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Question 488266: 6. Select the set of equations that represents the following situation: The sum of two numbers is 77, and their difference is nineteen less than the smaller number. What are the two numbers?
which one? A,B,C, or D?
(A) 2y = 77; 77 = x � 19
(B) 2x = 77; 77 = x + 19
(C) x + y = 77; x � y = 19 � x
(D) x + y = 77; y � x = x � 19

Click here to see answer by deborabr(181)

Question 488609: Find the x- and y-intercepts for the equation. Please show all of your work. Then graph the equation and submit your graph through the dropbox.
y = -5x + 10
Click here to see answer by josmiceli(19441)

Question 488380: can someone please help me?
solve each system by the elimination method.
1. 2x-y=2
4x+y=10
Click here to see answer by ankor@dixie-net.com(22740)

Question 488099: How do you graph the following?
y=-3/4x-1
x=-2 y=1.5
x=1 y=-1.75
x=2 y=-2.5
x=-3 y=1.25
The graph points don't see to line up.
Click here to see answer by bucky(2189)

Question 488868: What is passed through (-4,0) and (3,0) to be able to write in slope intercept form?
Click here to see answer by lwsshak3(11628)

Question 488846: whats the equation of the line that passes through point (-2, -3) and has a slope of 5.
Click here to see answer by lwsshak3(11628)

Question 488926: if one-third of a number is added to twice of a number, the answer is 10.
What is the number
Click here to see answer by stanbon(75887)

Question 488926: if one-third of a number is added to twice of a number, the answer is 10.
What is the number
Click here to see answer by MathLover1(20849)

Question 489030: I need to write an equation of the line containing the given point and perpendicular to the given line. (-10,8);7x-5y=2
These are the steps that I have done:
solve for y
7x-5y=2
-5y=-7+2
y=7/5x-2/5
the slope of the given line is 7/5
the slope of the new line is -5/7
next step
y-y1=-5/7(x-x1)
y-8=-5/7(x-x1)
y-8=-5/7(x-(-10))
then I needed to write it in this form= y=mx+b and solve for y
y-8=-5/7(x+10)
I was given the rest of the problem but do not understand how the numbers got to be what they were.
y-8=-5/7x-50/7 How did they get the 50?
y=5/7x+6/7 and the same here, How did they get 6/7?
I have tried to figure this out by still do not understand. Could you please explain how those numbers were reached?
Click here to see answer by chessace(471)

Question 489034: 9x + 3 = 9x + b
For what value(s) of b does the equation have no solution?

the answer i thought was 3 but than i seen that if i put 3 it would be infienetly solution than i thought it was two but that was incorrect also
Click here to see answer by Theo(13342)

Question 489175: I have three problems I can't figure out they are linear equations by addition, they are -3x-5y=-7 eqation 1
-4x+5y=14 equation 2
3x+y=30 equation 1
-3x+7y=6 equation 2
2x-y=2
2x+3y=22
these are homework quesstion and I am not good at linear equations
Thank you so much
Click here to see answer by chessace(471)

Question 489185: Find k so that the line kx-3y=4k is parallel to the line 2x-4y=1
Click here to see answer by dan_math(11)

Question 489244: find the equation of a line expressed in general form using a slope of -4/9 containing the points (-8,-10)
Click here to see answer by stanbon(75887)

Question 489591: Solve the system of equations
x + y = 5
x - y = -9
Click here to see answer by mananth(16946)

Question 489739: I need help with this problem:
Find y if the line through (3,1) and (7,y) has a slope of 2. Thanks for your response.
Click here to see answer by Gogonati(855)

Question 489833: For my assignment: Suppose that the length of a rectangle is three cm longer than twice the width and that the perimeter of the rectangle is 90.
1. set up an equation for the perimeter involving only W, the width of the rectangle.

