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# Recent problems solved by 'rfer'

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 Angles/349942: one of two supplementary angles is 27 degrees less than 4/5 the other. find the larger angle.1 solutions Answer 250107 by rfer(12660)   on 2010-09-29 21:37:15 (Show Source): You can put this solution on YOUR website!x+.8x-27=180 1.8x=207 x=115 degrees .8x-27=65 degrees
 Angles/349944: Find the number of degrees in an angle which is 20 degrees less than its supplement1 solutions Answer 250105 by rfer(12660)   on 2010-09-29 21:34:52 (Show Source): You can put this solution on YOUR website!x+x-20=180 2x-20=180 2x=200 x=100 dgrees x-2=80 degrees
 Angles/349946: an angle exceeds one-half its complement by 12 degrees. find the angle.1 solutions Answer 250104 by rfer(12660)   on 2010-09-29 21:32:28 (Show Source): You can put this solution on YOUR website!x+.5x+12=90 1.5x=78 x=52 degrees .5x+12=38 degrees
 percentage/349951: an appliance store drops the price of a certain type of tv 18% to a sale price of \$410. what was the original price?1 solutions Answer 250102 by rfer(12660)   on 2010-09-29 21:30:07 (Show Source): You can put this solution on YOUR website!410=82% of original price 410/.82=\$500
 Angles/349949: two angles are supplementary. one angle is three times the size of the other. find the obtuse angle.1 solutions Answer 250099 by rfer(12660)   on 2010-09-29 21:28:34 (Show Source): You can put this solution on YOUR website!x+3x=180 4x=180 x=45 degrees 3x=135 degrees
 Angles/349659: An angle is 6 degrees less than 1/3 its complement. Find the angle1 solutions Answer 249915 by rfer(12660)   on 2010-09-29 11:45:38 (Show Source): You can put this solution on YOUR website!x+1/3x-6=90 1 1/3x=96 x=96*3/4 x=72 degrees 1/3x-6=18 degrees
 Angles/349661: The supplement exceeds an angle by 122 degrees, Find the supplement1 solutions Answer 249914 by rfer(12660)   on 2010-09-29 11:43:27 (Show Source): You can put this solution on YOUR website!x+x+122=180 2x=58 x=29 degrees x+122=151 degrees
 Angles/349660: If an angle is twice its supplement, find the angle1 solutions Answer 249912 by rfer(12660)   on 2010-09-29 11:41:51 (Show Source): You can put this solution on YOUR website!x+2x=180 3x=180 x=60 degrees 2x=120 degrees
 test/349578: The length of a rectangle is 8 feet shorter than three times the width. The perimeter is 120 feet. Find the length and the width1 solutions Answer 249911 by rfer(12660)   on 2010-09-29 11:41:04 (Show Source): You can put this solution on YOUR website!2w+2(3w-8)=120
 Angles/349656: The supplement of an angle is 36 degrees less than twice the angle. Find the supplement1 solutions Answer 249909 by rfer(12660)   on 2010-09-29 11:35:14 (Show Source): You can put this solution on YOUR website!x+2x-36=180 3x=216 x=72 degrees 2x-36=108 degrees
 Angles/349657: Two angles are supplementary. One angle is three times the size of the other. Find the obtuse angle1 solutions Answer 249908 by rfer(12660)   on 2010-09-29 11:33:24 (Show Source): You can put this solution on YOUR website!x+3x=180 4x=180 x=45 degrees 3x=135 degrees
 Angles/349646: Two angles are supplementary and one angle is 40 degrees less then than other, Find the obtuse angle1 solutions Answer 249906 by rfer(12660)   on 2010-09-29 11:26:07 (Show Source): You can put this solution on YOUR website!x+x+40=180 2x=140 x=70 degrees x+40=110 degrees
 Functions/349315: what is 5x-y=7 in function form1 solutions Answer 249740 by rfer(12660)   on 2010-09-28 18:11:17 (Show Source): You can put this solution on YOUR website!-y=-5x+7 y=5x+7 f(x)=5x+7 f(x) and y are the same thing
 Geometry_proofs/349316: what is x+1/2+3x-5=901 solutions Answer 249739 by rfer(12660)   on 2010-09-28 18:09:49 (Show Source): You can put this solution on YOUR website!4x-4.5=90 4x=94.5 x=23.625 x=23 5/8
 Inequalities/349318: 8+y<-61 solutions Answer 249738 by rfer(12660)   on 2010-09-28 18:07:42 (Show Source): You can put this solution on YOUR website!y<-14
