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# Recent problems solved by 'elima'

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 Proportions/24268: how do i do a proportion using fractions and decimals.?1 solutions Answer 12921 by elima(1433)   on 2006-01-12 18:52:06 (Show Source): You can put this solution on YOUR website!If I understand your question correctly, you need to turn the decimal into a fraction. It would be better if you posted a problem. =)
 Quadratic_Equations/24310: 5=6/x+21 solutions Answer 12918 by elima(1433)   on 2006-01-12 18:38:13 (Show Source): You can put this solution on YOUR website!5=+2 5-2= 3= 3x=6 x= x=2 hope you understand =)
 Coordinate-system/24313: what is a slope?1 solutions Answer 12917 by elima(1433)   on 2006-01-12 18:33:27 (Show Source): You can put this solution on YOUR website!The measure of stepness of a line as you look at it from left to right. slope= =)
 Equations/24318: hi, I need your help with multi-step equations with fractions! The problem is 3/4(b+8)=15. I have gotten as far as 3/4 times b. Please help!1 solutions Answer 12916 by elima(1433)   on 2006-01-12 18:17:23 (Show Source): You can put this solution on YOUR website!3/4(b+8)=15 You need to also distribute the 3/4 to 8; (b)+(8)=15 b+=15 b+6=15 b=9 Now multiply each side by the reciprical of , which is ; b=(9) b= b=12 hope you understand =)
 Systems-of-equations/24319: 7x-3y=64 6x=3y=66 after i cancel the threes what do i do to solve for x?1 solutions Answer 12915 by elima(1433)   on 2006-01-12 18:10:47 (Show Source): You can put this solution on YOUR website!After you cancel the 3's, you want add the 7x + 6x and 64+66; 7x-3y=64 6x=3y=66 -------- 13x =130 = x=10 Hope you understand =)
 Inequalities/24222: x>=2x-41 solutions Answer 12911 by elima(1433)   on 2006-01-12 15:08:06 (Show Source): You can put this solution on YOUR website!x>=2x-4 Subtract -2x from both sides; divide ecahside by -1; Hope you understand =)
 Quadratic_Equations/24204: how do you plot the table?1 solutions Answer 12904 by elima(1433)   on 2006-01-12 09:38:13 (Show Source): You can put this solution on YOUR website!Do you mean when your are given a table of x and y points? ex. x|y --- 0|2 1|3 2|1 your points would be; (0,,2), (1,3), (2,1) You would plott those on the graph, then draw a line connecting them. Hope I understood what you were asking, it is a little difficult to understand some of the questions completely because you are limited to the way you can ask a queastion. Hope I got it =)
 Inequalities/24216: -15p is less than or equal to -901 solutions Answer 12902 by elima(1433)   on 2006-01-12 09:19:58 (Show Source): You can put this solution on YOUR website! Divide both sides by -15; =)
 Expressions-with-variables/24253: How do I graph y-x=-5 ? could you show me step by step please . THANKS !! 1 solutions Answer 12901 by elima(1433)   on 2006-01-12 09:16:16 (Show Source): You can put this solution on YOUR website!You start by making a table and choosing values for x and then solving the equation for y. y-x=-5 when x=0; y-(0)=-5 y=-5 then y=-5 when x=1 y-(1)=-5 y=-5+1 y=-4 then y=-4 when x=2 y-(2)=-5 y=-5+2 y=-3 then y=-3 Now you have three points, so you plot them on the graph and draw a line connecting them.
 Numeric_Fractions/24203: ok if this is my promblem 2and4/5j for j = 3/7 it would be 2and4/5 times 3/7 right 1 solutions Answer 12900 by elima(1433)   on 2006-01-12 09:07:50 (Show Source): You can put this solution on YOUR website!Yes, it looks like that is correct if I am reading the roblem correctly. =)
 Expressions-with-variables/24211: Can you please explain to me how to solve this problem x+y=4 and -3x+12 using substitution?1 solutions Answer 12899 by elima(1433)   on 2006-01-12 09:05:48 (Show Source): You can put this solution on YOUR website!Did you write the whole problem correctly? It looks like you may have forgotten some of the second equation. =)
 Inequalities/24209: i have been lost in algebra completley from the start how do i prep for the taks test?..can i get tutoring over all algebra?1 solutions Answer 12898 by elima(1433)   on 2006-01-12 09:01:44 (Show Source): You can put this solution on YOUR website!Where do you live? I do tutoring, or else you can go to www.tutorsteach.com and locate a tutor near you. Good luck =)
 absolute-value/24223: dividend, divider, quotient, remainder. For example : 11/2 , 11 is the dividend, 2 is the divider. After division, we'll get 5 as the quotient & 1 as the remainder. This is what I learned in my country. In U.S.A., do we use any other names for dividend divider, quotient & remainder. REJI 1 solutions Answer 12874 by elima(1433)   on 2006-01-11 20:01:34 (Show Source): You can put this solution on YOUR website!We use the same names, andit works out the same. =)
 Evaluation_Word_Problems/24219: The product of a number and 3 is twice the sum of that number and five. I can't seem to plot it or seperate it to solve the problem, please help! thanks1 solutions Answer 12873 by elima(1433)   on 2006-01-11 19:56:25 (Show Source): You can put this solution on YOUR website!The product of a number and 3 is twice the sum of that number and five. let x= the number "the product" meansanswer to multiplication, so; 3x= the product of a number and 3; "is" means =; "sum' meansanswer to an addition; "sum of that number and 5"; x+5; "of" means multiply; "twicw the sum" 2(x+5); 3x=2(x+5) 3x=2x+10 3x-2x=10 x=10 hope you understand =)
