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Recent problems solved by 'rfer'

rfer answered: 12726 problems
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Graphs/373303: Why is the line x=4 a vertical line 1 solutions Answer 265745 by rfer(12730)   on 2010-11-18 17:22:26 (Show Source): You can put this solution on YOUR website!

Graphs/373198: You are planning to spend no less than $6,000 and no more than $10,000 on your landscaping project. a. Write an inequality that demonstrates how much money you will are willing to spend on the project. 1 solutions Answer 265723 by rfer(12730)   on 2010-11-18 16:25:07 (Show Source): You can put this solution on YOUR website! 6000=< x =<10000

Linear-equations/373273: Can someone please help me solve? Find the slope and the y-intercept of the line 9x=4y+24 the slope is___? The y-intercept is (0, ___) 1 solutions Answer 265721 by rfer(12730)   on 2010-11-18 16:23:09 (Show Source): You can put this solution on YOUR website! put in y int form first 4y=9x-24 y=2.25x-6 slope m=2.25 y int =-6 (0,-6)

Linear-systems/373274: (-3,___) is a solution of y = 4-3x 1 solutions Answer 265718 by rfer(12730)   on 2010-11-18 16:19:51 (Show Source): You can put this solution on YOUR website! (-3,13)

Linear-equations/373194: Hello, I think I got it, just wanted to check. solve graphically y=2x-6 and y=-2x + 10. write down the coordinates of the point of intersection of the two lines. I got (2,4). Please let me know. thank you 1 solutions Answer 265717 by rfer(12730)   on 2010-11-18 16:18:27 (Show Source): You can put this solution on YOUR website! you have thr right number, but have them reversed. x=4 y=2 (4,2) check my work Bob

expressions/373220: My friend is having trouble with this problem. She needs to see how it is worked out with the answer. [6.2-(0.4-5)][-3.02-(5-4.2) 1 solutions Answer 265713 by rfer(12730)   on 2010-11-18 16:07:28 (Show Source): You can put this solution on YOUR website! (6.2-.45)(-3.82) 5.75*-3.82=21.97

Triangles/373261: the angle measures of a triangle are x, 2x, and 12x what does each angle measures 1 solutions Answer 265709 by rfer(12730)   on 2010-11-18 16:00:59 (Show Source): You can put this solution on YOUR website! x+2x+12x=180 15x=180 x=12 2x=24 12x=144

Radicals/373250: How do I workout this problem? The diagonal of a square measures 10 inches. What is the lenght of the sides? 1 solutions Answer 265706 by rfer(12730)   on 2010-11-18 15:59:37 (Show Source): You can put this solution on YOUR website! x^2+x^2=100 2x^2=100 x^2=50 x=5 in

Radicals/373252: I need to solve; 3x² + 5 = 11 1 solutions Answer 265702 by rfer(12730)   on 2010-11-18 15:57:02 (Show Source): You can put this solution on YOUR website! 3x^2+5=11 3x^2=6 x^2=2 sqrt 2=1.14142

Exponents/373258: (2a-b)^3 if a=3, and b=-2 ive worked on it, and i think i got it? but i could have done it wrong too.. i got (2(3)-(-2))^3 (6-2)^3 (4)^3 64. right? 1 solutions Answer 265699 by rfer(12730)   on 2010-11-18 15:54:31 (Show Source): You can put this solution on YOUR website! Ok a minus times a minus is a plus look at it like this (2*3)-1*-2 so we get (6+2)^3 8^3=512

Miscellaneous_Word_Problems/373023: Calculate the answer [-12 + (-18](-16 +-4) 1 solutions Answer 265603 by rfer(12730)   on 2010-11-18 00:23:32 (Show Source): You can put this solution on YOUR website! -30*-20=600

Rational-functions/373033: what is the cubed root of 1/7 1 solutions Answer 265602 by rfer(12730)   on 2010-11-18 00:20:05 (Show Source): You can put this solution on YOUR website! 0.52276

Rational-functions/373037: what is the cubed root of 5 times the cubed root of 5? 1 solutions Answer 265601 by rfer(12730)   on 2010-11-18 00:15:30 (Show Source): You can put this solution on YOUR website! curt 25=2.924

Inverses/372838: how do you solve this equation: 15m = 300 1 solutions Answer 265558 by rfer(12730)   on 2010-11-17 20:08:02 (Show Source): You can put this solution on YOUR website! m=300/15 m=20

Angles/372878: FIND THE MEASURE OF AN ANGLE WHOSE SUPPLEMENT IS 6 TIMES ITS COMPLIMENT 1 solutions Answer 265553 by rfer(12730)   on 2010-11-17 20:01:45 (Show Source): You can put this solution on YOUR website! x+6x=90 7x=90 x=12.8 180-6(12.86)=103.2 degrees

