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# Recent problems solved by 'rfer'

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 Polynomials-and-rational-expressions/474243: divide (24b^3+16b^2+24b+38) divided by (4b+4) ^means raising to that power1 solutions Answer 325263 by rfer(12657)   on 2011-07-25 17:24:10 (Show Source): You can put this solution on YOUR website!6b^2-2b+8 R=6
 Linear-equations/474251: I need help with labeling each axis of coordinate plane, x intercept, y intercept and vertex 1 solutions Answer 325261 by rfer(12657)   on 2011-07-25 17:18:08 (Show Source): You can put this solution on YOUR website!x int= (-2,0) (2,0) y int =-4 vertex= (0,-4) axis =0
 Numbers_Word_Problems/473878: find the nearest to 16438 that is exactly divisible by 111 solutions Answer 325011 by rfer(12657)   on 2011-07-24 20:14:09 (Show Source): You can put this solution on YOUR website!=16434
 Radicals/473791: How do I solve this please? 14sqrt (-5)^14= the problem has 14 in the arm of the sqrt then has (-5)^14 inside the sqrt Thank you!1 solutions Answer 324985 by rfer(12657)   on 2011-07-24 17:01:16 (Show Source): You can put this solution on YOUR website!14 sqrt(-5)^14 (14sqrt(-5))^14 =+5
 Polynomials-and-rational-expressions/473787: Essay: Show all work. Find the quotient: (y^4 + 7y - 2) / (y^2 + 2)1 solutions Answer 324983 by rfer(12657)   on 2011-07-24 16:49:28 (Show Source): You can put this solution on YOUR website!y^2-2 R=7y+2
 Numeric_Fractions/473809: how do i solve 3/7x-8=6 solve for x.....? please help 1 solutions Answer 324982 by rfer(12657)   on 2011-07-24 16:44:17 (Show Source): You can put this solution on YOUR website!3/7x-8=6 add 8 to both sides 3/7x-8+8=6+8 3/7x=14 divide both sides by 3/7 x=14/(3/7) invert and multiply x=14*7/3 x=98/3 x=32 2/3 use either form for x depends on what your teacher wants.
 Percentage-and-ratio-word-problems/473623: Junior ate 30% of the sandwiches at the picnic. If he ate 1 ½ sandwiches, how many sandwiches were there ?1 solutions Answer 324947 by rfer(12657)   on 2011-07-24 14:16:02 (Show Source): You can put this solution on YOUR website!1.5/0.3=5
 Polynomials-and-rational-expressions/473733: find the greatest common factor of 20a^3b, 16a^2, and 36ab^31 solutions Answer 324945 by rfer(12657)   on 2011-07-24 14:13:00 (Show Source): You can put this solution on YOUR website!=4a
 Quadratic_Equations/473734: Solve by factoring x2 + 5x - 6 = 01 solutions Answer 324942 by rfer(12657)   on 2011-07-24 14:11:19 (Show Source): You can put this solution on YOUR website!(-1x-6)(-1x+1)
 Percentage-and-ratio-word-problems/473582: 35,752 is 43.6% of what number 1 solutions Answer 324830 by rfer(12657)   on 2011-07-24 01:12:36 (Show Source): You can put this solution on YOUR website!35752/0.436=82,000
 Percentage-and-ratio-word-problems/473594: Profits in the second quarter for a local retailer were 112% of that in the first quarter. Profits in the third quarter were 87% of the first quarter. the profit fot the the three quaters combined exceeded \$255,000. what were the profits for each quarter.1 solutions Answer 324829 by rfer(12657)   on 2011-07-24 01:10:06 (Show Source): You can put this solution on YOUR website!x+1.12x+.87x=255000 2.99x=255000 x=\$85,284.28 ist q 1.12x=\$95,518.39 2nd q 0.87x=\$74,197.32 3rd q
 Systems-of-equations/473312: 3x+y=9 x=3, y=01 solutions Answer 324572 by rfer(12657)   on 2011-07-22 23:42:32 (Show Source): You can put this solution on YOUR website!3*3+0=9 9=9
 Linear_Equations_And_Systems_Word_Problems/473204: x(x+1)-5(x+1)1 solutions Answer 324496 by rfer(12657)   on 2011-07-22 17:34:44 (Show Source): You can put this solution on YOUR website!x^2+x-5x-5 =x^2-4x-5
 decimal-numbers/473180: Question: Multiply. -7(2a2 - 4) Question: Multiply. 0.5(a + b - 5) Question: Factor. bx – by + bz Question: Combine like terms (simplify). 12x + 4 – 11y – 6x – 9 – Question: Evaluate the expression 3x2y when x = 3 and y = 5. Question: Write as a fraction and simplify. z-4 Simplify. (23)-2 Question: Simplify. (x-1y1)5 Question: Write in scientific notation. 0.000005 Question: Write in standard notation. 31 x 107 Question: Perform the indicated operations (give your answer in scientific notation). (5 x 102) x (5.6 x 104) Question: Solve. x – 2.1 = –7.5 Question: Solve. 2 - x = 11(x - 1) Question: If 5 times a number is increased by 5, the result is 30. Find the number. 1 solutions Answer 324495 by rfer(12657)   on 2011-07-22 17:33:00 (Show Source): You can put this solution on YOUR website!A) -14a^2+28 B) 0.5a+0.5b-2.5 C) b(x-y+z) D) 6x-11y-5 E) 3*3*2*5=90 F) -46 G) 5.0X10^-6 H) 310,000,000 I) 2.8X10^207 J) x=-5.4 K) 2-x=11x-11 -12x=-13 x=1 1/12 L) 5x+5=30 5x=25 x=5
