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Question 346673:
Algebra- solving sytems of equations in three varaiables:
( Answer is needed within 1.5 hours, by 11"30 AM Pacific time - Thanks!)
3x+5y+4z =13
5z+2y+3z=-9
6x+3y+4z=-8
Click here to see answer by CharlesG2(834)

Question 346446: eiffel tower is 497 ft. taller than the washington monument. if each of the monuments were 58 ft. shorter, the eifel tower would be twice as tall as the washingtom monument. how tall is each
Click here to see answer by scott8148(6628)

Question 346969: Trying to help my son with his homework?!
Here are the directions on the top of the paper.>Combine like terms after you simplify the expression using Distributive property. Ca. Std. 4.0 Simplify expressions before solving linear equations.

3(2x-5y)+2(5x+3y)
Could you explain??
Click here to see answer by haileytucki(390)

Question 346976: i'm trying to work on the process for this equation. i'm looking for the steps I can't remember how to work it through help
x=(4+y)/(3-y)
Click here to see answer by haileytucki(390)

Question 346901: I need help solving the following using the substitution method and the elimination method. I am so stuck trying to figure these out.
4x+3y=48
3x+2y=34
Click here to see answer by ankor@dixie-net.com(22740)

Question 347013: how do u cancel variable, in a 3 variable equation,that is -6z on top and 0z on bottom
Click here to see answer by edjones(8007)

Question 347091: A hawk can fly 300 miles in 8 hours with the wind. Flying against the wind, the hawk covers only one-third of the distance in 7 hours. What is the rate of the wind?
Click here to see answer by mananth(16946)

Question 347124: 6x-y=38
5y=6x-70
Click here to see answer by Fombitz(32388)

Question 347183: find slope of a line passing through (4,-1) and (3,-4). use formula m=y2 -y1/ x2 -x1

write equation of a line m=2/3 and b=-1. use formula y=mx+b
write an equation a line that passes trough the point (1,-3) and has slope 2.
use formula y-y1=m(x-x1)
Click here to see answer by solver91311(24713)

Question 347089: Simon Rose surveyed feature films released from 1983 through 1993, listing the most common names of movie characters. The list is shown here, but the number of characters with the names Jack and John is omitted. Combined, there were 230 movie characters with these names. Taking triple the number of Jack characters and subtracting double the number of John characters gives 16 less than triple the number of George characters. How many movie characters had the names Jack and John from 1983 through 1993?

Name Characters
Jack ?
John ?
Frank 87
Harry 72
David 63
George 62
Michael 59
Tom 59
Mary 54
Paul 53

Click here to see answer by solver91311(24713)

Question 347242: Jeff is a cashier at the grocery store. He has a total of $580 in bills. He has 76 bills, consisting of $5 bills and $10 bills. How many of each type does he have?
Click here to see answer by ewatrrr(24785)

Question 347549: 5x-3y=-13
7x-8y=-41 solve by elimintion
Click here to see answer by haileytucki(390)

Question 347632: i need help with my equations in reference to if my answers are correct
(1) 7x+3=5x+17
(2) -11-3c=4+2c
(3) 3-2a=12-9
(4) 2(3x+7)=16
(5) 3x=5(9-x)
(6) 8-5(2-x)=-17
Click here to see answer by stanbon(75887)

Question 347764: solve the system of equations:
6x-y=3
5x+3y=-9
Click here to see answer by jim_thompson5910(35256)

Question 347972: -w+3x-y-4z=6
Click here to see answer by jim_thompson5910(35256)

Question 348062: sam took his family to the zoo. an adult's ticket is two times the cost of a child's ticket. the total cost for two adult's tickets and three children's tickets was $28. how much do the tickets cost?
Click here to see answer by mananth(16946)

Question 348087: i have an equation 2y=5x+z where x=10 then determine y
please give me solution
Click here to see answer by Jk22(389)

Question 348120: Have there been any problems solved such as .. Solving a linear equation with several occurrences of the variable Problem type 4?
-2(4x -8)+4x = 6(x + 3)

I stuggle with the changing of the signs and this causes me to get the wrong answer every time. Can someone please explain when to change the sign in these kind of problems. If any of the Tutors can help it would be grately appreciated
I have 5 weeks of Algebra and I don't want to fail the class again. I'm in week one now
Thanking you in advance.