Equations/372881: The length of a couch is 200 centimeters.This is 16 centimeters less than 3 times the width of a matching chair. how wide is the chair? 1 solutions Answer 265551 by rfer(12730)   on 2010-11-17 19:56:30 (Show Source): You can put this solution on YOUR website! 3x-16=200 3x=216 x=72

Travel_Word_Problems/372877: how many hours and minutes will it take me to get 174 miles going 52 mph? 1 solutions Answer 265550 by rfer(12730)   on 2010-11-17 19:54:20 (Show Source): You can put this solution on YOUR website! 174/52=3.35 hrs=3 hrs 21 min

Linear-equations/372847: what is the slope if f(6)=-1, f(3)=8 1 solutions Answer 265549 by rfer(12730)   on 2010-11-17 19:52:57 (Show Source): You can put this solution on YOUR website! (6,-1) (3,8) slope m=-9/4

Inequalities/372871: Please help me solve this equation: -6(4r+7)-7r<51 1 solutions Answer 265544 by rfer(12730)   on 2010-11-17 19:48:39 (Show Source): You can put this solution on YOUR website! -24r-42-7r < 51 -31r < 93 r > -3

Graphs/372852: through:(-1,4), slope=-4 1 solutions Answer 265542 by rfer(12730)   on 2010-11-17 19:46:08 (Show Source): You can put this solution on YOUR website! y=-4x

Graphs/372831: how to work out this problem 7-7(x-7)>-4+5x 1 solutions Answer 265531 by rfer(12730)   on 2010-11-17 19:11:01 (Show Source): You can put this solution on YOUR website! 7-7x+49 > -4+5x -12x > -60 x < 5

Numeric_Fractions/372810: 3/11 x 1/3+ 10/11 X 3/20 1 solutions Answer 265525 by rfer(12730)   on 2010-11-17 18:36:03 (Show Source): You can put this solution on YOUR website! 3/33+30/220= 3/33+3/22 66/726+99/726=165/726=27/121

Linear-equations/372811: How to find the slope of y=-4x+12? 1 solutions Answer 265523 by rfer(12730)   on 2010-11-17 18:32:15 (Show Source): You can put this solution on YOUR website! y=mx+b m=slope=-4 or -4/1 same thing

Equations/372773: x=4y+45 Solve the system using the substitution methon 2y+x=-9 1 solutions Answer 265521 by rfer(12730)   on 2010-11-17 18:30:03 (Show Source): You can put this solution on YOUR website! 2y+4y+45=-9 6y=-54 y=-9 ------------------------------- x=4*-9+45 x=-36+45 x=9 ------------------ 2*-9+9=-9 -18=-18

percentage/372733: the sneaked store at the mall is having a sale. sneakers that sell $68.00 have a discount of 25%. if you buy them on wednesday you get an additional $5.00. what percent is the total discount if you buy on wednesday? 1 solutions Answer 265467 by rfer(12730)   on 2010-11-17 15:52:47 (Show Source): You can put this solution on YOUR website! 68*.75=51 51-5=46 46/68=0.676 1.00-0.676=0.324=32.4%

test/372593: What is p/3=3 1/4 1 solutions Answer 265400 by rfer(12730)   on 2010-11-17 13:36:53 (Show Source): You can put this solution on YOUR website! p=13/4*3 p=39/4 p=9 3/4

Numeric_Fractions/372605: 1/2 + (2/3 divide 3/4) minus (4/5 times 5/6) = 1 solutions Answer 265399 by rfer(12730)   on 2010-11-17 13:33:39 (Show Source): You can put this solution on YOUR website! 1/2+2/3*4/3-4/5*5/6 1/2+8/9-20/30 45/90+80/90-60/90=65/90=13/18

Probability-and-statistics/372655: If the probability of rain for the day is 65% , what are the odds agianst rain? 1 solutions Answer 265395 by rfer(12730)   on 2010-11-17 13:26:26 (Show Source): You can put this solution on YOUR website! 35%

Geometry_Word_Problems/372632: What is the answer if the question is... Solve the following word problem by setting up and solving an algebraic equation. Find the measures of the three angles of a triangle if the largest is 2(degrees) less than three times the smallest, and the other angle is 12(degrees) larger than the smallest. 1 solutions Answer 265393 by rfer(12730)   on 2010-11-17 13:25:36 (Show Source): You can put this solution on YOUR website! x+(3x-2)+(x+12)=180 5x=170 x=34 degrees 3x-2=100 degrees x+12=46 degrees

test/372639: 683÷8 1 solutions Answer 265392 by rfer(12730)   on 2010-11-17 13:22:20 (Show Source): You can put this solution on YOUR website! 85.375

Percentage-and-ratio-word-problems/372324: Carolyn borrowed $125. If the interest rate is 1.5% per moth on the unpaid balance and she does not pay this debt for 1 year, how much interest will she owe at the end of the year? 1 solutions Answer 265231 by rfer(12730)   on 2010-11-16 21:15:59 (Show Source): You can put this solution on YOUR website! I=125*0.015*12 I=22.50