 Expressions-with-variables/24131: r = 2s - 8 What is s?1 solutions Answer 12863 by elima(1433)   on 2006-01-11 15:43:07 (Show Source): You can put this solution on YOUR website!r=2s-8 add 8 to both sides; r+8=2s divide each side by 2; =s =)
 Expressions-with-variables/24184: I am helping a brother with his homework. How would you work this out?? (4n+5)x5=-n-241 solutions Answer 12861 by elima(1433)   on 2006-01-11 15:22:12 (Show Source): You can put this solution on YOUR website!(4n+5)x5=-n-24 Is that 5x outside the parenthesis or *5? I'm assuming it is *5, if so; (4n+5)*5=-n-24 distribute the 5; 20n+25=-n-24 add n tto both sides; 20n+25+n=-24 subtract 25 to both sides; 21n=-24-25 21n=-49 divide each side by 21; n= n= =)
 Expressions-with-variables/24125: m=(a+b)/2 Solving for a1 solutions Answer 12860 by elima(1433)   on 2006-01-11 15:13:42 (Show Source): You can put this solution on YOUR website!m= Multiply 2 to both sides; 2m=a+b subtract b from both sides; 2m-b=a =)
 Graphs/24168: Graph the equation: 2y+x=-3.1 solutions Answer 12852 by elima(1433)   on 2006-01-11 10:25:15 (Show Source): You can put this solution on YOUR website!2y+x=-3. There are diffeerent ways to solve this. One way is to choose some easy points for x, (say 0, 1, and 2), plug them in, and calculate the corresponding y-values. 2y+(0)=-3 2y=-3 y=-3/2 First point; (0,-3/2) 2y+(1)=-3 2y=-3-1 2y=-4 y=-2 2nd point; (1,-2) 2y+(2)=-3 2y=-3-2 2y=-5 y=-5/2 3rd point; (2,-5/2) Now plot these points on a graph, and you have your line. hope you understand =)
 percentage/24083: I need help with decimals and percents.Well just percents in generalBut I know im doing it right but when I add those two different percents it does not equal 100.1 solutions Answer 12782 by elima(1433)   on 2006-01-10 18:50:25 (Show Source): You can put this solution on YOUR website!You need to post the problem so we can nderstand better what is happening =)
 Equations/24081: 13+f-8f=25x51 solutions Answer 12781 by elima(1433)   on 2006-01-10 18:48:13 (Show Source): You can put this solution on YOUR website!First add like terms; 13-7f=25(5) 13-7f=125 now subtract 13 from both sides; -7f=125-13 -7f=112 divide each side by -7; f=-16 Hope you understand =)
 Linear-equations/24076: Hi my name is Lindsey and i was wondering if u could explain to me how to graph linear inequalities in two variables? thank you so much!!1 solutions Answer 12777 by elima(1433)   on 2006-01-10 18:05:29 (Show Source): You can put this solution on YOUR website!To graph a linear inequality in two variables (say, x and y), first get y alone on one side. Then consider the related equation obtained by changing the inequality sign to an equals sign. The graph of this equation is a line. If the inequality is strict (< or >), graph a dashed line. If the inequality is not strict ( or ), graph a solid line. Example: Graph the inequality . Now, substitute x = 0, y = 0 to decide whether (0, 0) satisfies the inequality This is false. So, shade the half-plane which does not include the point (0, 0). Hope this helps =)
 Equations/24064: PLEASE HELP ME SOLVE THIS EQUATION WORD PROBLEM: At the beginning of the school year , Jamie's height was 62 and 1/2 inches . During the year she grew 1 and 3/4 inches , 1 /8 of an inch more than she grew the previous year. (A) What was jamie's height at the end of the school year? (B) How tall was Jamie at the start of the previous school year? Thank you1 solutions Answer 12775 by elima(1433)   on 2006-01-10 16:37:53 (Show Source): You can put this solution on YOUR website!a)You need to add her hieght at the beginning of the year to how much she grew. 62 1/2 + 1 3/4 = 62 2/4 + 1 3/4=62 5/4= 63 1/4 b)Now subtract 1/8 from 1 3/4, 1 3/4 - 1/8 = 1 5/8 Now subtract that from 62 1/2 62 1/2 - 1 5/8= 60 7/8 So her hieght at the beginningof last year was - 60 7/8 Hope you understand =)
 Equations/24058: 6=-4+h -7+d=-3 9=m+11 f+(-9)=-191 solutions Answer 12774 by elima(1433)   on 2006-01-10 16:19:42 (Show Source): You can put this solution on YOUR website!6=-4+h Add 4 to both sides 6+4=-4+h=4 10=h -7+d=-3 add 7 to both sides; -7+d+7=3+7 d=10 9=m+11 Subtract both sides by 11; 9-11=m+11-11 -2=m f+(-9)=-19 add 9 to both sides; f+(-9)+9=-19+9 f=-10 =)
 Inequalities/23987: How do you find this inequality? -1/3Y GREATER THAN OR EQUAL TO 31 solutions Answer 12771 by elima(1433)   on 2006-01-10 15:38:29 (Show Source): You can put this solution on YOUR website! multiply 3 to both sides; Hope you understand =)
 Equations/23967: How do i get the answer to this problem,it calls for simplification, can you help me? my answer was 2(x^2-x+2) i know its wrong Thank you in advance. elias1 solutions Answer 12769 by elima(1433)   on 2006-01-10 15:22:46 (Show Source): You can put this solution on YOUR website!What was the original problem?
