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flame8855 answered: 424 problems
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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):

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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):

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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):

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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):

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= 3/4 * 7/6 = 7/8 g

Functions/633198: What is the domain of the function?
8/2x-16=y
1 solutions

Answer 398720 by flame8855(424) on 2012-07-30 14:21:23 (Show Source):

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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 solution
1 solutions

Answer 398713 by flame8855(424) on 2012-07-30 13:59:53 (Show Source):

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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 smaller
1 solutions

Answer 398081 by flame8855(424) on 2012-07-26 15:38:19 (Show Source):

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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):

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(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):

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(-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
-12
1 solutions

Answer 398078 by flame8855(424) on 2012-07-26 15:32:30 (Show Source):

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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 fees
1 solutions

Answer 389422 by flame8855(424) on 2012-06-09 05:47:05 (Show Source):

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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):

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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 thnxs
1 solutions

Answer 385388 by flame8855(424) on 2012-05-18 06:54:48 (Show Source):

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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):

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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?
Thanks
1 solutions

Answer 385383 by flame8855(424) on 2012-05-18 05:16:24 (Show Source):

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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 above
1 solutions

Answer 385382 by flame8855(424) on 2012-05-18 05:14:51 (Show Source):

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= 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):

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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-21
1 solutions

Answer 385380 by flame8855(424) on 2012-05-18 05:10:55 (Show Source):

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-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):

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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):

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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):

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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):

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x/3 -12 = 3
x = 45

Proportions/612363: Find three numbers proportional to 5,8 and 9, such that their sum is 110
1 solutions

Answer 385375 by flame8855(424) on 2012-05-18 05:02:23 (Show Source):

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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):

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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=700
1 solutions

Answer 384530 by flame8855(424) on 2012-05-14 06:52:22 (Show Source):

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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):

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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):

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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):

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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):

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x+4x = 5x
4x+4x= = 8x

test/610509:
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Answer 384437 by flame8855(424) on 2012-05-13 16:01:30 (Show Source):

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test/610451:
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Answer 384421 by flame8855(424) on 2012-05-13 14:28:33 (Show Source):

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