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rfer answered: 12658 problems
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Equations/511919: what is the step to solve -(-12)+(-11)-6-4-(-3) 1 solutions Answer 342445 by rfer(12662)   on 2011-10-09 16:59:20 (Show Source): You can put this solution on YOUR website! use the order of operations +12-11-10+3=-6

percentage/511797: Ned Conducted a survey with his classmates to find their preferences about three kinds of icecream. The circle graph below shows the results of his survey. -25 percent (vanilla) -33 percent (chocolate) -20 percent (strawberry) -22 percent (other) If 25 students prefer strawberry icecream, how many students are in Ned's class? 1 solutions Answer 342422 by rfer(12662)   on 2011-10-09 14:37:36 (Show Source): You can put this solution on YOUR website! 25/0.20=125 students

test/511755: 4x2/5 1 solutions Answer 342420 by rfer(12662)   on 2011-10-09 14:34:03 (Show Source): You can put this solution on YOUR website! 4/1*2/5=8/5=1 3/5

Percentage-and-ratio-word-problems/511564: Whats the percent of 9 17/50 1 solutions Answer 342282 by rfer(12662)   on 2011-10-08 19:33:36 (Show Source): You can put this solution on YOUR website! (17/50)/(9/1)= 17/50*1/9=17/450=0.0378=3.78%

Numeric_Fractions/511489: y=1/4(-8)-3 1 solutions Answer 342268 by rfer(12662)   on 2011-10-08 17:29:50 (Show Source): You can put this solution on YOUR website! y=-8/4-3 y=-2-3 y=-5

Expressions-with-variables/511557: 10 total batteries used 6 volt and 12 volt batteries hooked in a series equal 84 volts. how many of each type of battery is used? 1 solutions Answer 342266 by rfer(12662)   on 2011-10-08 17:26:59 (Show Source): You can put this solution on YOUR website! s+t=10 t=10-s -------------- 6s+12t=84 6s+12(10-s)=84 6s+120-12s=84 -6s=84-120 -6s=-36 s=6 six volt batteries t=10-6=4 tewelve volt batteries ------------------------------- 6*6+12*4=84 36+48=84

Exponents-negative-and-fractional/511271: 17/51 1 solutions Answer 342126 by rfer(12662)   on 2011-10-07 22:01:04 (Show Source): You can put this solution on YOUR website! =1/3

absolute-value/511288: what is the solution set x -6= 8 1 solutions Answer 342124 by rfer(12662)   on 2011-10-07 21:59:54 (Show Source): You can put this solution on YOUR website! x=14

Travel_Word_Problems/511323: how long would it take to run a mile if you were travelling at a constant speed of 10 miles per hour? 1 solutions Answer 342123 by rfer(12662)   on 2011-10-07 21:57:41 (Show Source): You can put this solution on YOUR website! 60/10=6 minutes

Polynomials-and-rational-expressions/511154: solve using addition and multiplication principle 2 + 7x < 23 1 solutions Answer 342084 by rfer(12662)   on 2011-10-07 17:54:24 (Show Source): You can put this solution on YOUR website! 7x < 23-2 7x < 21 x < 21/7 x < 3

Human-and-algebraic-language/511179: twenty is 22 less than six time a certain number? 1 solutions Answer 342082 by rfer(12662)   on 2011-10-07 17:52:44 (Show Source): You can put this solution on YOUR website! 20=6x-22 44=6x 44/6=x x=7.33

Angles/511182: x+2x=180 1 solutions Answer 342080 by rfer(12662)   on 2011-10-07 17:50:48 (Show Source): You can put this solution on YOUR website! 3x=180 x=180/3 x=60

Inequalities/511186: what is this question. 7w is greater than or equal to -51?? 1 solutions Answer 342079 by rfer(12662)   on 2011-10-07 17:49:02 (Show Source): You can put this solution on YOUR website! 7w >= -51 w >= -51/7 w >= -7.28

percentage/511221: What is the percentage of 375 over 1000 1 solutions Answer 342077 by rfer(12662)   on 2011-10-07 17:46:00 (Show Source): You can put this solution on YOUR website! 375/1000=.375=37.5%

Angles/511244: Angle A is half as large as it's complement angle B. Find the measurement of each angle 1 solutions Answer 342076 by rfer(12662)   on 2011-10-07 17:43:49 (Show Source): You can put this solution on YOUR website! x+2x=90 3x=90 x=90/3 x=30 2x=60

Equations/511248: 4p+6 if p=1 1/2 1 solutions Answer 342075 by rfer(12662)   on 2011-10-07 17:42:50 (Show Source): You can put this solution on YOUR website! 4*1.5+6=12

