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

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Question 145646: Please help me Form A logarithmic function and help me
Discuss the slope or rate of change
Click here to see answer by nabla(475)

Question 145803: how do I do 2-y^2=0
Click here to see answer by checkley77(12844)

Question 145815: Solve by the elimination method

0.05x+0.25y=11
0.15x+0.05y=12
Click here to see answer by jim_thompson5910(35256)

Question 145825: Solve the systems of equations by graphing. Then classify the system as consistent or inconsistent and the equations as dependent or independent
y=-x-9
5x-4y=-27
Click here to see answer by jim_thompson5910(35256)

Question 145828: Solve the systems of equations by graphing. Then classify the system as consistent or inconsistent and the equations as dependent or independent

3u+v=16
3u=v+26
Click here to see answer by jim_thompson5910(35256)

Question 145830: solve by the substitution method

3x-3y=3
8x+55=y
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Question 145832: Solve by the substitution mehtod

3x+5y=-11
-6x+y=44
Click here to see answer by jim_thompson5910(35256)

Question 145835: Solve by the elimination method

x+8y=54
-x+9y=48
Click here to see answer by jim_thompson5910(35256)

Question 145836: Solve by the elimination method

0.3x-0.2y=4
0.5x+0.3y=5
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Question 145837: Solve by the elimination method

4x-9y=14.5
7y-2x=-8.5
Click here to see answer by jim_thompson5910(35256)

Question 145838: Solve the system of equations by graphing. Then classify the system as consistent or inconsistent and the equations as dependent or independent.

x+y=7
x-y=-3
Click here to see answer by jim_thompson5910(35256)

Question 145840: Solve the system of equations by graphing. Then classify the system as consistent or inconsistent and the equations as dependent or independent,

x+y=6
x+y=-4
Click here to see answer by jim_thompson5910(35256)

Question 145841: Sole the system of equations by graphing. Then classify the system as consistent or inconsistent and the equations as dependent or independent

3x-y=26
3x+4y=-14
Click here to see answer by jim_thompson5910(35256)

Question 145945: Please help me Form A quadratic equation and help me Discuss the slope or rate of change

Click here to see answer by nabla(475)

Question 145942: Please help me Form A linear equation in two variables and help me Discuss the slope or rate of change

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Question 141879: I know that there is only one output for each input, but why?
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Question 145988: 4x+2y=1, 2x+3y=.70 solve for x and y
Click here to see answer by nerdybill(7384)

Question 146072: Solve by elimination
x+y=38
175000x+200000y=7200000
Click here to see answer by jim_thompson5910(35256)

Question 146106: please help me solve this equation:

Click here to see answer by vleith(2983)

Question 146101: please help me solve this equation:

Click here to see answer by checkley77(12844)

Question 146121: The probability that San Francisco plays in the next Super Bowl is nine times the probability that they do not play in the next super bowl. The probability that San Francisco plays in the next Super bowl plus the probability that they do not is 1. What is the probability that San Fran plays in the next Super Bowl?
Click here to see answer by josmiceli(19441)

Question 146120: Ziggy's Famous Yogurt blends regular yogurt that is 3% fat with it's no-fat yogurt to obtain low fat yogurt that is 1% fat. How many pounds of regular yogurt and how many pounds of no-fat yogurt should be mixed to obtain 60 pounds of low fat yogurt?
Click here to see answer by josmiceli(19441)

Question 146118: Solve system by substitution or addition
2y-X=3
x=3y-5
Click here to see answer by oscargut(2103)

Question 146119: At Gwens garage sale, all books were one price, and all magazines were another. Harriet bought 4 books and 3 magazines for $1.45 and June bought 2 books and 5 magazines for $1.25 What was the price of a book and what was the price of a magazine?
Click here to see answer by oscargut(2103)

Question 146114: Donna invested her $33,000 bonus and received a total of $970 in interest after 1 year. If part of her money returned 4% and the remainder 2.25% then how much did she invest at each rate?
Click here to see answer by ankor@dixie-net.com(22740)

Question 146116: Tickets for a concert were sold to adults for $3 and to students for $2. If the total receipt were $824 and twice as many adult tickets as student tickets were sold, then how many of each sold?
Click here to see answer by edjones(8007)

Question 146117: The function S=5000 +200x and D= 9500 -100x express the supply S and the demand D respectively, for a popular CD brand as a function of its price x in dollars.
Graph the functions on the same coordinate system.
What happens to the supply as price increases?
What happens to demand as price increases?
The price at which supply and demand are equal is called equilibrium price. What is the equalibrium price?
Click here to see answer by ankor@dixie-net.com(22740)

Question 146196: Solve by the substitution method
9x+5y=-8
-5x+y=12
Click here to see answer by jim_thompson5910(35256)

Question 146202: Hockey teams receive 2 points when they win and 1 point when they tie. One season, a team won a championship with 57 points. They won 9 more games than they tied. How many wins and how many ties did the team have?
Click here to see answer by jim_thompson5910(35256)

Question 146204: 4) The body mass index I can be used to determine an individuals risk for heart disease. An index less than 25 indicates a low risk. The body mass index is given by the formula, or model where w=weight, in pounds and h=height in inches. Jerome is 71 inches tall.

What weights will keep his body mass index between 22 and 33?

Click here to see answer by jim_thompson5910(35256)

Question 146205: Snookers Lumber can convert logs into either lumber or plywood. In a given day, the mill turns out twice as many units of plywood as lumber. It makes a profit of $30 on a unit of lumber and $45 on a unit of plywood. How many of each unit must be produced and sold in order to make a profit of $12120?

Click here to see answer by jim_thompson5910(35256)

Question 146221: 1.5x-2y=-0.25
3x+1.5y=6.375
Solve with addition method

Click here to see answer by nabla(475)

Question 146219: 1/8X + 1/4y=5
1/16x +1/2y=7
Solve system with addition method.
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Question 146216: 2x=3y+11
7x-4y=6 Solve system with addition method
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Question 146218: 3x-4y=9
-3x+4y=12 Solve system with addition method. IS this independant, dependant or inconsistant?
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Question 146215: Solve by addition
2x-y=-5
3x=2y=3
Click here to see answer by jim_thompson5910(35256)

Question 146212: Solve by substitution method
3x+y=2
-x-3y=6
Click here to see answer by jim_thompson5910(35256)

Question 146214: Solve by addition
x-y =12
2x+y=3
Click here to see answer by jim_thompson5910(35256)

Question 146213: Solve by addition
x+y=7
x-Y=9
Click here to see answer by jim_thompson5910(35256)

Question 146258: Find K if the given system of equations has infinite no of solutions.
2x+ky=1+2y and kx+12y=3
(1)-4 (2)6 (3)Either (1) or (2) (4) none of these.
i have chosen (3). But theanswer givenis (2). How it could be..?? plz explain this...??
Click here to see answer by stanbon(75887)

Question 146322: Solve the system by the elimination method
5x+3y=-7
7x-2y=19
Click here to see answer by jim_thompson5910(35256)

Question 146405: Solve by the elimination method
4x-8y=1
4x-8y=2
Click here to see answer by jim_thompson5910(35256)

Question 146408: Solve the system of equations by graphing. Then classify the system as consistent or inconsistent or inconsistent and the equations as dependent or independent.
2x-6y=42
3x-9x=-21
Click here to see answer by jim_thompson5910(35256)

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