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Recent problems solved by 'elima'

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 Exponents/97994: Simplify. Use positive exponents. (3x^-3 X x^6)/y^-21 solutions Answer 71306 by elima(1433)   on 2007-09-13 19:37:52 (Show Source): You can put this solution on YOUR website! I believe this to be the actual problem? Negative exponents turn integers into fractions, and if they are already in the denominator they are flipped into the numerator. Now you cancel the x's, you have six in the numerator and 3 in the denominator, cancel out three, and you are left with; :)
 Linear-systems/97849: This question is from textbook if five times the smaller of two consecutive integers is added to three times the larger, the result is 59. find the integer1 solutions Answer 71266 by elima(1433)   on 2007-09-13 12:21:04 (Show Source): You can put this solution on YOUR website!Let x be the smaller number; x+1 is the larger number; 5x+3(x+1)=59 5x+3x+3=59 8x=59-3 8x=56 x=7 x+1=8 So the numbers are; 7,8 :)
 Functions/97851: how do i make an input-output table for a function? 1 solutions Answer 71263 by elima(1433)   on 2007-09-13 11:45:01 (Show Source): You can put this solution on YOUR website!You choose a value for x and solve the function for your output(y). :)
 Equations/97856: 1-1/8z=z-3/41 solutions Answer 71235 by elima(1433)   on 2007-09-13 09:48:38 (Show Source): You can put this solution on YOUR website!1-1/8z=z-3/4 first add 3/4 and 1/8z to both sides; 1+3/4=z+1/8z 1=1z I like to turn mixed fractions into improper; =z divide each side by =z =z =z :)
 Expressions-with-variables/97802: How do you solve 4x-y=19? Do you replace in the x and then a y with any #?1 solutions Answer 71184 by elima(1433)   on 2007-09-12 20:55:53 (Show Source): You can put this solution on YOUR website!You choose a value for one of the variables and then solve the equation for the other. 4x-y=19 choose a value for x; x=1 4(1)-y=19 4-y=19 -y=15 y=-15 If you are asked to graph, then you should choose at least 3 values for x and then solve for y. :)
 expressions/97738: This question is from textbook algebra1 2x+3x+5-4=25 what is the main answer1 solutions Answer 71174 by elima(1433)   on 2007-09-12 20:32:18 (Show Source): You can put this solution on YOUR website!2x+3x+5-4=25 Collect like terms; 5x+1=25 subtract 1 from both sides; 5x=24 divide each side by 5; :)
 Functions/97756: IS this a function? {(3,7),(3,8),(3,-2),(3,4),(3,1)} 1 solutions Answer 71171 by elima(1433)   on 2007-09-12 20:29:01 (Show Source): You can put this solution on YOUR website!No, because you can not have the same values for your x. :)
 Equations/97753: This question is from textbook HOLT PRE-ALGEBRA n/3-4=11 solutions Answer 71169 by elima(1433)   on 2007-09-12 20:27:14 (Show Source): You can put this solution on YOUR website! Add 4 to both sides; multiply each side by 3; n=5*3 n=15 :)
 Miscellaneous_Word_Problems/97752: the sum of two consecutive positive integers is less than or equal to 10. Find the integers.1 solutions Answer 71168 by elima(1433)   on 2007-09-12 20:24:04 (Show Source): You can put this solution on YOUR website!Let x be the first positive integer x+2 is the next positive integer so your fist positive integer = 4 4+2=6 the second positive integer :)
 Graphs/97739: I got this wrong on my homework and would appreciate if you could go over it. The question reads, find the slope and y-intercept of each line. Graph the line by hand. I also needed a x y chart. -x+3y=61 solutions Answer 71165 by elima(1433)   on 2007-09-12 20:18:38 (Show Source): You can put this solution on YOUR website!All the tutors do not have the same book as you, so you should post the problem. :)
