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# Recent problems solved by 'rfer'

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 Quadratic_Equations/479701: how do I do this quadratic equation into standard form lesae help fast please. x^2-10x-6=2x+31 solutions Answer 328659 by rfer(12662)   on 2011-08-09 12:09:45 (Show Source): You can put this solution on YOUR website!x^2-12x-9
 Exponential-and-logarithmic-functions/479387: how to show substitution 5n+3;n=-21 solutions Answer 328455 by rfer(12662)   on 2011-08-08 17:44:31 (Show Source): You can put this solution on YOUR website!5(-2)+3 -10+3=-7
 expressions/479329: how do you evaluate this epression (-2 1/2)-2/7-(-1 1/8)1 solutions Answer 328454 by rfer(12662)   on 2011-08-08 17:43:20 (Show Source): You can put this solution on YOUR website!-5/2-2/7+9/8 -140/56-16/56+63/56=-93/56=-1 37/56
 test/479345: 42/2•(12+9)=1 solutions Answer 328452 by rfer(12662)   on 2011-08-08 17:39:02 (Show Source): You can put this solution on YOUR website!42/2*21=882/2=441
 Numeric_Fractions/479363: what is the difference of - 5 over 3 and 1/2?1 solutions Answer 328451 by rfer(12662)   on 2011-08-08 17:37:40 (Show Source): You can put this solution on YOUR website!-5/3+1/2= -10/6+3/6=-7/6=-1 1/6
 Equations/479384: +46--61--2+-14--82 Need to confirm answer to see if I am completing the problem correctly. Answer received is 1131 solutions Answer 328450 by rfer(12662)   on 2011-08-08 17:35:31 (Show Source): You can put this solution on YOUR website!+46+61+2-14+82=177
 Graphs/479379: Finding the equation of a line given the following points: (-2,-5) (-8,-6)1 solutions Answer 328448 by rfer(12662)   on 2011-08-08 17:33:27 (Show Source): You can put this solution on YOUR website!m=(-6--5)/(-8--2) m=-1/-6 m=1/6 --------- -6=1/6(-8)+b -6=-8/6+b -6+8/6=b -36/6+8/6=b -28/6=b -4.7=b ---------------- y=1/6x-4.7
 Numeric_Fractions/479026: what is 7/15 as a percent?1 solutions Answer 328242 by rfer(12662)   on 2011-08-07 20:44:27 (Show Source): You can put this solution on YOUR website!7/15=0.467=46.7%
 Finance/479031: Find the simple interest for \$42,368 at 5.25% annually for 5 months1 solutions Answer 328241 by rfer(12662)   on 2011-08-07 20:43:24 (Show Source): You can put this solution on YOUR website!I=Prt I=42368*0.0525*5/12 I=\$926.80
 Finance/479034: Find the amount of interest earned for a deposit of \$24,677.23 at 9.72% compounded monthly for 32 months.1 solutions Answer 328240 by rfer(12662)   on 2011-08-07 20:41:08 (Show Source): You can put this solution on YOUR website!A=24677.23(1+0.0972/12)^32 A=24677.23(1.0081)^32 A=24677.23*1.29454 A=31945.67 ------------- 31945.67-24677.23=\$7,268.44 interest earned
 Money_Word_Problems/478968: 2 Isabel is a saleswoman. She is paid a base salary of \$1300 a month plus a 3% commission on the sales she makes. What was her sales amount last month if she earned a total of \$1773.67 ?1 solutions Answer 328211 by rfer(12662)   on 2011-08-07 19:22:44 (Show Source): You can put this solution on YOUR website!1773.67-1300=473.67 473.67/0.03=\$15,789
 Volume/478989: can you help me? the following angles are complementary angles. determine the measure of angle 1, and angle 2. show all work. angle 2, is x angle 1, is 5x+61 solutions Answer 328209 by rfer(12662)   on 2011-08-07 19:20:23 (Show Source): You can put this solution on YOUR website!x+5x+6=90 6x=90-6 6x=84 x=14 5x+6=76
 Evaluation_Word_Problems/478979: in a right triangle find the length of the side not given b=1, c= sqrt 51 solutions Answer 328207 by rfer(12662)   on 2011-08-07 19:18:01 (Show Source): You can put this solution on YOUR website!5-1=4 sqrt 4=2
 Average/478927: Divide (28x^3-51x^2-41x-6)/(7x+3)1 solutions Answer 328156 by rfer(12662)   on 2011-08-07 16:44:15 (Show Source): You can put this solution on YOUR website!=4x^2-9x-2 R=0
 Quadratic_Equations/478910: x+3y=9 graph using slope and y intercept1 solutions Answer 328155 by rfer(12662)   on 2011-08-07 16:40:22 (Show Source): You can put this solution on YOUR website!x+3y=9 3y=-x+9 y=-1/3x+3 slope m=-1/3 y int b=3 (0,3)
 Quadratic_Equations/478911: find the slope intercept equation slope 9 Y intercept 0,51 solutions Answer 328154 by rfer(12662)   on 2011-08-07 16:34:01 (Show Source): You can put this solution on YOUR website!y=9x+5