Angles/510908: the ? is: the measure of one angle is three times the measure of its complement. find the measure of each angle and this is all they give you. 1 solutions Answer 341969 by rfer(12662)   on 2011-10-06 23:15:31 (Show Source): You can put this solution on YOUR website! x+3x=90 4x=90 x=22.5 3x=67.5

Numbers_Word_Problems/510989: three more than twice a certain number is seven less than three times the number. find the number 1 solutions Answer 341967 by rfer(12662)   on 2011-10-06 23:12:17 (Show Source): You can put this solution on YOUR website! 2x+3=3x-7 2x-3x=-7-3 -x=-10 x=+10

Money_Word_Problems/510987: Co. made an adjusting entry accruing interest for $800 on a note payable for the month of January. The note required 12% per annum on the principal. The principal amount of the note payable must have been 1 solutions Answer 341966 by rfer(12662)   on 2011-10-06 23:10:27 (Show Source): You can put this solution on YOUR website! 0.12/12=0.01 800/0.01=$80,000

Circles/510913: 1 solutions Answer 341965 by rfer(12662)   on 2011-10-06 23:08:21 (Show Source): You can put this solution on YOUR website! 3k-33 > 12 3k > 12+33 3k > 45 k > 45/3 k > 15

Finance/510950: Find the slope of the line between (-4,5)and(7,8) im confused how to find the slope 1 solutions Answer 341963 by rfer(12662)   on 2011-10-06 23:06:14 (Show Source): You can put this solution on YOUR website! slope m=(y1-y2)/(x1-x2) m=(8-5)/(7--4) m=3/11

Linear-equations/510954: Find the slope of the line passing through the points (4,8) and (8,7). 1 solutions Answer 341961 by rfer(12662)   on 2011-10-06 23:03:22 (Show Source): You can put this solution on YOUR website! slope m m=(7-8)/(8-4) m=-1/4 ---------------- y=mx+b 7=-1/4*8+b 7=-2+b 7+2=b b=9 ------------ y=-1/4x+9

Linear-equations/510961: What slope-intercept equation represents a line that passes through the point (1,-5) and is parallel to the line y=-4x-5? 1 solutions Answer 341960 by rfer(12662)   on 2011-10-06 23:00:21 (Show Source): You can put this solution on YOUR website! -5=-4*1+b -5=-4+b -5+4=b b=-1 ------- y=-4x-1

Equations/510976: (3p-4)=31 1 solutions Answer 341959 by rfer(12662)   on 2011-10-06 22:58:47 (Show Source): You can put this solution on YOUR website! 3p-4=31 3p=31+4 3p=35 p=35/3 p=11.7

Travel_Word_Problems/510982: Could you please help me solve this: Paula leaves home driving 40 miles per hour. One hour later, her brother Dan leaves home, driving in the same direction as his sister at a speed of 50 miles per hour. How long does it take Dan to catch up to Paula? If you could please show all work so that I can understand. Thank you so much I need thhis as soon as possible. 1 solutions Answer 341957 by rfer(12662)   on 2011-10-06 22:57:15 (Show Source): You can put this solution on YOUR website! 40 mi lead overtake speed 50-40=10 mph 40/10=4 hrs

Equations/510966: -5(x-3)=-25 1 solutions Answer 341956 by rfer(12662)   on 2011-10-06 22:55:19 (Show Source): You can put this solution on YOUR website! -5x+15=-25 -5x=-15-25 -5x=-40 x=-40/-5 x=+8

Polygons/510901: write an equation for the line parallel to y=5x+4 passinng throught the origin 1 solutions Answer 341910 by rfer(12662)   on 2011-10-06 21:09:48 (Show Source): You can put this solution on YOUR website! y=5x

Inequalities/510846: 28=3m-7m 1 solutions Answer 341908 by rfer(12662)   on 2011-10-06 21:08:55 (Show Source): You can put this solution on YOUR website! 28=-4m 28/-4=m -7=m

Inequalities/510898: I am having trouble with a homework problem and cannot figure it out. Could someone please help me to understand?? Thanks so much in advance. 4m over 5 < -3 over 15. 1 solutions Answer 341906 by rfer(12662)   on 2011-10-06 21:04:05 (Show Source): You can put this solution on YOUR website! 4m/5 < -3/15 4m*15 < 5*-3 60m < -15 m < -15/60 m < -1/4

test/510896: of 34 12 student have siblings what is the percentage of the students that have siblings 1 solutions Answer 341904 by rfer(12662)   on 2011-10-06 21:01:27 (Show Source): You can put this solution on YOUR website! 12/34=0.35=35%

Age_Word_Problems/510895: How old am I if 400 reduced by 3 times my age is 223 1 solutions Answer 341903 by rfer(12662)   on 2011-10-06 21:00:14 (Show Source): You can put this solution on YOUR website! 400-223=177 177/3=59 yrs