 Numbers_Word_Problems/97742: Of the three consecutive integers, the sum of the smallest two integers is equal to 33 less than three times the largest. Find the integers.1 solutions Answer 71117 by elima(1433)   on 2007-09-12 17:44:12 (Show Source): You can put this solution on YOUR website!Let the first integer = x the next one = x +1 the third = x+2 x+(x+1)=3(x+2)-33 2x+1=3x+6-33 2x-3x=6-33-1 -1x=-28 x=28 1st integer = 28 second = 29 third = 30 check: 28+29=3(30)-33 57=57 :)
 test/97732: find the total surface area of a cylinder with a radius 3 and height 8.1 solutions Answer 71115 by elima(1433)   on 2007-09-12 17:34:42 (Show Source): You can put this solution on YOUR website!SA = substitute; SA= SA = SA = SA = 56.52 + 150.72 SA = 207.24 :)
 Linear-systems/97731: x-2y=6 1 solutions Answer 71114 by elima(1433)   on 2007-09-12 17:29:02 (Show Source): You can put this solution on YOUR website!x-2y=6 To solve this you choose values for x and solve for y; when x = 2; (2)-2y=6 -2y=4 y=-2 x=2, y =-2 If you need to graph, you should choose at least 3 values for x. :)
 test/97724: a rectangular solid with a length 8 and width 2 has volume 48. find its height.1 solutions Answer 71110 by elima(1433)   on 2007-09-12 16:52:30 (Show Source): You can put this solution on YOUR website!V=lwh 48=(8)(2)h 48=16h =h h=3 :)
 test/97723: what is the volume of a cube with the edge of 2?1 solutions Answer 71109 by elima(1433)   on 2007-09-12 16:49:38 (Show Source): You can put this solution on YOUR website!V= V= V=8 :)
 Geometry_Word_Problems/97721: The length of a rectangular playing field is 5 feet less than it's width. If the perimeter of the playing field is 230 feet, find the length and width of the field.1 solutions Answer 71108 by elima(1433)   on 2007-09-12 16:47:31 (Show Source): You can put this solution on YOUR website!P=2(L+W) P=230 L=w-5 230=2(w-5+w) 230=2(2w-5) 230=4w-10 240=4w 60=w L=60-5=55 :)
 test/97719: i have to find the volume of a sphere with a radius 3 cm. i have to leave answer in terms of pie.1 solutions Answer 71107 by elima(1433)   on 2007-09-12 16:41:36 (Show Source): You can put this solution on YOUR website!V= V= V= V= V= :)
 test/97718: i have to find the volume of a right cone with a radius 6 cm and height 10 cm. i have to leave answer in terms of pie.1 solutions Answer 71106 by elima(1433)   on 2007-09-12 16:31:34 (Show Source): You can put this solution on YOUR website!V= V= V= V= V= V= :)
 test/97717: i have to find the volume of a right cylinder with a radis 4 cm and height 7 cm. i have to leave answer in terms of pie.1 solutions Answer 71104 by elima(1433)   on 2007-09-12 16:18:48 (Show Source): You can put this solution on YOUR website!V = V= V= V= :)
 Inverses/97768: k-13=181 solutions Answer 71102 by elima(1433)   on 2007-09-12 16:13:54 (Show Source): You can put this solution on YOUR website!k-13=18 add 13 to both sides; k-13+13=18+13 k=31 :)
 test/97716: i have to find the volume of a rectangular square pyramid with a base edge 4 and height 6 m.1 solutions Answer 71101 by elima(1433)   on 2007-09-12 16:12:34 (Show Source): You can put this solution on YOUR website!V= V= V= V=8 :)
 test/97714: i have to find the total area of a cube with edge 4.1 solutions Answer 71100 by elima(1433)   on 2007-09-12 16:08:08 (Show Source): You can put this solution on YOUR website!SA = SA = SA = :)
