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# Recent problems solved by 'rfer'

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 Travel_Word_Problems/333791: How fast must you travel in a car to go 84 miles in 56 minutes?1 solutions Answer 239211 by rfer(12657)   on 2010-08-22 15:10:10 (Show Source): You can put this solution on YOUR website!84/56*60=90 mph
 Exponents/333804: The exponent in the product is the ________ of the exponents of the two factors. 1 solutions Answer 239208 by rfer(12657)   on 2010-08-22 15:05:50 (Show Source): You can put this solution on YOUR website!sum
 test/333805: Could you please help me solve this problem that I am learning how to do in my algebra class. Multiply (x -8/7) (x + 7/8) Thanks1 solutions Answer 239207 by rfer(12657)   on 2010-08-22 15:05:01 (Show Source): You can put this solution on YOUR website!(x-8/7)(x+7/8) x^2+7/8x-8/7x-56/56 combinr like terms, find common denomiator, reduce x^2+49/56-64/56-1 x^2-15/56x-1
 Equations/333808: Write an equation based on the sentence: A number x is five more than two times x minus three. Solve for the value of x and show work. 1 solutions Answer 239205 by rfer(12657)   on 2010-08-22 14:58:41 (Show Source): You can put this solution on YOUR website!x+5=2x-3 x=8 ------------- 8+5=2*8-3
 Polynomials-and-rational-expressions/333830: what does it mean to refer to a 20 inch tv set or a 25 inch tv set? such units refer to the diagonal of the screen. a 10 inch set also has a width of 8 inches. what is its height?1 solutions Answer 239204 by rfer(12657)   on 2010-08-22 14:55:17 (Show Source): You can put this solution on YOUR website!100-64=36 sq rt 36=6 in
 Rectangles/333855: Find the perimeter of a square whose area is 144 inches square?1 solutions Answer 239203 by rfer(12657)   on 2010-08-22 14:53:33 (Show Source): You can put this solution on YOUR website!12*12=144 2*12+2*12=48 in
 Equations/333820: simplify. 1/3x = -x-61 solutions Answer 239202 by rfer(12657)   on 2010-08-22 14:52:30 (Show Source): You can put this solution on YOUR website!1 1/3x=-6 x=-6/1*3/4 x=-18/4 x=-4 1/2
 Expressions-with-variables/333823: Graph the lines How to find the ordered pairs? 2x + 4y = 161 solutions Answer 239201 by rfer(12657)   on 2010-08-22 14:50:43 (Show Source): You can put this solution on YOUR website!easy to find the intercepts (0,4) (8,0)
 Geometric_formulas/333831: 7/4q-2=(-5)or the fraction seven over four times q minus two equals negative five. So, what does q equal?1 solutions Answer 239200 by rfer(12657)   on 2010-08-22 14:49:11 (Show Source): You can put this solution on YOUR website!7/4q-2=-5 7/4q=-3 q=-3/1*4/7 q=12/7 q=1 5/7
 Equations/333824: im trying to write an equation to this My mother, daughter and I went shopping and I purchased 3 of the same shirts for us to wear for a family photo session that cost \$24 each. My mother got her last name airbrushed on the back and her first name on the front of her shirt for an extra cost per airbrushed named. She promised to pay me back for the extra cost of airbrushing. When I got home I realized I had misplaced my receipt. I remember spending \$86 total. How much does my mother owe me for the airbrushing1 solutions Answer 239199 by rfer(12657)   on 2010-08-22 14:44:39 (Show Source): You can put this solution on YOUR website!\$14
 Travel_Word_Problems/333833: Any help is appreciated: A black racer snake travels 39.1 km in 17 hours. What is the speed in km/h?1 solutions Answer 239198 by rfer(12657)   on 2010-08-22 14:42:21 (Show Source): You can put this solution on YOUR website!39.1/17=2.3 km/h
 expressions/333841: Solve: 3> 4+u/-5 1 solutions Answer 239197 by rfer(12657)   on 2010-08-22 14:40:34 (Show Source): You can put this solution on YOUR website!3>4+u/-5 -1>u/-5 5>u
 Travel_Word_Problems/333834: Please help: A particular hybrid car travels approximately 176 miles on 4 gallons of gas. Find the amount of gas required for a 572 mile trip.1 solutions Answer 239196 by rfer(12657)   on 2010-08-22 14:38:34 (Show Source): You can put this solution on YOUR website!4/176=x/572 176x=2288 x=13 gal
 Equations/333839: Simplify completely: (5/6 ÷ 5/3)+ 3/7 This is how I started off.. 5/6 x 3/5= 15/30 ? Thanks for helping! 1 solutions Answer 239195 by rfer(12657)   on 2010-08-22 14:36:51 (Show Source): You can put this solution on YOUR website!5/6*3/5+3/7 15/30+3/7 1/2+3/7 7/14+6/14=13/14
 Linear-systems/333676: 4x-y-2=0 write in slope intercept form.and sketch the line1 solutions Answer 239133 by rfer(12657)   on 2010-08-21 22:57:21 (Show Source): You can put this solution on YOUR website!4x-y-2=0 -y=-4x+2 y=4x-2
