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Recent problems solved by 'flame8855'

Jump to solutions: 0..29 , 30..59 , 60..89 , 90..119 , 120..149 , 150..179 , 180..209 , 210..239 , 240..269 , 270..299 , 300..329 , 330..359 , 360..389 , 390..419 , 420..449, >>Next

 Problems-with-consecutive-odd-even-integers/633206: Find two consecutive whole numbers such that the sum of their squares is 313.1 solutions Answer 398737 by flame8855(424)   on 2012-07-30 14:49:08 (Show Source): You can put this solution on YOUR website!x^2 + y^2 = 313 y=x+1 x^2 +x^2 +1 +2x = 313 2x^2 +2x-312 = 0 x^2 +x -156= 0 x = 12 y = 13
 Numbers_Word_Problems/633211: The sum of three integers is 48. If the first integer is doubled, the sum is 60. If the second integer is doubled, the sum is 63. Find the integers.1 solutions Answer 398733 by flame8855(424)   on 2012-07-30 14:44:58 (Show Source): You can put this solution on YOUR website!x+y+z = 48 2x+y+z= 60 x+2y+z = 63 solve x+z = 48-y x+z = 63-2y 48-y = 63 -2y y = 63-48 = 15 x+y= 48-15 x+y = 33 2x+y= 45 33-x= 45-2x x= 12 x+y+z = 48 z= 48 - 12- 15 z = 21 so 12 , 15 , 21
 Numbers_Word_Problems/633213: The sum of 3 integers is 18. The third integer is four times the second, and the second integer is 6 more than the first. Find the integers.1 solutions Answer 398724 by flame8855(424)   on 2012-07-30 14:30:43 (Show Source): You can put this solution on YOUR website!x+y+z= 18 z= 4y y = 6+x x+6+x +4(6+x) =18 6x = 18 - 6 - 24 =18- 30 = -12 x =-2 y= 4 z= 16
 Percentage-and-ratio-word-problems/633208: How much gas does it take to mow a whole lawn if it takes 3/4 gallon to mow 6/7 of the whole lawn?1 solutions Answer 398721 by flame8855(424)   on 2012-07-30 14:25:09 (Show Source): You can put this solution on YOUR website!= 3/4 * 7/6 = 7/8 g
 Functions/633198: What is the domain of the function? 8/2x-16=y1 solutions Answer 398720 by flame8855(424)   on 2012-07-30 14:21:23 (Show Source): You can put this solution on YOUR website!since x cannot be zero so the domain is all the real number minus zero : R -{0}
 Graphs/633171: y − 2x = −1 x + 3y = 4 one solution or no solution1 solutions Answer 398713 by flame8855(424)   on 2012-07-30 13:59:53 (Show Source): You can put this solution on YOUR website!y-2x = -1 y = 2x +1 subsitute x+3(2x-1)= 4 x + 6x -3 = 4 7x = 7 x = 1 y = 2+1 = 3 (1,3)
 Numbers_Word_Problems/632173: the greater of two consecutive integers is 15 more than twice the smaller1 solutions Answer 398081 by flame8855(424)   on 2012-07-26 15:38:19 (Show Source): You can put this solution on YOUR website!x+1= 15 +2x x= -14 x = -13
 Linear-equations/632176: y = -3x + 5 Select one or more: (0,5) (4,-7) (4,9) (2,1) (1,2) (1,5) (2,-1) (3,-4) (3,4)1 solutions Answer 398080 by flame8855(424)   on 2012-07-26 15:34:30 (Show Source): You can put this solution on YOUR website!(0,5) (1,2) (2,-1) (3,-4)
 Linear-equations/632179: Chose the set of two ordered pairs that satisfy the equation and have the same x-coordinate but different y-coordinates. X+9 = |y| Select one: (0,0), (0,-5) (-5,5), (-5,-4) (-5,4), (-5,-4) (0,0), (5,0)1 solutions Answer 398079 by flame8855(424)   on 2012-07-26 15:33:30 (Show Source): You can put this solution on YOUR website!(-5,4), (-5,-4)
 Linear-equations/632183: Find k so that the line through (k,15) and (-14,0) has slope 15. Select one: -15 -13 -14 -121 solutions Answer 398078 by flame8855(424)   on 2012-07-26 15:32:30 (Show Source): You can put this solution on YOUR website!15/k+14 = 15 k = -13
 Percentage-and-ratio-word-problems/619176: In a school, 1200 of the students are boys. If 50% of the boys and 40% of the girls have paid their school fees, find the number of girls, given that 46% of the population has paid their school fees1 solutions Answer 389422 by flame8855(424)   on 2012-06-09 05:47:05 (Show Source): You can put this solution on YOUR website!600 + 0.4x = 0.46(1200+x) x = 800
 Length-and-distance/612379: The perimeter of a parallelogram is 50 ft and its length is 10 ft. The length of the other side is what?1 solutions Answer 385389 by flame8855(424)   on 2012-05-18 06:55:45 (Show Source): You can put this solution on YOUR website!2(x + 10) = 50 x+10 = 25 x =15
 �t�e�s�t/612380: if 8x+5x+2x+4x=114, the 5x+3= a 12 b 25 c 33 d 47 e 86 i ned to know step by step thnxs1 solutions Answer 385388 by flame8855(424)   on 2012-05-18 06:54:48 (Show Source): You can put this solution on YOUR website!19x = 114 x = 6 5x+3 = 30 +3 = 33 so the answer is c
 Rate-of-work-word-problems/612323: Connor can paint a room in 180 minutes. Andrew can paint a room in 65 minutes. If they both work together how long will it take? Round your answer to the nearest second.1 solutions Answer 385384 by flame8855(424)   on 2012-05-18 05:18:53 (Show Source): You can put this solution on YOUR website!1/180 + 1/65 = 245/11700 11700/245 = 47.75 so 47 minutes and 46 seconds