 test/97711: i have to find the volume of a rectanglar solid with a lenth 8, width 4, and height 2. 1 solutions Answer 71099 by elima(1433)   on 2007-09-12 16:00:54 (Show Source): You can put this solution on YOUR website!v=lwh v = (8)(4)(2) v = 64 :)
 Proportions/97507: adults and=or students = 2/15 = x/1801 solutions Answer 70996 by elima(1433)   on 2007-09-11 20:26:48 (Show Source): You can put this solution on YOUR website!adults/students = 2/15 = x/180 You need to cross multiply to solve; 2*180=15x 360=15x Divide each side by 15 24=x :) - (23293) i got 0.13
 Proportions/97480: state weather the ratios are proportional 1. 50 over 40 equal 5 over 4 2. 12 to 11, 36 to 33 3. 20:40, 1:2 4. 33 over 36 equals 44 over 481 solutions Answer 70994 by elima(1433)   on 2007-09-11 20:19:22 (Show Source): You can put this solution on YOUR website!They are proportional if when you cross multiply they equal; 1. 50 over 40 equal 5 over 4 50*4=200 40*5=200 2. 12 to 11, 36 to 33 12*33=396 36*11=396 3. 20:40, 1:2 20*2=40 1*40=40 4. 33 over 36 equals 44 over 48 33*48=1584 44*36=1584 They are all proportions :)
 Expressions-with-variables/97592: write an algebraic expression for 6 more than twice m 1 solutions Answer 70992 by elima(1433)   on 2007-09-11 20:13:33 (Show Source): You can put this solution on YOUR website!2m+6 :)
 Proportions/97481: can you please help me with my homework. create a proportion from each set of numbers 1. 12,36,1,3 2. 11,6,33,18 3. 8,48,30,5 4. 33,22,3,2 1 solutions Answer 70990 by elima(1433)   on 2007-09-11 20:12:40 (Show Source): You can put this solution on YOUR website!1. 12,36,1,3 2. 11,6,33,18 3. 8,48,30,5 4. 33,22,3,2 :)
 Square-cubic-other-roots/97483: This question is from textbook Beginning Algebra I am having a little trouble with this problem. Find the perimeter of the triangle. Side 1 = 4 Side 2 = sqrt 5 - sqrt 3 Side 3 = sqrt 5 + sqrt 3 The perimeter would equal 4 + sqrt5 - sqrt3 + sqrt5 + sqrt3 1 solutions Answer 70986 by elima(1433)   on 2007-09-11 20:06:13 (Show Source): You can put this solution on YOUR website!The perimeter would equal 4 + Now collect like terms; 4 + ()+() 4 + :)
 Proportions/97487: can you help me with the following questions thanks write each ratio in simpiest form 1. 65 to 65 2. 32 to 26 3. 30 over 50 4. 57:60 1 solutions Answer 70982 by elima(1433)   on 2007-09-11 19:55:30 (Show Source): You can put this solution on YOUR website!1. 65 to 65 = =1 2. 32 to 26 = = 3. 30 over 50= = 4. 57:60== :)
 Signed-numbers/97491: Find the value of the expression 1 solutions Answer 70976 by elima(1433)   on 2007-09-11 19:45:12 (Show Source): You can put this solution on YOUR website!It is a good idea to post your problem, because we do not all have the same book.
 Inequalities/97275: Hello out there,I rally need some help with some problems,the first one is,Write an inequality to describe a number greater than three.The next one is,Write an inequality to describe a number less than or equal to -2.The next one is,Solve the inequality:y+4>-2.And the last one is,Solve the inequality:x-3<5.Thanks for whoever can help.1 solutions Answer 70812 by elima(1433)   on 2007-09-10 20:04:42 (Show Source): You can put this solution on YOUR website!Write an inequality to describe a number greater than three.The next one is,Write an inequality to describe a number less than or equal to -2.The next one is,Solve the inequality:y+4>-2.And the last one is,Solve the inequality:x-3<5 1) x>3 2) 3)y+4>-2 subtract 4 from both sides; y>-6 4)x-3<5 add 3 to both sides; x<8 :)