 Equations/333682: 2/3(X-2)-1=1/4(x-3)1 solutions Answer 239131 by rfer(12657)   on 2010-08-21 22:56:04 (Show Source): You can put this solution on YOUR website!2/3x-4/3-1=1/4x-3/4 8/12x-3/12x=1/3 5/12x=4/12 x=4/12*12/5 x=48/60 x=4/5
 Geometry_Word_Problems/333678: a can of paint will cover 70 square feet. how many cans of paint are needed to paint a wall 5 feet high and 98 feet long?1 solutions Answer 239130 by rfer(12657)   on 2010-08-21 22:52:25 (Show Source): You can put this solution on YOUR website!(5*98)/70=7 gal
 Coordinate-system/333691: Determine the x- and y- intercept of y= 3/2x - 2 1 solutions Answer 239128 by rfer(12657)   on 2010-08-21 22:50:44 (Show Source): You can put this solution on YOUR website!y int b=-2 (0,-2) x int = (4/3,0)
 Geometry_Word_Problems/333714: The width of a rectangle is four feet more than one-third of its length. The perimeter is 64 feet. What are the length and the width?1 solutions Answer 239127 by rfer(12657)   on 2010-08-21 22:47:32 (Show Source): You can put this solution on YOUR website!2(1/3x+4)+2x=64 2/3x+8+2x=64 8/3x=56 x=56/1*3/8 x=168/8 x=21 1/3x+4=11
 Linear-equations/333693: Complete the ordered pair (-2, ? ) so that it is a solution to the linear equation y = -5x - 41 solutions Answer 239125 by rfer(12657)   on 2010-08-21 22:43:00 (Show Source): You can put this solution on YOUR website!y=-5*-2-4 y=10-4 y=6 (-2,6)
 Triangles/333532: What is the largest possible perimeter of an isosceles triangle with a vertex angle of 60°, if all of its sides are integers and no side is longer than 20? 1 solutions Answer 239079 by rfer(12657)   on 2010-08-21 17:42:22 (Show Source): You can put this solution on YOUR website!60
 Money_Word_Problems/333549: A grocery store is having a sale on bananas: 25 cents per pound. They lose 11 cents per pound by having this sale (it costs them 36 cents per pound to buy them). How many pounds of bananas did they sell if they lost \$123.20 in total?1 solutions Answer 239077 by rfer(12657)   on 2010-08-21 17:39:22 (Show Source): You can put this solution on YOUR website!123.20/.11=1120 lbs
 Triangles/333586: Determine the length of the leg of a 45o – 45o – 90o triangle with a hypotenuse length of 15 inches1 solutions Answer 239063 by rfer(12657)   on 2010-08-21 16:41:24 (Show Source): You can put this solution on YOUR website!each leg 10.6 in
 Graphs/333588: write an equation of a line with given slope -2/3 and given y intercept (0,5), leave answer in slope intercept form1 solutions Answer 239057 by rfer(12657)   on 2010-08-21 15:49:30 (Show Source): You can put this solution on YOUR website!y=-2/3x+5
 Graphs/333596: What is the slope m and y-intercept point of the line 3x – y = –2?1 solutions Answer 239056 by rfer(12657)   on 2010-08-21 15:46:43 (Show Source): You can put this solution on YOUR website!3x-y=-2 -y=-3x-2 y=3x+2 slope m=3 y int b=2
 Radicals/333642: 28/sqrt ( 8 )1 solutions Answer 239054 by rfer(12657)   on 2010-08-21 15:44:23 (Show Source): You can put this solution on YOUR website!= 9.9
 Pythagorean-theorem/333623: find the cost of carpeting the rectangular room with dimensions 6.5m x 4.5m; cost = 13.85/m^21 solutions Answer 239052 by rfer(12657)   on 2010-08-21 15:43:12 (Show Source): You can put this solution on YOUR website!6.5*4.5=29.25 29.25*13.85=405.11
 test/333626: How do you do algebra I need help understanding algebra1 solutions Answer 239048 by rfer(12657)   on 2010-08-21 15:36:52 (Show Source): You can put this solution on YOUR website!Get a GED math book
 Travel_Word_Problems/333616: A cyclist leaves home and rides due east for a distance of 25 km. She returns home on the same bike path.If the entire trip takes 3 h, what is her average speed? 1 solutions Answer 239046 by rfer(12657)   on 2010-08-21 15:36:21 (Show Source): You can put this solution on YOUR website!50/3=17 kmph
 Money_Word_Problems/333640: Henri purchased a stero from a wholesaler for \$400 and then sold it in his electronic warehouse for \$450. What was his markup as a percentage of his purchase price?1 solutions Answer 239044 by rfer(12657)   on 2010-08-21 15:34:21 (Show Source): You can put this solution on YOUR website!50/400=0.125=12.5%
 Travel_Word_Problems/333629: an airplane travels 40 miles in 5 minutes. what is its speed in miles pre hours1 solutions Answer 239043 by rfer(12657)   on 2010-08-21 15:33:04 (Show Source): You can put this solution on YOUR website!40*(60/5)=480 mph