air and how fast is the wind blowing?
Click here to see answer by Alan3354(69443)

Question 372647: How would I solve this equation?
x - 1 = 2
___ ___ _____
x+1 x-1 x^2-1

I used the LCD of x+1, x-1 and i know the answer cannot be x=1 or x=-1. I came up with the answer of x= -1 but since it cannot be that, i put the empty set symbol of 0. Please help me, if this is incorrect? thank you.
Click here to see answer by Jk22(389)

Question 372610: Use the substitution method to find all solutions of the systems of equations.
x^2+y=9, x-y+3=o

Click here to see answer by Fombitz(32388)

Question 372788: How can I solve x^3 power -1 over (/) x^2 power +1 divided by 9x^2+9x+9 over (/) x^2-x
Click here to see answer by solver91311(24713)

Question 372828: What are extraneous solutions of an equation? Why do they sometimes occur in the process of solving rational or radical equations? Provide examples to support your answer.
Click here to see answer by robertb(5830)

Question 372880: For this question you will have to use substitution.
Please help me solve this problem :

Click here to see answer by robertb(5830)

Question 372987: 13.7b-6.5=-2.3b+8.3
Click here to see answer by robertb(5830)

Question 373011: Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this.
-x + 6y = 54
3x + y = 9
Can someone please help me? I am completely lost and am working toward a huge deadline!
Click here to see answer by jim_thompson5910(35256)

Question 373274: (-3,___) is a solution of y = 4-3x
Click here to see answer by rfer(16322)

Question 373607: Raheel is comparing the cost of two parking garages. Garage A charges a flat fee of $6 per car plus $0.50 per hour. Garage B charges a flat fee of $2 per car plus $1 per hour. After how many hours will the cost at Garage A be the same as the cost at Garage B? What will that cost be?
Click here to see answer by ewatrrr(24785)

Question 373756: using elimination method how do i solve this
0.05x+0.05y=44
0.15x+0.05y=48
Click here to see answer by amoresroy(361)

Question 373763: All of the exercises left out two different parts filled in with given information. They are all very similar using a & b, x & y, and g & s as the unknowns.
Problem:
Anita is having a bake sale at her church in order to raise money for a retreat. She needs to make $200 throughout the weekend in order to afford the trip. She decides to make brownies which cost her $1.50 to make 20 and cookies which cost her $2.00 to make 24. How many brownies and cookies must she sell (minus her contribution for having the make them) in order to reach her goal?

Click here to see answer by solver91311(24713)

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