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Question 160725: A migrating elephant herd started moving at a rate of 6 miles per hour. One stood still and was left behind. He got nervous and began running at 10 miles per hour. He caught up to the herd in 5 minutes. How far did he run? How long in hours did he run?
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Question 161077: Solve the equations by graphing. Then classify the system.
x+y=9
x-y=5
What is the solution to the system? ________
Is the system consistent or inconsistent? ___
Are the equations dependent or independent? ______
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Question 161096: Solve by the substitution method.
7x=4y= -16
-9x+y = 39
What is the solution of the system?
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Question 161201: Solve by the elimination method.
0.05x+0.25y=44
0.15x+0.05y=48
What is the solution of the system?
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Question 161320: Please help: The sum of two numbers is 17. If the larger is two more than twice the smaller, the larger number.
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Question 161319: One number is equal to 4 times another number. Their diffrence is 12. Find the numbers.
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Question 161198: Solve by the elimination method.
9x-9y=27
7y-3x= -11
What is the solution of the system?
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Question 161196: Solve by the elimination method.
5x+2y= -11
7x-3y=19
What is the solution of the system?
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Question 161680: this is an elimination problem i can not get it.
3x+2y=3
9x-8y=-2
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Question 161754: Solve the system of equations using the addition (elimination) method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is �no solution� or �infinitely many solutions.�
5x � 4y = 1
-10x + 8y = -3

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Question 161751: can anyone help
Find the equation, in standard form, with all integer coefficients, of the line perpendicular to x � 2y = 24 and passing through (1, 3).
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Question 161845: adult tickets for the school musical sold for $3.50 and student tickets sikd fir $2.50. Three hundred twenty one tickets were sold altogether for $937.50 How many of each kind of ticket were sold?
Notice that in problems like this you have to consider two things:
prices
quantity of tickets sold
You cannot combine them in only one equation because they represent different things; so you will need two equations.
Now before we construct the two equations; lets set up our variables
Let a represent adult tickets
Let s represent student tickets
Now lets look at what we now about these two when thinking about them in money terms:
$3.50 per adult
$2.50 per student
Total made $937.50
Lets show it algebraically: 3.50a + 2.50s=$937.50
When thinking about the tickets in numbers we now the number sold were 321 so algebraically a + s = 321
Two equations; two variables; we can solve...........
a + s = 321 ....... which is the same as.... s= 321 - a
3.50a + 2.50s = 937.50
Since s = 321-a, we can substitute this into second equation:
3.50a + 2.50(321-a)=937.50
3.50a+802.5-2.50a=937.50
3.50a-2.50a+802.5=937.50
1.00a+802.5=937.50
a=135
Then s=321-135
s=186
Check:
a+s=135+186=321 check
3.50a+2.50s=3.50(135)+2.50(186)=472.50+465=937.50 check

Click here to see answer by eperette(173)

Question 161753: solve the system of equations using the addition (elimination) method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is �no solution� or �infinitely many solutions.�
x + 2y = 5
3x + 4y = 1

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Question 161882: Erica earns a salary of $200.00 a week plus 15% commission on all sales. Juanita, new to the company has a straight commission salary of 25%.

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Question 161892: Rewrite the equation 4x - 10y = 11 as a function of x.
This is what I have but I think it's wrong.
4x-10y=11
-10y=-4x+11
To get y by itself I do : y=-4/-10x+11/10 (thats -4 over -10 and 11 over -10)
Simplified it would be y=-2/5x+11-10 (thats -2 over 5 and 11 over 10)
What am I doing wrong??

Click here to see answer by Earlsdon(6294)

Question 161890: 3r - 5s = -33
5r + 3s = 47
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Question 161930: the difference between two complementary angles is 50 degrees. what is the measure of the larger angle?
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Question 161952: please help: y<-5x+6 Graph the linear inequality
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Question 161963: help please: -12x+8y<56 Graph each linear inequality. (please show steps)
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Question 162114: The Computer Store has reduced the price of a computer by 15%. What is the original price of the computer if the sale price is $1275?
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Question 162108: 2k+ar=r-3y for y
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Question 162182: how can i sketch the graph of each line?
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Question 162333: -5x-4=3x
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Question 162330: -5x-4=3-
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Question 162404: I would love it if you would tell me I'm doing this right, however, if I am not please help me to see what I am doing wrong.
Solve the linear equation by graphing
2x-y=5 3x+y=5
y=-2x+5 y=3x-5
my answer: 2,1
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Question 162508:
2. Is it possible for the graph of an inequality to consist of only one number? If so, explain how it is possible and provide an example to support your answer. I know the answer is yes but having trouble explaining how it works on a graph.
Click here to see answer by vleith(2983)

Question 162552: 2v + 18 = 16 - 4(v + 7)
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Question 162558: a basketball team sells tickets that cost $10 $20 or VIP seats, $30. The team has sold 492 tickets over all. It has sold 177 more $20 tickets than $10 tickets. The total sales are $8580. How Many tickets of each kind have been sold?
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Question 162607: Your teacher is giving you a test worth 100 points containing 40 questions on the test. There are 2point and 4 point questions. How many of each are there?
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Question 162651: Solve by graphing
2x+y=2
-x+y=5
Can you show me, step by step, how this works?
Click here to see answer by SAT Math Tutor(36)

Question 162853: if a company plans to lay off 10% of its employees in its aerospace division and 15% of its employees in its agricultural divsion. If altogether 12% of the 3000 employees in these two division will be laid off, then how many employees are in each divsion.
Heres what I've tried: .10 (x) + .15(x) +.12 = 3000
300 450
.12x = 3000
____ ____
.12 .12
Click here to see answer by jim_thompson5910(35256)

Question 162870: please help me solve this equation(4r-2)-(3r=1)
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Question 162877: if the second digit of a 2 digit no 3 times of first digit and there position is changed and added to original no the answer is 88 wht are digits?
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Question 162958: a local library bought 54 books. some cost $32 each and some cost $44 each. the total cost of the books was $1968. How many of the 32 dollar books were purchased?
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Question 162964: If the graphs of two linear equations in a system have different slopes, the system ________ has exactly one solution.
Complete with never, sometimes or always.

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Question 162924: y=-2x+6
y=3x+6
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Question 162975: ) Demonstrate by determining the intercepts of "14x + 7y = 21". Non graphing
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Question 162925: (2x-5)+(x+25)+x
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Question 155720: 2x+3(x-5)=15
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Question 163114: The second digit of a two digit no is 3 time of first digit. If the position of the digit is interchanged and added to original no the new no is 88. find the digits using only one variables.
Click here to see answer by Fombitz(32388)

Question 163229: Eighteen-carat gold contains 18 parts by mass of gold to 6 parts of other metals. Fourteen-carat gold contains 14 parts gold to 10 parts of other metals. How amny kilograms of eighteen-carat gold should be mixed with fourteen-carat gold to obtain 60 kg of an alloy containing 17 parts gold and 7 parts of other metals?
Click here to see answer by ankor@dixie-net.com(22740)

Question 163264: 3(x + 6)=5(x-4)
Click here to see answer by joecbaseball(37)

Question 163185: What are the x-intercept and y-intercept of a linear equation? What are their coordinates on a graph? How can they be used to graph a line?

Click here to see answer by checkley77(12844)

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