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test/345463: Please help me solve this equation: Prove the inequality without evaluating the integral.  1 solutions
Answer 247117 by Fombitz(13828) on 2010-09-20 10:12:27 (Show Source):
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Problems-with-consecutive-odd-even-integers/345446: I would like help with this question.
If the larger of two consecutive integers is subtracted from twice the smaller integer, then the result is 21. Find the integer.
My book does not give me an example of how to solve this. It shows me how to find even numbers...
Thank You 1 solutions
Answer 247114 by Fombitz(13828) on 2010-09-20 10:02:43 (Show Source):
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Angles/345444: why wont a 3 legged chair wobble but a 4 legged chair will? 1 solutions
Answer 247113 by Fombitz(13828) on 2010-09-20 09:59:31 (Show Source):
You can put this solution on YOUR website!Three points define a plane.
Once those three points are established adding another point, that isn't in the plane, would cause an unbalance, leading to the wobble.
If the 4th point is in the plane, then it wouldn't wobble either.
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Travel_Word_Problems/345517: A car enters the freeway traveling at 60 miles per hour. A second car enters the freeway 11 minutes later traveling at 65 miles per hour. How long will it take for the second car to catch up to the first car? 1 solutions
Answer 247102 by Fombitz(13828) on 2010-09-20 09:44:11 (Show Source):
You can put this solution on YOUR website!Rate*Time=Distance

.
.
.
Convert 11 minutes to hours.
 hours
In the 11 minutes, the first car moves,
 miles
The distance traveled by the first car is,

The distance traveled by the second car is,

.
.
.
Find  when
 hr
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Triangles/345491: Two vertices of a triangle are (0,6) and (4,0), and the medians intersect at (0,2). Find the third vertex of the triangle. 1 solutions
Answer 247100 by Fombitz(13828) on 2010-09-20 09:36:12 (Show Source):
You can put this solution on YOUR website!A:(  ,  )
B:(  ,  )
C:(  ,  )
Assume that the final vertex is located at(  ,  ).
Then the median connecting (  ,  ) to the midpoint of  , located at (  ,  ), has a slope,since it also goes through (  ,  ), of,

and a y-intercept of  .
1. 
.
.
.
The median connecting (  ,  ),(  ,  ), and the midpoint of  has a slope of,

and a y-intercept of  .

The midpoint of  is (  ,  ) or (  ,  ).
It also satisfies the line,

2. 
.
.
.
From eq. 1,

Substituting into eq. 2,

Then

The final vertex is located at (  ,  )
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test/345494: If x is a real number, then show that 0<(1/x^2+6x+10)≤1. 1 solutions
Answer 247091 by Fombitz(13828) on 2010-09-20 08:55:48 (Show Source):
You can put this solution on YOUR website!In order for  , then  for all  .
Convert to vertex form by completing the square,  where (  ,  ) is the vertex.

Since the coefficient of  is positive, the parabola opens upwards and the value at the vertex is the function minimum.
(  ,  )=(  ,  )
Since the function value is never less than 1, then the inverse of the function value is never greater than 1.
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Graphs/345419: let f(x)=-1/2x^2+2x+3
find and graph:
a) the x-coordinate of vertex
b) the y-coordinate of vertex
c) the axis of symmetry
d) the max/min value of f and which value it is
e) the x value that gives max/min value of f 1 solutions
Answer 247089 by Fombitz(13828) on 2010-09-20 08:46:04 (Show Source):
You can put this solution on YOUR website!
Complete the square to put the function into vertex form,  where (  ,  ) is the vertex.

a) 
b) 
c) The vertex lies on the axis of symmetry, 
d)  since the coefficient of  is negative the parabola opens downward and the value at the vertex is a maximum.

e) 
.
.
.
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Linear_Equations_And_Systems_Word_Problems/345384: An elephant herd is moving at a rate of 6 mph. a stray ran at 10mph and caught up in five minutes. How long(in hours) did the stray run to catch up and how far did it run?
1 solutions
Answer 247081 by Fombitz(13828) on 2010-09-20 07:59:39 (Show Source):
You can put this solution on YOUR website!Rate*Time=Distance
.
.
.
 minutes=  hour
So the stray ran (  ) hour.
.
.
.

.
.
HX is the distance that the herd moved.
In  minutes, the herd moved,
 mile
.
.
SX is the distance that the stray moved.
In 5 minutes, the stray moved,

.
.
SH is the distance they were intially separated.
.
.
 mile
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Length-and-distance/345492: A segment has end points (4,-2) and (13,13). Find the coordinates of the points that trisect the segment. 1 solutions
Answer 247080 by Fombitz(13828) on 2010-09-20 07:38:38 (Show Source):
You can put this solution on YOUR website!Calculate the difference in x values.

Trisect the difference or divide it in  .

.
.
.
Calculate the difference in y values.

Divide it in  .

.
.
.
Starting at (  ,  ) add (  ,  )
(  ,  )+(  ,  )=(  ,  )
Starting at (  ,  ), add (  ,  )
(  ,  )+(  ,  )=(  ,  )
Finally one more time should get us to the second given point.
(  ,  )+(  ,  )=(  ,  )
Verifying that the method was proper.
(  ,  ) and (  ,  ) are the two points.
.
.
.
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Angles/345375: the ratio of the measure of the complement of angle G to the measure of the supplement of the complement of angle G is 1:4
find the ratio of the measure of angle G to the supplement og angle G
use algebra to show your work 1 solutions
Answer 247077 by Fombitz(13828) on 2010-09-20 07:28:08 (Show Source):
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Expressions-with-variables/345467: (the original problem was solve the equation and use set equation to express solution sets for equations with no solution or equations that are true to all real numbers the equation was 2+3(2x-7)=9-4(3x+1) i solved for x and got x=4/3 how would i use set notation to express solution set x=4/3 i belive the answer to be {x|x=4/3} 1 solutions
Answer 247076 by Fombitz(13828) on 2010-09-20 07:24:39 (Show Source):
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Exponents/345487: Hi there!
Is there anybody out there willing to help me?
(X^4 * 10^-3 * 5 * 10^11)/(x^-3 * 3 * 10^2 * 20 * 10^-3) 1 solutions
Answer 247070 by Fombitz(13828) on 2010-09-20 07:16:39 (Show Source):
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Equations/345374: A theater owner want to divide an 1800 seat theatre in 3 sections. With tickets costing 20, 35, and 50. He wants to have twice as many 20 dollar tickets as the sum of the other tickets and he wants to earn 48,000 from a full house. To find out how many seats in each section, solve the equations.
x+y+z=1800
x=2(y+z)
20x+35y+50z=48,000 1 solutions
Answer 247030 by Fombitz(13828) on 2010-09-19 23:14:31 (Show Source):
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