 Systems-of-equations/349328: 3(4-s)-5s=52 wat is the answer 1 solutions Answer 249737 by rfer(12660)   on 2010-09-28 18:06:18 (Show Source): You can put this solution on YOUR website!12-3s-5s=52 -8s=40 s=-5
 Percentage-and-ratio-word-problems/347627: 6. The ratio of boys to girls in third grade is 3 to 7. If there are 15 boys in the class, how many total students are in the third grade? 1 solutions Answer 248492 by rfer(12660)   on 2010-09-24 12:41:22 (Show Source): You can put this solution on YOUR website!15/3=5 7*5=35 girls 3x+7x=50 total
 test/347644: (1/1)(1/1)(1/1)+(1/1)1 solutions Answer 248490 by rfer(12660)   on 2010-09-24 12:36:51 (Show Source): You can put this solution on YOUR website!=2
 Polynomials-and-rational-expressions/347406: a+6a-9=301 solutions Answer 248412 by rfer(12660)   on 2010-09-23 21:18:15 (Show Source): You can put this solution on YOUR website!7a=39 a=5.57
 Finance/347396: Can someone please help me with the Samantha questions I'm in desperate need of solving them before 11:59 pm tonight 9/23/10. Please... 1 solutions Answer 248379 by rfer(12660)   on 2010-09-23 19:55:50 (Show Source): You can put this solution on YOUR website!post the questions
 Miscellaneous_Word_Problems/347343: The sum of three numbers is 107. The second number is 7 more than the first number and the third number is 6 less than twice the second number. Find the numbers.1 solutions Answer 248377 by rfer(12660)   on 2010-09-23 19:54:09 (Show Source): You can put this solution on YOUR website!x+x+7+2(x+7)-6=107 4x+21-6=107 4x=92 x=23 x+7=30 2(x+7)-6=54
 Angles/347318: angle A=(3x+1)degrees. what is its complement?1 solutions Answer 248343 by rfer(12660)   on 2010-09-23 18:02:02 (Show Source): You can put this solution on YOUR website!x+3x+1=90 4x=89 x=22.25 degrees 3x+1=67.75 degrees
 Angles/347321: angle 1 is complementary to angle 3. if angle 3=(x-3)degrees and angle 1=(3x)degrees, how large is each angle? 1 solutions Answer 248341 by rfer(12660)   on 2010-09-23 17:58:19 (Show Source): You can put this solution on YOUR website!3x+x-3=90 4x=93 x=23.25 degrees 3x=69.75 degrees x-3=20.25 degrees
 Linear-equations/347319: what is the slope of x-2y=61 solutions Answer 248339 by rfer(12660)   on 2010-09-23 17:55:55 (Show Source): You can put this solution on YOUR website!-2y=-x+6 y=1/2x-3 slope m=1/2
 Equations/347301: what is m=37 for 23+m=601 solutions Answer 248337 by rfer(12660)   on 2010-09-23 17:54:18 (Show Source): You can put this solution on YOUR website!23+37=60
 Linear-equations/347316: slope-intercept form: y – 4x – 3 = -2x - 2 After you solve the problem can you please give me the numbers so I can place them on a x y graph. Thanks !1 solutions Answer 248334 by rfer(12660)   on 2010-09-23 17:49:06 (Show Source): You can put this solution on YOUR website!y=2x-1 y int=-1 (0,-1) slope m=2 2/1 two up one right from (0,-1)
 Angles/347303: The ratio of the measures of the angles of a triangle is 3 : 7 : 2. What are the angle measures?1 solutions Answer 248332 by rfer(12660)   on 2010-09-23 17:46:14 (Show Source): You can put this solution on YOUR website!3x+7x+2x=180 12x=180 x=15 3x=45 degrees 7x=105 degrees 2x=30 degrees
 Circles/347210: What is the radius of a circle with a circumference of 62.8 meters?1 solutions Answer 248319 by rfer(12660)   on 2010-09-23 16:56:25 (Show Source): You can put this solution on YOUR website!(62.8/3.14)/2=10 meters
 Numeric_Fractions/347284: 2/3 x 9 Can you help me with this please ?1 solutions Answer 248317 by rfer(12660)   on 2010-09-23 16:53:18 (Show Source): You can put this solution on YOUR website!2/3*9=18/3=6
 Equations/347275: please solve my problem: 4x-(9-3x)=8x-11 solutions Answer 248316 by rfer(12660)   on 2010-09-23 16:52:29 (Show Source): You can put this solution on YOUR website!4x-9+3x=8x-1 -8=x
 Equations/347280: 4x-2=3x=41 solutions Answer 248314 by rfer(12660)   on 2010-09-23 16:50:35 (Show Source): You can put this solution on YOUR website!x=6