Click here to see answer by htmentor(1343)

Question 489938: the directions are solve each equation
the problem is n+3 2/3 = 5 3/8
this is how far i have gotten
n+ 3 2/3 = 5 3/8
-3 2/3 -3 2/3
n= 5 3/8- 3 2/3
Click here to see answer by stanbon(75887)

Question 489941: write the equation of a line that passes through (7,2) and (0,-5)
Click here to see answer by stanbon(75887)

Question 489952: d+7+2(d+7)+3d+d+1=182 i was tryin to help my niece with her work but its been awhile since i took algebra so yea... the question goes like this. five friends have 182 dvds.. dan has the fewest. donna has 7 more than dan betty has twice as many as donna jerry has 3 times as many dan and kenesha has 6 less than donna..
Click here to see answer by stanbon(75887)

Question 490022: Find the zero of f(x) for f(x)=32+1.6x
Click here to see answer by stanbon(75887)

Question 490048: What is b if the lines with equations y=bx+5 and 2y=(b+4)x-1 are parallel?
Click here to see answer by josmiceli(19441)

Question 490050: write an equation of the line that is perpendicular the the line through (9,10) and (3,-2) and passes through the x-intercept of that line
Click here to see answer by mananth(16946)

Question 490244: Given the linear equation y = -x � 4, find the y-coordinates of the points (-1, ), (2, ), and (-3, ). Please show all of your work. Plot these points and graph the linear equation. Submit your graph through the dropbox.
Click here to see answer by MathLover1(20849)

Question 490248: Solve the problem. Please show all of your work.
A college has a stairway in the business wing that has steps that are 8 inches high and 9.2 inches across. What is the slope of the stairs?
Click here to see answer by stanbon(75887)

Question 490246: Find the y-intercept for 2x + y = 6

Click here to see answer by Sultan(2)

Question 490314: How do I apply elimination and substitution in solving a system of equations?
How do I demonstrate each technique in solving the system?
Lets use
3x+9y=12
5x-4y=3
I am a Digital film and video production major and math is my weakness. Thank you in advance for your help.
Click here to see answer by Alan3354(69443)

Question 490318: Applying elimination and substitution in solving a system of equations.
Demonstrate each technique in solving the system
1. 3x+9Y=12
2. 5x-4Y=3
Click here to see answer by Alan3354(69443)

Question 490459: Determine whether the given pairs of lines are parallel, coincident or intersecting?
L: x+y=10
M: 3x+3y=6
Click here to see answer by stanbon(75887)

Question 490462: (a) Find the equation of the vertical line containing the given point.
(b) Find the equation of the horizontal line containing the given point.
(c) Find the general equation of a line with slope 5 containing the point.
(-4,1)
Click here to see answer by stanbon(75887)

Question 490465: Find the general equation of each line; that is, write the equation in the form of Ax+By=C.
Slope= 2; containing the point (-4,1)

Click here to see answer by stanbon(75887)

Question 490468: Determine whether the given pairs of lines are parallel, coincident or intersecting?
L: 2x+y=4
M: 2x-y=8
Click here to see answer by mananth(16946)

Question 490568: 7x=36+x+6y solve for y, step by step response
Click here to see answer by Alan3354(69443)

Question 490721: points (-2, 3)and (4,y) slope m=-3 find the value of y
Click here to see answer by lwsshak3(11628)

Question 490740: WHAT IS THE SLOPE AND Y-INTERCEPT OF THE LINE WHOSE EQUATION IS 2X-Y=8?
Click here to see answer by nerdybill(7384)

Question 490981: 9. A dehydrated patient needs a 6.4% saline IV. Unfortunately, the hospital only has bags of 6% and 8% saline solutions. How many liters of each of these solutions should be mixed together to yield 1 liter of the desired concentration?

Hello, can someone, anyone please help me with this, thanks so much!!
Click here to see answer by stanbon(75887)

Question 490993: 2. Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this.
-2x + 0y = -14
x + 11y = 18

please show ne how to do this, not a math genius!
Click here to see answer by Alan3354(69443)

Question 490996: 2x^-x=1
Click here to see answer by Alan3354(69443)

Question 490996: 2x^-x=1
Click here to see answer by ccs2011(207)

Question 490991: 3. Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
10x + 5y = 52.5
30x � 7y = 80.5

I need help??please help!
Click here to see answer by Alan3354(69443)

Question 490988: 4. Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
-7x � 5y = 1.5
-5x � 4y = 4.5
Can someone help me solve this?
Click here to see answer by Alan3354(69443)

Question 491009: The line with the equation kx-3y+7=0 is parallel to the line with graident 5. What si the value of k?
Click here to see answer by ccs2011(207)

Question 491026: I need help with graphing y= -8x. If you could explain in detail, each step... that would be great. My name is Andrew, thank you for your help.
Click here to see answer by chessace(471)

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