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5x-4y=8 , for y
I Tried to solve and came up with y=-2-5x which doesn't seem right.
I need step-by-step solution by 11/6/11 for homework assignment.
Thank you. 1 solutions
Answer 348639 by jim_thompson5910(28707) on 2011-11-05 19:48:31 (Show Source):
You can put this solution on YOUR website!
 Start with the given equation.
 Subtract  from both sides.
 Rearrange the terms.
 Divide both sides by  to isolate y.
 Break up the fraction.
 Reduce.
So the equation  is now in slope intercept form  where the slope is  and the y-intercept is  note: the y-intercept is the point
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Inequalities/526677: I'm trying to solve, using addition and multiplication principles.
Problem: 3/4(3x-1/2)-2/3<1/3
Calculator gave answer: x<11/18
I don't know the steps to arrive at this answer, and must show my work for homework assignment due 11/6/11. Can you assist me with the process? 1 solutions
Answer 348633 by jim_thompson5910(28707) on 2011-11-05 19:40:25 (Show Source):
You can put this solution on YOUR website!
 Start with the given inequality.
 Distribute.
 Multiply EVERY term by the LCD  to clear out the fractions.
 Multiply and simplify.
 Combine like terms on the left side.
 Add  to both sides.
 Combine like terms on the right side.
 Divide both sides by  to isolate  .
 Reduce.
----------------------------------------------------------------------
Answer:
So the solution is
If you need more help, email me at jim_thompson5910@hotmail.com
Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you
Jim
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Geometry_proofs/526665: Can someone explain in steps how you would do this proof ?
This is ridiciulous everyone in my class understands it , and I don't get it.
http://www.flickr.com/photos/68627030@N06/6316210261/in/photostream 1 solutions
Answer 348616 by jim_thompson5910(28707) on 2011-11-05 19:14:33 (Show Source):
You can put this solution on YOUR website!Here are the following reasons (that are missing from the given ones)
b. Interiors on Same Side Theorem **
c. Definition of Supplementary Angles
e. Definition of Congruent Angles
g. Definition of Supplementary Angles
h. Converse of Interiors on Same Side Theorem **
** Note: The Interiors on Same Side Theorem states that "If two parallel lines are cut by a transversal, the interior angles on the same side of the transversal are supplementary."
The basic idea here is to use the fact that PV is parallel to QM to show that angles 1 and 2 are supplementary (ie they add to 180 degrees). From there, you use substitution to show that angles 2 and 3 are also supplementary. Then you reverse the logical steps used beforehand to show that because angles 2 and 3 are supplementary, this means that LT must be parallel to MV.
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Permutations/526626: what is the actual space of all the non black face cards in a regular deck of cards? 1 solutions
Answer 348582 by jim_thompson5910(28707) on 2011-11-05 16:54:33 (Show Source):
You can put this solution on YOUR website!A non-black face card is a red face card (since there are only two colors: red and black)
There are 3 face cards in each suit (J, Q, K)
There are 2 red suits (Hearts, Diamonds)
So there are 3*2 = 6 red face cards
Which means that there are 6 non-black face cards.
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Graphs/526623: Find an equation of the line having the given slope and containing the given point.
m=8/9,(5,-5).. I can solve this problem up to the last step where i need help! Here is how I am solving it.
Substitute values for m,x1,, and y1 into the point slope equation.
y-(-5)=(8/9)(x-5)
=y-(-5)=8/9x - 40/9..
(here is where i get stuck)
*finaly subtract 5 from both sides*
y=8/9x-85/9
how do I get 85/9 as an answe when i subtract 5 from both sides i get 35/9 1 solutions
Answer 348581 by jim_thompson5910(28707) on 2011-11-05 16:44:18 (Show Source):
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Angles/526621: The Supplement of an angle is 20 less than 3 times the complement. Find the measure of the angle. PLEASE HELP 1 solutions
Answer 348580 by jim_thompson5910(28707) on 2011-11-05 16:41:24 (Show Source):
You can put this solution on YOUR website!
