Questions on Algebra: Systems of Linear Equations answered by real tutors!

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Question 905633: I would be humbled if someone would help me out with my Algebra 1 work. I am new to this site.
Elana is scaling up a 500-foot cliff. She starts at the bottom at t=0 hours and carefully climbs at a constant rate of 120 feet per hour.After how many minutes will Elena reach the top of the cliff? Show how you arrived at your answer.(pt.1)
Also express you answer in (pt.1)terms of hours and minutes.
Thank you so much:)

Click here to see answer by jim_thompson5910(35256) About Me 
Question 905633: I would be humbled if someone would help me out with my Algebra 1 work. I am new to this site.
Elana is scaling up a 500-foot cliff. She starts at the bottom at t=0 hours and carefully climbs at a constant rate of 120 feet per hour.After how many minutes will Elena reach the top of the cliff? Show how you arrived at your answer.(pt.1)
Also express you answer in (pt.1)terms of hours and minutes.
Thank you so much:)

Click here to see answer by Alan3354(69443) About Me 

Question 905706: How do I identify the solution for x+3y=6 and 4x-3y=4?
Click here to see answer by josgarithmetic(39617) About Me 

Question 905732: How do I identify the solution for -3x-4y=2 and 8y=-6x-4?
Click here to see answer by Math_Boss(45) About Me 

Question 905730: How do I identify the solution of 4x+2y=0 and y=5-3x? I was able to get as far as -10, but from there I am completely lost.
Click here to see answer by Math_Boss(45) About Me 

Question 905745: How do I identify the solution for x=1 and y=1? Would that be infinitely many solutions?
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Question 905742: How do I identify the solution 3x+2y=4 and 5x-4y=3?
Click here to see answer by josgarithmetic(39617) About Me 

Question 905737: How do I identify the solution of 5x+2y=4 and 4x-2y=4?
Click here to see answer by rothauserc(4718) About Me 

Question 905808: 10y=16x-60
Click here to see answer by Alan3354(69443) About Me 

Question 905468: Use the cubic function to estimate GDP in year 2015.
I got ax^3+bx^2+cx+d
a=.1145
b=-7.550
c=184.74822
d=603.23764
how do i put this in the cubic function format?

Click here to see answer by Fombitz(32388) About Me 

Question 906094: I'm having a hard time with this question and I just help to know how to solve it.
What is 3 times the y-coordinate of the solution to the following system? { -x+y=8
y=4x

Click here to see answer by jim_thompson5910(35256) About Me 

Question 906662: I've been stuck on this question and I'm pretty sure it's the most simplest things ever but I don't know why I can't figure it out. So far I got to a+b=1200 but I know I need another part of the system. the question is:
An office is printing 1200 copies of a document using two printers. Printer a gets jammed and prints only half as many copies as printer B. Write and solve a system of equations to for number of copies that eah printer will produce.

Click here to see answer by richwmiller(17219) About Me 

Question 906699: Could you all verify my work for me and make sure I did it right. I was suppose to simplify the following x/6=18/4 I did the following
simplified to 18/4 to 9/2
X/6=9/2
I multiplied both sides by 6
my answer was X=27. Is that right I just am learning this and i am still realy shaky. I appreciate all of your help folks, thank you.
Kadrian US Army retired.

Click here to see answer by stanbon(75887) About Me 
Question 906699: Could you all verify my work for me and make sure I did it right. I was suppose to simplify the following x/6=18/4 I did the following
simplified to 18/4 to 9/2
X/6=9/2
I multiplied both sides by 6
my answer was X=27. Is that right I just am learning this and i am still realy shaky. I appreciate all of your help folks, thank you.
Kadrian US Army retired.

Click here to see answer by josgarithmetic(39617) About Me 
Question 906699: Could you all verify my work for me and make sure I did it right. I was suppose to simplify the following x/6=18/4 I did the following
simplified to 18/4 to 9/2
X/6=9/2
I multiplied both sides by 6
my answer was X=27. Is that right I just am learning this and i am still realy shaky. I appreciate all of your help folks, thank you.
Kadrian US Army retired.

Click here to see answer by MathTherapy(10552) About Me 

Question 906715: Solve each system of equation
3x+2y=12
x+y=3
This problem is really confusing me I tried changing them in y=mx+b but the answer still isn't right and then I tried multiplying the bottom equation by -3 and I get another wrong answer. Please help.

Click here to see answer by richwmiller(17219) About Me 

Question 906982: Solve the system by substitution.
4y + 19 = x
3y - x = -13
Solve the system by elimination.
3x + 2y = 17
4x - 2y = 4

Click here to see answer by MathLover1(20850) About Me 

Question 907161: what is the answer for: 29x+79=20x+150

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Question 907493: Identify the solution(s) of the system of equations, if any.
x + 3y = 4
2x - 6y = 0

Click here to see answer by ewatrrr(24785) About Me 

Question 907572: help to solve 1/7(49x+7y)
im new to algebra
thanks

Click here to see answer by rfer(16322) About Me 

Question 907663: Solve this system of equations:
6x+2y+4z=2
3x+4y-8z=-3
-3x-6y+12z=5

Click here to see answer by mananth(16946) About Me 

Question 907712: x+y+z-w=5
2x+y-z+w=6
x-5y+3z+w=9
-x-y+z+4w=7
These always confuse me.