Click here to see answer by mananth(16946)

Question 348294: 4x+5y=10 3x-8y=-77.1 solve using addition method or substitution method. I get examples that show them multiplying by 40 and -30 on other problems, but I am not told why they picked those numbers so I am at a loss as where to start.
Click here to see answer by stanbon(75887)

Question 348302: 4x-7y=7 for x

Click here to see answer by stanbon(75887)

Question 348333: Patterns within systems of linear equations. Examine the constants in the first equation and describe any patterns. Repeat for the second equation.
x+2y=3
2x-y=-4
How do I determine patterns across the equation and down for the x values?
Click here to see answer by stanbon(75887)

Question 348378: True or false. 4x + y = 3 and y = -4 + 3 are equivalent.
Click here to see answer by checkley77(12844)

Question 348421: solve by the addition method:
2x=2-y
3x + y = -1
Click here to see answer by Fombitz(32388)

Question 348482: Help! This is one of my homework questions and I did it, but apparently it isn't right?!
Given the system of inequalities below, determine the shape of the feasible region and find the vertices of the feasible region. Give the shape as "triangle", "quadrilateral", "pentagon", or "unbounded". Report your vertices starting with the one which has the smallest -value. If more than one vertex has the same, smallest -value, start with the one that has the smallest -value. Proceed clockwise from the first vertex. Leave any unnecessary answer spaces blank. Also give the value of the objective function P=-7x-4y for each vertex.
The inequalities are:
x+y>=18
2y-x<=20
5x-y<=53
x>=0
y>=0
and i must give the shape of the area and the coordinates of each vertex
Click here to see answer by Fombitz(32388)

Question 348765: S=2pirh, for h
Click here to see answer by stanbon(75887)

Question 348919: Solve the system of equations.
x+6y=9
x=3-6y
Click here to see answer by Alan3354(69443)

Question 349007: Write the equation of the line passing through the points (-3,-2)and (-1,-1)
Click here to see answer by solver91311(24713)

Question 349011: write the equation of the line passing through the points (-99,4)and (127,4)
Click here to see answer by solver91311(24713)

Question 349008: write the equation of the line passing through the points (0,7) and(3,4)
Click here to see answer by solver91311(24713)

Question 349014: write the equation of the line passing through the point (-3,1) which is perpendicular to line 7y-5x-7=0
Click here to see answer by mananth(16946)

Question 349014: write the equation of the line passing through the point (-3,1) which is perpendicular to line 7y-5x-7=0
Click here to see answer by solver91311(24713)

Question 349098: How do I graph 2y-5x<13
Click here to see answer by mananth(16946)

Question 349098: How do I graph 2y-5x<13
Click here to see answer by stanbon(75887)

Question 349098: How do I graph 2y-5x<13
Click here to see answer by Theo(13342)

Question 349085: Multiply.
-4/3*(6/5)
Click here to see answer by Fombitz(32388)

Question 349181: The concession stand sells hot dogs and drinks during their high school foot ball game. John bought 6 hot dogs and 4 drinks and paid $6.70. Jessica bought 4 hot dogs and 3 drinks and paid $4.65. What is the price of a hot dog?
Click here to see answer by josmiceli(19441)

Question 349538: Part 1:
Suppose you need to solve a system of equations in which one equation represents a circle and the other represents a line. How many solutions can your system have? Select ALL that are possible.
0,1,2,3,4, infinitely many
Part 2:
How many solutions does the following system of equations have?
x2+y2=64
x=1
0,1,2,3,4, infinitely many
Click here to see answer by Theo(13342)

Question 349604: 6n=24 how do i work this problem

Click here to see answer by Fombitz(32388)

Question 349631: Solve by the substitution method
5x+3y=2
x=22-3y
Click here to see answer by Jk22(389)

Question 349640: Well I'm on chapter three of the Algebra 1 book. Stuck on Formula's?
I.e.

Solving for H...
A=bh
A=1/2h(b1+b2)
Help please. \=
Click here to see answer by Fombitz(32388)

Question 349457: A passenger trains speed is 60me/h and a freight train's speed is 40mi/h. The passenger train traels the same distance in 1.5 h less time than the freight train. How long does each train take to make the trip?
Click here to see answer by ankor@dixie-net.com(22740)

Question 349744: x-2y=6
3x-6y=18 how many solutions does this equation have
Click here to see answer by checkley77(12844)

Question 349856: What is the slope of (3,2.75)and (-2,-1)
Click here to see answer by solver91311(24713)

Question 349921: the slope of -3 and contains the point (o,3)
Click here to see answer by mananth(16946)

Question 349962: Fred, Tiger and Nancy all play a round of golg togehter. their combined score was is 223. Freds score was 3 more than Nancy, and tigers score was 7 more than freds. what was each persons score?
Click here to see answer by rfer(16322)

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