 Money_Word_Problems/612330: Mr V bought a guitar that was on sale and saved 15%. (Hint: What % did he Pay?) He paid \$340. How much did the guitar cost before the sale. What would be the formula? Thanks1 solutions Answer 385383 by flame8855(424)   on 2012-05-18 05:16:24 (Show Source): You can put this solution on YOUR website!340 = 0.85x x= 400
 �t�e�s�t/612335: N=No(1/2)^t/16 where No=the number of grams present initially & t=the elapsed time in years. If 8.0g were present initially,how many grams will remain after 48 years? Im lost in this problem....choices are A.1 gram B.2 grams C.4 grams D.None of the above1 solutions Answer 385382 by flame8855(424)   on 2012-05-18 05:14:51 (Show Source): You can put this solution on YOUR website!= 8(1/2)^3 = 1 so the answer is A.1 gram
 Permutations/612337: If you guess on three multiple choice questions where A,B,C,D are the only options, what are your chances of getting those three answers correct. 1 solutions Answer 385381 by flame8855(424)   on 2012-05-18 05:12:25 (Show Source): You can put this solution on YOUR website!P= 1/4 *1/4 *1/4 = 1/64
 test/612329: what is the value of x in the equation below ? -7x+13+11x=14+6x-211 solutions Answer 385380 by flame8855(424)   on 2012-05-18 05:10:55 (Show Source): You can put this solution on YOUR website!-2x = -20 x= 10
 Human-and-algebraic-language/612331: Jack bought a pizza and drink for \$2.65. If the pizza cost a penny more than 3 times the cost of drink, how much did each cost? 1 solutions Answer 385379 by flame8855(424)   on 2012-05-18 05:09:26 (Show Source): You can put this solution on YOUR website!x + y = 6.25 x= 0.01 +y 2y + 0.01 = 6.25 2y = 6.24 y = 3.14 y = 3.11
 Numbers_Word_Problems/612299: The sum of two numbers is 38. Four times the smaller exceeds three times the larger number by 12. Find the numbers.1 solutions Answer 385378 by flame8855(424)   on 2012-05-18 05:07:52 (Show Source): You can put this solution on YOUR website!x+y = 38 4x = 3y +12 4x-3y = 12 -4x-4y=-152 -7y = -140 y = 20 x = 18
 Travel_Word_Problems/612301: It took Diego 5hours to drive to Vegas. If he traveled at an average speed of 62miles per hour how far did he drive?1 solutions Answer 385377 by flame8855(424)   on 2012-05-18 05:05:20 (Show Source): You can put this solution on YOUR website!62*5 = 310 miles
 test/612324: one third of some number decreased by 12 is 3. what is the number? 1 solutions Answer 385376 by flame8855(424)   on 2012-05-18 05:04:01 (Show Source): You can put this solution on YOUR website!x/3 -12 = 3 x = 45
 Proportions/612363: Find three numbers proportional to 5,8 and 9, such that their sum is 1101 solutions Answer 385375 by flame8855(424)   on 2012-05-18 05:02:23 (Show Source): You can put this solution on YOUR website!5x + 8y+9x =110 x = 5 25, 40 , 45
 Graphs/612367: please help me solve this equation choose the equation of the line parallel to the line that passes x-2 that passes through the point (0,4)1 solutions Answer 385374 by flame8855(424)   on 2012-05-18 05:01:06 (Show Source): You can put this solution on YOUR website!y = x-2 slope = 1 y= x+b (0,4) 4= 0 +b b=4 y= x+4
 Proportions/610638: 0.06(1000-x)+0.05x=7001 solutions Answer 384530 by flame8855(424)   on 2012-05-14 06:52:22 (Show Source): You can put this solution on YOUR website!60 - 0.06x +0.05x = 700 -0.01x= 640 x = -64000
 test/610692: 1 solutions Answer 384529 by flame8855(424)   on 2012-05-14 06:48:18 (Show Source):
 Angles/610697: angle A = (3x + 18)°, angle B = (2x − 8)° what is x 1 solutions Answer 384528 by flame8855(424)   on 2012-05-14 06:48:00 (Show Source): You can put this solution on YOUR website!more info needed
 Age_Word_Problems/610712: in three years time Ann will be one third of her mothers age. In another 18 years from now ,Ann will be half her mothers age. how old is her mother now?1 solutions Answer 384527 by flame8855(424)   on 2012-05-14 06:44:29 (Show Source): You can put this solution on YOUR website!A+3 = 1/3 (M+3) A+18 = (M+18)/2 A+3 = 1/3 (M+3) -A-18 = -(M+18)/2 -15 = M/3 +1 -M/2 -9 M = 42
 test/610714: Age of father is '4x' when his son is 'x' years old. When son is '5x' what will be the age of father?1 solutions Answer 384525 by flame8855(424)   on 2012-05-14 06:32:07 (Show Source): You can put this solution on YOUR website!x+4x = 5x 4x+4x= = 8x
 test/610509: 1 solutions Answer 384437 by flame8855(424)   on 2012-05-13 16:01:30 (Show Source):
 test/610451: 1 solutions Answer 384421 by flame8855(424)   on 2012-05-13 14:28:33 (Show Source):