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# Recent problems solved by 'umnikmo'

 logarithm/609812: √2:(9)=3 It asks the Equation in logarithmic form is: I'm not sure how to answer this. i dont understand logarithm form1 solutions Answer 384006 by umnikmo(75)   on 2012-05-11 09:32:01 (Show Source): You can put this solution on YOUR website!Logarithm with base 3 of 9 equals 2
 Quadratic_Equations/609876: how do you find the roots of 9x^2-650=01 solutions Answer 384003 by umnikmo(75)   on 2012-05-11 09:28:30 (Show Source): You can put this solution on YOUR website!9x^2=650 x^2=650/9 x1=sqrt(650/9)=8.498366 x2=-sqrt(650/9)=-8.498366
 absolute-value/609894: 5(7−2)5 =1 solutions Answer 384002 by umnikmo(75)   on 2012-05-11 09:26:24 (Show Source): You can put this solution on YOUR website!=5*5*5=125
 Rectangles/546727: A rectangle has a perimeter of 34ft. and an area of 60 sq. ft. Find its dimensions.1 solutions Answer 356083 by umnikmo(75)   on 2011-12-13 16:01:47 (Show Source): You can put this solution on YOUR website!2(x+y)=34 x*y=60 x=60/y 60/y+y=17 y^2-17y+60=0 y=5 x=60/5=12
 Surface-area/546733: Area = 18 in squared height = 12 in base = 1 solutions Answer 356082 by umnikmo(75)   on 2011-12-13 15:59:29 (Show Source): You can put this solution on YOUR website!1.5
 Square-cubic-other-roots/546732: square root of X plus 4 is equal to 12 1 solutions Answer 356081 by umnikmo(75)   on 2011-12-13 15:59:01 (Show Source): You can put this solution on YOUR website!64
 Pythagorean-theorem/544191: a=3.c=51 solutions Answer 355040 by umnikmo(75)   on 2011-12-08 16:29:52 (Show Source): You can put this solution on YOUR website!b=4
 Quadratic_Equations/543969: r^2=91 solutions Answer 354989 by umnikmo(75)   on 2011-12-08 10:21:37 (Show Source): You can put this solution on YOUR website!r=3 or -3
 Expressions-with-variables/543974: I need help with solving for X. 6-3x=5x-10x+181 solutions Answer 354988 by umnikmo(75)   on 2011-12-08 10:21:07 (Show Source): You can put this solution on YOUR website!6-3x=-5x+18 2x=12 x=6
 Linear-systems/543980: I have to do this with the substitution method: Help me please 3x = 4y x = (2y+1)/3 I know the answer is x=2/3 and y = 1/2 but I don't know the method Thank you1 solutions Answer 354987 by umnikmo(75)   on 2011-12-08 10:19:51 (Show Source): You can put this solution on YOUR website!from the first we can find x in terms of y: x=4y/3, now we substitute this into second equation, we get: 4y/3=(2y+1)/3 we can multiply both sides by 3: 4y=2y+1 2y=1 y=1/2. now, as x=4y/3=4*(1/2)/3=2/3 same as your answers.
 Inequalities/543957: Helping kid with homework, been too long, Please help. solve in interval notation |6x – 1| ≤ 7 1 solutions Answer 354986 by umnikmo(75)   on 2011-12-08 09:47:31 (Show Source): You can put this solution on YOUR website!fist we assume 6x-1>0 so x>1/6 6x-1<=7 6x<=8 x<=4/3 so x E (1/6;4/3] now we assume 6x-1<=0 so x<=1/6 1-6x<=7 x>=-1 so x E [-1;1/6] Ans: x E [-1;4/3]
 Inequalities/543947: I am trying to help my daughter with her homework and it has been quite a while for me. Thanks for your help. Solve with answer in interval notation 3x + 5(x - 4) + 7 < 5(x -1) + 2x 1 solutions Answer 354985 by umnikmo(75)   on 2011-12-08 09:39:39 (Show Source): You can put this solution on YOUR website!3x+5x-20+7<5x-5+2x 8x-13<7x-5 x<8
 Inequalities/543953: Please help, trying to help daughter with homework and it has been so long. Solve in interval notation X2 + 5x – 14 > 0 1 solutions Answer 354984 by umnikmo(75)   on 2011-12-08 09:33:53 (Show Source): You can put this solution on YOUR website!(x+7)(x-2)>0 x E (- infinity; -7)U(2;+infinity)
 test/543942: (3/8)³1 solutions Answer 354983 by umnikmo(75)   on 2011-12-08 09:31:07 (Show Source): You can put this solution on YOUR website!=3^3/(8^3)=27/512
 Exponents-negative-and-fractional/543943: how to get the answer for 6-(-8)1 solutions Answer 354982 by umnikmo(75)   on 2011-12-08 09:30:17 (Show Source): You can put this solution on YOUR website!6-(-8)=6+8=14