Click here to see answer by richwmiller(17219) About Me 

Question 907649: Solve the system using substitution. You can eliminate the decimals if you like, but you don't have to. The solution will be the same in either case.
{0.35x+0.50yy==5.2014−x

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Question 907624: what is y/10 + 3 = -15
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Question 908120: 8t+5=8t+20
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Question 908391: Determine whether it is linear:
7x-9+5y=x-3?
-3x=7?
0.09x-0.2y=3.3?

Click here to see answer by josgarithmetic(39617) About Me 

Question 908613: Slope equals 2 and the line goes through the point (-1, 3)
The line goes through the points (8,5) and (9, 6)
The line goes through the points (-1, -7) and (-8, -2)
The line goes through the points (1/2, 3/2) and (-1/4, 5/4)
Please help me solve these I have tried multiple times and can't get the correct answer.

Click here to see answer by ewatrrr(24785) About Me 

Question 908596:
Click here to see answer by ewatrrr(24785) About Me 

Question 908711: writing a equations. How to do that.
twice a increased by the cube of a equals b. can you show me step by step

Click here to see answer by josgarithmetic(39617) About Me 

Question 908995: logarithmic equation is equivalent to the equation 34(45)-78t=8910?
Click here to see answer by Edwin McCravy(20056) About Me 

Question 909199: The sides of an equilateral triangle are given as y+5 , 2x-7 and x+y-9 respectively. Find the lengths of the sides.
Click here to see answer by swincher4391(1107) About Me 

Question 909391: The length of a rectangle is x+y+2 and 2x+1. The width of a rectangle is 2y and x+2. Find the perimeter, in cm, of the rectangle.
Click here to see answer by Alan3354(69443) About Me 

Question 909742: how do I solve this equation for y
11x+19y = 17

Click here to see answer by jim_thompson5910(35256) About Me 

Question 909836: 1/2t - 1/5v = 5/2
2/3t + 1/4v = 7/12

Click here to see answer by Fombitz(32388) About Me 

Question 909870: A video store charges a monthly membership fee of $7.50,but the charge to rent each movie is only $1.00 per movie. Another store has no membership fee, but is costs $2.50 to rent a each movie. How many movies need to be rented each month for the total fees to be the same from either company?
Click here to see answer by ewatrrr(24785) About Me 

Question 909970: 14>20-37
Click here to see answer by MathLover1(20850) About Me 

Question 910114: Please help,
Given the following system of equations
x + y = 4k
2x = k
where k is a constant Real Number, solve the system for (x; y) in terms of k. Do not replace the constant k with a numerical value. Give your solution as an ordered pair.

Click here to see answer by JoelSchwartz(130) About Me 

Question 910257: Please help, I have no Idea.
Every Year the price of pots, regardless of size, increase by $2 per Year. If the Cost of buying 4 large pots and 6 small pots was $112 three year ago and it will cost $124 to buy 2 large pots and 5 small pots the next year, use simultaneous to determine the present day cost of each type of pot.

Click here to see answer by josgarithmetic(39617) About Me 

Question 910285: $2500 is to be deposited in Banks A and B. The interest rate per annum for Bank A is 6% while that for Bank B is 6,5%. After one year, their interests are equal. How much money is to be deposited in each bank?
Click here to see answer by richwmiller(17219) About Me 

Question 910283: The ratio of two sums of money is 4:3. If the larger sum of money is increased by $40, the ratio becomes 2:1. Find the sums of money.
Click here to see answer by ewatrrr(24785) About Me 

Question 910284: A motorist covered a journey of 690km in 8 hours. He covered part of the journey at 90km/h and the rest at 80km/h. What was the distance that he covered at 80km/h?
Click here to see answer by richwmiller(17219) About Me 

Question 910288: Adding unity to the numerator as well as the denominator of a fraction makes it equal to 4/5. Subtracting 5 from each makes it equal to 1/2. What is the fraction?
Click here to see answer by stanbon(75887) About Me 

Question 910287: $80 is divided between two men such that one-quarter of one person's share is equal to 1/6 of the other. How much will each man receive?
Click here to see answer by ewatrrr(24785) About Me 
Question 910287: $80 is divided between two men such that one-quarter of one person's share is equal to 1/6 of the other. How much will each man receive?
Click here to see answer by stanbon(75887) About Me 
Question 910287: $80 is divided between two men such that one-quarter of one person's share is equal to 1/6 of the other. How much will each man receive?
Click here to see answer by MathLover1(20850) About Me 

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