 Equations/23911: how do you solve systems with subtitute's can please solve a few of these example problems so I get an ideal of what I need to do. 1)2x+7y=3 x=1-4y 2)4c=3d+3 c=d-1 3)3x-5y=11 x-3y=1 4)3x-2y=12 x=2y=61 solutions Answer 12768 by elima(1433)   on 2006-01-10 15:20:35 (Show Source): You can put this solution on YOUR website!You are already given what one variable =, so plug that into the equation to solve for the other variable. 1)2x+7y=3 x=1-4y 2(1-4y)+7y=3 2-8y+7y=3 2-y=3 y=3-2 y=1 2x+7(1)=3 2x+7=3 2x=3-7 2x=-4 x=-2 See if you can solve the others, if you have problems let me know. =)
 Graphs/23999: how do you graph this system of linear inequalities... y is less than or equal to 2x+3 y>-x+51 solutions Answer 12763 by elima(1433)   on 2006-01-10 12:43:13 (Show Source): You can put this solution on YOUR website!Diregard the other answers I sent to you. I pressed the wrong button. Start by solving each inequality for y; and put in slope y-intercept form, y=mx+b; y>-x+5 They both are already is in slope intercept form; The first one; your y-intercept = 3 secnd one; y-intercept=5 So what you do on the graph is plot points at your y-intercept; Now your first slope=2 second slope=-1 Now the important part is the shading. since the first eq. is < and = to, you are going to make it a solid line and shade the area BELOW the line. The second eq.is > so you are going to make the line dotted and shade the area ABOVE the line. Hope you understand =)
 Linear-equations/24053: I dont remember what the rules are for reducing a linear equation with this many parentheses in it, Can you help me with this one? Do you start with the inside first and then work your way out or do you work it just from left to right? I tried working from the inside out and came up with 9 instead of the correct answer which is 15... help :( x-{3x-[2x-(8-x)+2]+3}-6=01 solutions Answer 12762 by elima(1433)   on 2006-01-10 12:30:40 (Show Source): You can put this solution on YOUR website!Is the answer 15 or -15? I keep coming up with -15. x-{3x-[2x-(8-x)+2]+3}-6=0 It sounds like you are forgetting the -1 outside the parenthesis and brackets. You need to distribute that before you add like terms. x-{3x-[2x-8+x+2]+3}-6=0 Now add like terms in brackets; x-{3x-[x-6]+3}-6=0 Now distribute the -1 outside the brackets; x-{3x-x+6+3}-6=0 Add like terms inside parenthesis; x-{2x+9}-6=0 now distribute the -1 again outside the par; x-2x-9-6=0 -x-15=0 -x=15 x=-15 =)
 Graphs/23881: how do i write an equation for tables?1 solutions Answer 12746 by elima(1433)   on 2006-01-10 09:12:11 (Show Source): You can put this solution on YOUR website!You need to post a problem along with your question, that way we can understandbetter what you are asking. =)
 Systems-of-equations/23994: please help me solve this equation: 2x+7=5x+161 solutions Answer 12739 by elima(1433)   on 2006-01-10 08:37:47 (Show Source): You can put this solution on YOUR website!2x+7=5x+16 First subtract 7 from each side and 5x; 2x-5x=16-7 -3x=9 now divide each side by -3; x=-3 =)
 Linear_Algebra/24004: please please help i'm returning to school for the first time in years. i received a pop quiz in chemistry and i bombed it i have the quiz to go over. if you could explain one problem to me i think ican figure out the rest (2*10^-2)^2 WHAT DO I DO?? :)1 solutions Answer 12688 by elima(1433)   on 2006-01-09 20:23:05 (Show Source): You can put this solution on YOUR website!First of all you need to do what is in the parenthesis; Now you multiply the exponents; A negative exponent turns it into a fraction; Good Luck with school, that's great that you are returning. I hope we can help more =)