 Linear_Algebra/473013: 1.) 2/3 of what number is 16? 2.) solve for m: 2/3=m/42 3.) solve for z:6=z/5.9 4.) Write the answer to the nearest tenth. 449/0.42Fill in the blank with so that the resulting inequality is true. 7/16_________0.8751 solutions Answer 324333 by rfer(12657)   on 2011-07-21 23:49:21 (Show Source): You can put this solution on YOUR website!1) x=16/(2/3) x=16*3/2 x=48/2 x=24 2) 2/3=m/42 3m=84 m=84/3 m=28 3) 6=z/5.9 6*5.9=z z=35.4 4) 449/0.42=1069.0 5) 7/16__<__0.875 7/16=0.4375
 Numeric_Fractions/472997: 21=-3/2(x-2)1 solutions Answer 324332 by rfer(12657)   on 2011-07-21 23:42:04 (Show Source): You can put this solution on YOUR website!21/(-3/2)=x-2 21*-2/3=x-2 -14=x-2 x=-12
 percentage/472995: The sales tax is \$47 on a purchase of a dining room set for \$940. What is the sales tax rate?1 solutions Answer 324331 by rfer(12657)   on 2011-07-21 23:40:14 (Show Source): You can put this solution on YOUR website!47/940=0.05=5%
 Inequalities/472790: DG’s Plumbing and Heating charges \$50 plus \$65 per hour for emergency service. Bill remembers being billed just over \$450 for an emergency call. How long, to the nearest hour, was the plumber at Bill’s house? 1 solutions Answer 324279 by rfer(12657)   on 2011-07-21 19:45:17 (Show Source): You can put this solution on YOUR website!(450-50)/65=6.2 hrs rounded to 6 hrs
 Rectangles/472952: The length of a rectangular rug is 6 feet. If the area is 30 feet2, what is the perimeter of the rug? 1 solutions Answer 324277 by rfer(12657)   on 2011-07-21 19:40:25 (Show Source): You can put this solution on YOUR website!30/6=5 2*5+2*6=22 ft
 Angles/472943: Find the complementary angle of 42°1 solutions Answer 324276 by rfer(12657)   on 2011-07-21 19:39:07 (Show Source): You can put this solution on YOUR website!90-42=48 degrees
 Linear-equations/472948: 2x-3(x-14)=-5 i need help with an explanation1 solutions Answer 324275 by rfer(12657)   on 2011-07-21 19:37:54 (Show Source): You can put this solution on YOUR website!2x-3x+42=-5 -x=-47 x=47
 Money_Word_Problems/472779: A store gives a 10% discount to all kids off the original cost during a back to schoolsale an additional 15% is taken off discounted price thy purchase it for 306 how much was originally cost?1 solutions Answer 324245 by rfer(12657)   on 2011-07-21 17:49:55 (Show Source): You can put this solution on YOUR website!306/0.85=360 360/0.90=\$400
 Quadratic_Equations/472895: Find the vertex, line of symmetry, the maximum or minimum value of the quadratic function, and graph the function f(x)=-2x^2+2x+3 ^ means it is raising to that power1 solutions Answer 324242 by rfer(12657)   on 2011-07-21 17:44:00 (Show Source): You can put this solution on YOUR website!Vertex (0.5,3.4) Max Axis = 0.5 (1.8,0) (0.8,0)
 Angles/472900: find the supplement of 53 degrees 1 solutions Answer 324238 by rfer(12657)   on 2011-07-21 17:37:23 (Show Source): You can put this solution on YOUR website!180-53=127 degrees
 Linear-equations/472918: 3/4x=-9 How do I solve for X?1 solutions Answer 324236 by rfer(12657)   on 2011-07-21 17:35:58 (Show Source): You can put this solution on YOUR website!x=-9/(3/4) x=-9*4/3 x=-36/3 x=-12
 Travel_Word_Problems/472615: in seconds, how fast would one cover 17 miles traveling at 50 mph?1 solutions Answer 323990 by rfer(12657)   on 2011-07-20 21:07:54 (Show Source): You can put this solution on YOUR website!19.2 minutes * 60=1152 seconds
 Miscellaneous_Word_Problems/472617: what is the difference between the hundreds place and the hundredths place?1 solutions Answer 323989 by rfer(12657)   on 2011-07-20 21:04:41 (Show Source): You can put this solution on YOUR website!hundreds place is three places to the left of the decimal hundredths place is two places to the right of the decimal
 Sequences-and-series/472554: Find the arithmetic means between -2 and 12 and please explain how you got it.1 solutions Answer 323988 by rfer(12657)   on 2011-07-20 21:02:15 (Show Source): You can put this solution on YOUR website!(-2+12)/2= 10/2=5 means That make 7 on each side for the means
 Angles/472612: The degree measure of an angle and the degree measure of it's supplement are equal. Find the degree measure of each angle.1 solutions Answer 323987 by rfer(12657)   on 2011-07-20 20:59:30 (Show Source): You can put this solution on YOUR website!2x=180 both equal 90 degrees
 Average/472565: what is the average of 1/6,1/8, and 2/4?1 solutions Answer 323986 by rfer(12657)   on 2011-07-20 20:58:14 (Show Source): You can put this solution on YOUR website!(4/24+3/24+12/24)/3=(19/24)(1/3)=19/72
 Travel_Word_Problems/472589: Driving at 53 mph one cover 17 miles in:1 solutions Answer 323984 by rfer(12657)   on 2011-07-20 20:52:50 (Show Source): You can put this solution on YOUR website!D=rt t=D/r t=17/53 t=0.32 hrs or 19.2 minutes