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 Matrices-and-determiminant/502433: x-2y+2z=3 2x-4y+z=4 x+y+z=4 solve using gauss jordan method1 solutions Answer 338854 by Alan3354(31538)   on 2011-09-22 11:27:25 (Show Source): You can put this solution on YOUR website!x-2y+2z=3 2x-4y+z=4 x+y+z=4 solve using gauss jordan method ---------------- Do it like this: http://pages.pacificcoast.net/~cazelais/251/gauss-jordan.pdf There are many sites showing how to do this, and some that will calculate the answers to your problem.
 Linear-equations/502417: y=12 when x=41 solutions Answer 338853 by Alan3354(31538)   on 2011-09-22 10:45:54 (Show Source): You can put this solution on YOUR website!That's the point (4,12)
 Numbers_Word_Problems/502408: The sum of the page numbers on the facing pages of a book is 295. What are the page numbers?1 solutions Answer 338852 by Alan3354(31538)   on 2011-09-22 10:44:37 (Show Source): You can put this solution on YOUR website!295/2 = 147.5 --> 147 & 148
 Expressions-with-variables/502431: Given that , then find: i) the value of when and , ii) x in terms of and . *Please answer as soon as possible bro :)1 solutions Answer 338851 by Alan3354(31538)   on 2011-09-22 10:41:24 (Show Source): You can put this solution on YOUR website!Given that , then find: i) the value of when and y = (1/4)/(1/4 - 3/16) = (1/4)/(1/16) y = 4 ------------- ii) x in terms of and y*(a-x) = a ay - xy = a xy = ay - a x = a - (a/y)
 decimal-numbers/502381: hello their 1 solutions Answer 338850 by Alan3354(31538)   on 2011-09-22 10:37:19 (Show Source): You can put this solution on YOUR website!hello their [sic] Hi there.
 Square-cubic-other-roots/502432: Given that , calculate the value of . *Please answer as soon as possible bro :)1 solutions Answer 338849 by Alan3354(31538)   on 2011-09-22 10:36:02 (Show Source): You can put this solution on YOUR website!Given that , calculate the value of . --------- x = -1/3, 1/3
 Travel_Word_Problems/502416: how long does it take a car to cover a distance 20 km at constant speed of 50 km/h1 solutions Answer 338847 by Alan3354(31538)   on 2011-09-22 10:31:21 (Show Source): You can put this solution on YOUR website!d = r*t t = d/r
 Polynomials-and-rational-expressions/502277: Hi. I am having trouble with stating restrictions for variables in rational expressions. the question i am having a problem with is: 3+x/x(x-2). all i have got so far is let x(x-2)=0. i was told that to state the restriction let the denominator =0. then solve for the variable. I don't know what my next steps are. please help!1 solutions Answer 338807 by Alan3354(31538)   on 2011-09-21 22:47:48 (Show Source): You can put this solution on YOUR website!The denominator cannot be zero. If x(x-2) = 0, then either x = 0 or x = 2. --> x<>0 and x<>2 That's all.
 Equations/502253: Ok im suppose to rewrite this equation 3x + 5y = 7 how do I rewrite it?1 solutions Answer 338805 by Alan3354(31538)   on 2011-09-21 22:37:21 (Show Source): You can put this solution on YOUR website!3x + 5y - 7 = 0 is one way.
 Word_Problems_With_Coins/502266: A cash register contains only dimes and quarters. There are 65 coins worth \$12.80 in the register. How many dimes and quarters are in the register? I have tried to set up but can't figure it out. i.e. I tried: 65 - .10d = quarters 65 - .10d + ??? = 12.801 solutions Answer 338804 by Alan3354(31538)   on 2011-09-21 22:34:46 (Show Source): You can put this solution on YOUR website!A cash register contains only dimes and quarters. There are 65 coins worth \$12.80 in the register. How many dimes and quarters are in the register? I have tried to set up but can't figure it out. i.e. I tried: 65 - .10d = quarters 65 - .10d + ??? = 12.80 -------------------- 65 - d = q 10d + 25q = 1280 ----------
 Equations/502222: I Just dont get equasions i am just looking for an easier way to learn them than my teacher teaches me. 12-11a=45 18=-a+2 -8c+1=-31 solutions Answer 338784 by Alan3354(31538)   on 2011-09-21 21:39:33 (Show Source): You can put this solution on YOUR website!I don't know what that teaching method might be. ---------- 12-11a=45 The idea is to isolate the variable, ie, get it on one side of the equal sign by itself. 12-11a=45 Get rid of the 12 and the -11. Subtract 12 (from both sides) -11a = 33 Divide by the 11 -a = 3 Times -1 a = 3 Not a big deal. ------------- You do these, any way you want. Just get the a (and the c) alone. 18=-a+2 -8c+1=-3
 Graphs/502023: HOW DO I GRAPH THIS y=2=2(x-5)1 solutions Answer 338759 by Alan3354(31538)   on 2011-09-21 18:43:10 (Show Source): You can put this solution on YOUR website!I don't know, too many equal signs for me.
 Exponents/502028: the question on the homework is stated this way: rewrite each product using exponents 1. 3*3*5*5*5 2. 2*2*7*7 3. 5*5*7*71 solutions Answer 338758 by Alan3354(31538)   on 2011-09-21 18:42:32 (Show Source): You can put this solution on YOUR website!rewrite each product using exponents 1. 3*3*5*5*5 2. 2*2*7*7 3. 5*5*7*7 --------- Hint: There are two 3's. There are 3 5's.
 Mixture_Word_Problems/502038: How many kg of salt are in 70 kiters1 solutions Answer 338757 by Alan3354(31538)   on 2011-09-21 18:40:47 (Show Source): You can put this solution on YOUR website!If you mean liters, liters of what?