 Circles/478890: if the radius of a wheel is f feet, how many revolutions does the wheel make per mile? (1 mile = 5,280feet)1 solutions Answer 328152 by rfer(12662)   on 2011-08-07 16:30:42 (Show Source):
 Numbers_Word_Problems/478913: Provide a legend, equation, solution and conclusion for the following question: Find three consecutive even integers whose sum is 114. 1 solutions Answer 328149 by rfer(12662)   on 2011-08-07 16:27:39 (Show Source): You can put this solution on YOUR website!first x second x+2 third x+4 ---------------- x+x+2+x+4=114 3x=114-6 3x=108 x=36 x+2=38 x+4=40
 Surface-area/478733: . How many cubic inches of air can a fully inflated basketball hold if its radius is 5 inches? Give solution accurate to the nearest hundredth. Include correct units with your solution.1 solutions Answer 328089 by rfer(12662)   on 2011-08-07 12:24:37 (Show Source): You can put this solution on YOUR website!V=4/3pir^3 V=4/3*3.14*5^3 V=523.33 cu in
 Travel_Word_Problems/478740: A car used 7 gallons of gasoline to go a distance of 210 miles. At that rate, how much gasoline would the car use to go 495 miles?1 solutions Answer 328086 by rfer(12662)   on 2011-08-07 12:20:33 (Show Source): You can put this solution on YOUR website!7/120=x/495 120x=3465 x=28.9 gal
 Percentage-and-ratio-word-problems/478829: If I sold a t-shirt for 24\$ what would be total including sales tax of 6%1 solutions Answer 328082 by rfer(12662)   on 2011-08-07 12:14:16 (Show Source): You can put this solution on YOUR website!24*1.06=\$25.44
 Money_Word_Problems/478765: Nangula wishes to invest 5000 pounds for 10 years. three banks offer different terms for the investment. Bank A pays simple interest of 6% per annum. Bank B pays interest of 5% compounded per annum. Bank C pays compound interest of 4%, but paid on a 6 monthly basis. Calculate how much the investment will be worth for each bank at the end of 10 years. 1 solutions Answer 328081 by rfer(12662)   on 2011-08-07 12:13:22 (Show Source): You can put this solution on YOUR website!Bank A I=prt I=5000*0.06*10 I=3000 ------------- 5000+3000=8000 -------------- Bank B A=5000(1.05)^10 A=5000*1.628895 A=8144.48 -------------- Bank C A=5000(1+0.04/2)^(10*2) A=5000(1.02)^20 A=5000*1.48595 A=7429.75
 Inequalities/478820: -2.5y + y > -8 + 181 solutions Answer 328078 by rfer(12662)   on 2011-08-07 12:03:38 (Show Source): You can put this solution on YOUR website!-1.5y > 10 y < 6.67
 Numeric_Fractions/478643: 6 2/5 - 4 7/10 in lowest terms 1 solutions Answer 327979 by rfer(12662)   on 2011-08-06 22:28:27 (Show Source): You can put this solution on YOUR website!64/10-47/10=17/10=1 7/10
 Linear-equations/478687: Write the equation of each line that has the indicated slope, m, and y intercept, b. Express final equations in slope-intercept form. Show all work. m = -3, b = -4.1 solutions Answer 327978 by rfer(12662)   on 2011-08-06 22:26:04 (Show Source): You can put this solution on YOUR website!y=-3x-4
 Signed-numbers/478453: (+4)+(-8)+(+2)+(-3)1 solutions Answer 327877 by rfer(12662)   on 2011-08-06 12:03:27 (Show Source): You can put this solution on YOUR website!+4-8+2-3=-5
 Proportions/478482: Ratio of lemon to water to be mixed to prepare lemon juice is 3:5.For 12 lemons the number of cups of water to be used is 1 solutions Answer 327876 by rfer(12662)   on 2011-08-06 12:01:53 (Show Source): You can put this solution on YOUR website!3/12=5/x 3x=60 x=20
 Miscellaneous_Word_Problems/478518: Wht % of55 is 34 thn round to nearest 10th or 10th Of a %1 solutions Answer 327875 by rfer(12662)   on 2011-08-06 11:59:22 (Show Source): You can put this solution on YOUR website!34/55=0.618=61.8%
 expressions/478381: 16+4x(7+8)-31 solutions Answer 327770 by rfer(12662)   on 2011-08-05 20:56:16 (Show Source): You can put this solution on YOUR website!60x+13
 Square-cubic-other-roots/478296: The square root of 3.24 + (.o5)^21 solutions Answer 327757 by rfer(12662)   on 2011-08-05 19:56:01 (Show Source): You can put this solution on YOUR website!1.8+0.0025=1.8025
 Miscellaneous_Word_Problems/476169: Write in symbols: A number increased by by 31 solutions Answer 326536 by rfer(12662)   on 2011-07-30 22:10:14 (Show Source): You can put this solution on YOUR website!x+3