 Functions/543416: what is 4,420 minus 8%?1 solutions Answer 354830 by umnikmo(75)   on 2011-12-07 15:10:09 (Show Source): You can put this solution on YOUR website!4420-.08*4420=4066.4
 Evaluation_Word_Problems/543383: translate to an inequality My Salary next year will be at least \$41,000 The price of a baseball glove is no more than \$41.991 solutions Answer 354824 by umnikmo(75)   on 2011-12-07 14:37:21 (Show Source):
 Word_Problems_With_Coins/543387: A coin collector has 61 dimes and nickels with a total face value of \$5.25. How many of each coin does she have?1 solutions Answer 354822 by umnikmo(75)   on 2011-12-07 14:34:27 (Show Source): You can put this solution on YOUR website!X-dimes Y-Nickels X+Y=61 10X+5Y=525 X=61-Y 10(61-Y)+5Y=525 610-10Y+5Y=525 85=5Y Y=17 X=61-17=44. CHECK: 10*44+5*17=525
 test/543391: 3a+3b+b+b1 solutions Answer 354821 by umnikmo(75)   on 2011-12-07 14:30:06 (Show Source): You can put this solution on YOUR website!3a+5b
 Linear-equations/543364: Determine whether the ordered pair is a solution of the given linear equation. 2x + 5y = -8; (-2,-2)1 solutions Answer 354814 by umnikmo(75)   on 2011-12-07 13:49:59 (Show Source): You can put this solution on YOUR website!lets substitute the given pair into the equation: 2*(-2)+5*(-2)=-4-10=-14, which is not equal to -8, so the pair is not a solution.
 Number-Line/543374: -2>x≥-51 solutions Answer 354812 by umnikmo(75)   on 2011-12-07 13:47:52 (Show Source): You can put this solution on YOUR website!if you want somebody do the work for you, at least provide enough details.
 Miscellaneous_Word_Problems/543298: To obtain the height of a tree, you measure the tree's shadow and find that it is 8 meters long. You also measure the shadow of a 2 meters lamppost and find that it is 75cm long. Find the height of the tree.1 solutions Answer 354809 by umnikmo(75)   on 2011-12-07 13:00:17 (Show Source): You can put this solution on YOUR website!2/x=.75/8 from here x= 21.33m
 Polynomials-and-rational-expressions/543347: Factor the follwing polynomials. 1) 14x^2y + 4xy^2 + 2xy i think it is 2xy(7x+2y)1 solutions Answer 354808 by umnikmo(75)   on 2011-12-07 12:57:18 (Show Source): You can put this solution on YOUR website!2xy(7x+2y)+1
 Money_Word_Problems/543246: What is the commision rate of 2,000 dollars and 7.5%1 solutions Answer 354804 by umnikmo(75)   on 2011-12-07 10:50:04 (Show Source): You can put this solution on YOUR website!2000*.075=150
 test/543256: 1 solutions Answer 354802 by umnikmo(75)   on 2011-12-07 10:48:46 (Show Source):
 test/543289: Solve for x: 2x+3y=9xy1 solutions Answer 354801 by umnikmo(75)   on 2011-12-07 10:47:11 (Show Source): You can put this solution on YOUR website!2x-9xy=-3y x(2-9y)=-3y x=3y/(9y-2)
 Probability-and-statistics/543294: Is -1.4 a possible answer to a probability problem?1 solutions Answer 354799 by umnikmo(75)   on 2011-12-07 10:44:30 (Show Source): You can put this solution on YOUR website!if you are looking for a probability of something, you are looking for a number between 0 and 1.
 Evaluation_Word_Problems/543302: Joe's electric made 16 customer calls last week and 21 calls this week. how many calls must be made next in order to maintain anaverage of at least 19 calls per week for the three week period.1 solutions Answer 354798 by umnikmo(75)   on 2011-12-07 10:42:48 (Show Source): You can put this solution on YOUR website!Avr = 19 = (16+21+X)/3 from there : 3*19=16+21+X X=20
 Linear-equations/522815: how to graph x+y=31 solutions Answer 347012 by umnikmo(75)   on 2011-10-28 14:08:33 (Show Source): You can put this solution on YOUR website!set y=3-x pick two points x=0 => y=3 (0,3) and y=0 => x=3 (3,0) draw a straight line thru these two points, you got your graph
 Linear-equations/522811: can any one help me on ways to solve algebra equations ? like : combining like terms linear word problems solving equations : one- two - multi-step equations ? id truly appreciate if you taught me any tricks to solve them too 1 solutions Answer 347010 by umnikmo(75)   on 2011-10-28 13:53:36 (Show Source): You can put this solution on YOUR website!post your problems here