"The Supplement of an angle is 20 less than 3 times the complement." means that  where 'x' is the given angle.
 Start with the given equation.
 Distribute.
 Combine like terms on the right side.
 Subtract  from both sides.
 Add  to both sides.
 Combine like terms on the left side.
 Combine like terms on the right side.
 Divide both sides by  to isolate  .
 Reduce.
----------------------------------------------------------------------
Answer:
So the solution is
This means that the given angle is 35 degrees.
If you need more help, email me at jim_thompson5910@hotmail.com
Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you
Jim
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Miscellaneous_Word_Problems/526618: a taxi begins a fare with inital charge of $2 on the meter and charges 20 cents per one-tenth a mile. how much will a 10-mile journey cost? 1 solutions
Answer 348577 by jim_thompson5910(28707) on 2011-11-05 16:24:16 (Show Source):
You can put this solution on YOUR website!
If it's 20 cents per one-tenth of a mile, then it's 200 cents per mile (multiply both quantities by 10)
So it's really $2 per mile.
So if you drive x miles, then the variable cost is 2x dollars.
Add this to the fixed cost to get 2x+2
So the total fare for driving x miles is 2x+2 dollars.
This means that the cost equation is
c = 2x+2
Now if you drive 10 miles, then x = 10 and
c = 2x+2
c = 2(10)+2
c = 20+2
c = 22
which means that a 10 mile journey will cost 22 dollars.
If you need more help, email me at jim_thompson5910@hotmail.com
Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you
Jim
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Equations/526292: x^2-6x+5=0 1 solutions
Answer 348475 by jim_thompson5910(28707) on 2011-11-04 20:29:27 (Show Source):
You can put this solution on YOUR website!
 Start with the given equation.
Notice that the quadratic  is in the form of  where  ,  , and
Let's use the quadratic formula to solve for "x":
 Start with the quadratic formula
 Plug in  ,  , and
 Negate  to get  .
 Square  to get  .
 Multiply  to get
 Subtract  from  to get
 Multiply  and  to get  .
 Take the square root of  to get  .
 or  Break up the expression.
 or  Combine like terms.
 or  Simplify.
So the solutions are  or
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Quadratic_Equations/526361: 2x^2+5x-1
Find the x-intercepts for the function.
x^2+5/2x=1/2 is where I am at now. I don't know how to get the next step to get the answer. 1 solutions
Answer 348455 by jim_thompson5910(28707) on 2011-11-04 19:07:22 (Show Source):
You can put this solution on YOUR website!To find the x-intercepts of  , we need to solve  for x.
 Start with the given equation.
Notice that the quadratic  is in the form of  where  ,  , and
Let's use the quadratic formula to solve for "x":
 Start with the quadratic formula
 Plug in  ,  , and
 Square  to get  .
 Multiply  to get
 Rewrite  as
 Add  to  to get
 Multiply  and  to get  .
 or  Break up the expression.
So the exact solutions are  or
which approximate to  or  (by using a calculator)
So the x-intercepts are (0.186, 0) and (-2.686, 0)
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Equations/525989: -3+5-2x+8=12 1 solutions
Answer 348278 by jim_thompson5910(28707) on 2011-11-03 20:54:51 (Show Source):
You can put this solution on YOUR website! Start with the given equation.
 Combine like terms on the left side.
 Subtract  from both sides.
 Combine like terms on the right side.
 Divide both sides by  to isolate  .
 Reduce.
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Answer:
So the solution is
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Travel_Word_Problems/525978: An airplane descends from 42,000 ft to 18,000 in 12 minutes. Express its rate of change in altitude in feet per minute as a signed number. (This chapter is discussing integers in multiplication and division.) 1 solutions
Answer 348277 by jim_thompson5910(28707) on 2011-11-03 20:52:50 (Show Source):
You can put this solution on YOUR website!(18000-42000)/12
(-24000)/12
-2000
So the rate of change is -2000 ft/min
Basically, the plane is descending 2000 feet every minute.
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