 Linear-equations/502039: y=-x-9 3x-y=-11 what are the graph points1 solutions Answer 338756 by Alan3354(31538)   on 2011-09-21 18:40:02 (Show Source): You can put this solution on YOUR website!What's a "graph point?"
 Reduction-of-unit-multipliers/502036: How many feet are there in 20,000 inches?1 solutions Answer 338755 by Alan3354(31538)   on 2011-09-21 18:39:33 (Show Source): You can put this solution on YOUR website!1 foot = 12 inches Divide it by 12
 test/502026: I don't understand how to figure out what formula to use when doing algebra1 solutions Answer 338754 by Alan3354(31538)   on 2011-09-21 18:39:03 (Show Source): You can put this solution on YOUR website!There are different formulas for different things. Look at the solved problems on this site. ------------- "What formula to use" is less important than how to solve the problem.
 Linear-equations/502035: y=-6x+7 find the slope of a line paralle1 solutions Answer 338753 by Alan3354(31538)   on 2011-09-21 18:37:05 (Show Source): You can put this solution on YOUR website!-6 Do you know how I know?
 Average/502033: what is the average(arithmetic mean) of 8,7,7,5,3,2 and 2? solution in fraction1 solutions Answer 338752 by Alan3354(31538)   on 2011-09-21 18:36:24 (Show Source): You can put this solution on YOUR website!There are 7 numbers. Add them, divide by 7.
 Rectangles/501968: If the perimeter of a square is 76 inches, what is its area?1 solutions Answer 338750 by Alan3354(31538)   on 2011-09-21 18:28:11 (Show Source): You can put this solution on YOUR website!The sides are equal. Find s, the length of the sides.
 Numbers_Word_Problems/502020: The sum of three consecutive integers is 174. What are all three integers?1 solutions Answer 338749 by Alan3354(31538)   on 2011-09-21 18:26:27 (Show Source): You can put this solution on YOUR website!174/3 = 58, the middle number How hard is that to figure out?
 Angles/501993: if two angles are complementary, then the sun of the angles are? if two angles from a linear pair, then the sum od the angles are?1 solutions Answer 338748 by Alan3354(31538)   on 2011-09-21 18:25:38 (Show Source): You can put this solution on YOUR website!if two angles are complementary, then the sun of the angles are? You can look that up. ----------------- if two angles from a linear pair, then the sum od the angles are? That too. -------------- Tutoring is teaching how to solve problems, not looking stuff up.
 Rectangles/502002: The area of a checkerboard is 112 inches squared. What is the approximate length of each side to the nearest inch?1 solutions Answer 338746 by Alan3354(31538)   on 2011-09-21 18:24:06 (Show Source): You can put this solution on YOUR website! 11" to the nearest inch
 Circles/502015: suppose the diameter of a circle is 16 centimeters what is the radius1 solutions Answer 338745 by Alan3354(31538)   on 2011-09-21 18:22:28 (Show Source): You can put this solution on YOUR website!It's 1/2 of the diameter.
 Polygons/501983: each exterior of a polygon measures 45 degrees find the sum of the measures of the polygons interior angels1 solutions Answer 338744 by Alan3354(31538)   on 2011-09-21 18:18:26 (Show Source): You can put this solution on YOUR website!The sum of exterior angles for ALL polygons is 360 degs. 360/45 = 8 sides 8*(180 - 45) = 1080 degs -------- Or, 180*(n-2) = 180*6 = 1080 degs
 Unit_Conversion_Word_Problems/501999: Can you help me solve this problem...rejon just bought a new pair of shoes. The volume of the shobox is 1/3 cubic yards....what is its volume in cubic feet?1 solutions Answer 338743 by Alan3354(31538)   on 2011-09-21 18:16:22 (Show Source): You can put this solution on YOUR website!9 cf Big box for shoes.
 Points-lines-and-rays/502007: I was wondering if I could get a little help on finding X here is what the problem is: Solve the equation for x. Substitute your value into the original equation to check. -8(11-4x)+9= -231 solutions Answer 338742 by Alan3354(31538)   on 2011-09-21 18:15:02 (Show Source):
 Points-lines-and-rays/502006: I was wondering if I could get a little help on finding X here is what the problem is: Solve the equation for x. Substitute your value into the original equation to check. -8(11-4x)+9= -23 If you could help that would be great thank you. 1 solutions Answer 338741 by Alan3354(31538)   on 2011-09-21 18:14:45 (Show Source):
 Points-lines-and-rays/502008: I was wondering if I could get a little help on finding X here is what the problem is: Solve the equation for x. Substitute your value into the original equation to check. -8(11-4x)+9= -231 solutions Answer 338740 by Alan3354(31538)   on 2011-09-21 18:14:23 (Show Source): You can put this solution on YOUR website!dup
 absolute-value/502003: |x-9|<0 1 solutions Answer 338739 by Alan3354(31538)   on 2011-09-21 18:14:01 (Show Source): You can put this solution on YOUR website!The absolute value is never <0, it's always zero or positive. No solution.
 Points-lines-and-rays/502004: I was wondering if I could get a little help on finding X here is what the problem is: Solve the equation for x. Substitute your value into the original equation to check. -8(11-4x)+9= -23 If you could help that would be great thank you. 1 solutions Answer 338737 by Alan3354(31538)   on 2011-09-21 18:12:48 (Show Source): You can put this solution on YOUR website!-8(11-4x)+9= -23 -88+32x + 9 = -23 -79+32x = -23 32x = 56 x = 56/32 x = 7/4