20 items are filed under this topic.
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Extraneous solutions |
2010-05-22 |
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From Joe:
Question from Joe, a parent:
w+3 2w
----- - ----- = 1
w2-1 w-1
W2 is = w squared
-4
The answer is w= ------
3
but have no idea how this was solved. any help is appreciated. Thanks.
Answered by Penny Nom. |
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Redwood Park and Glendale Park |
2010-03-05 |
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From Shaun:
Question from Shaun, a student:
Redwood and Glendale Parks are each surrounded by 100 yards of
fencing. The are of Redwood Park is 25 square yards more than the area
of Glendale Park. If both parks are rectangles, what is the measurement
of each rectangle?
Answered by Harley Weston. |
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Extraneous solutions |
2009-09-20 |
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From iyana:
what is an extraneous solution? what must you do to determine whether a extraneous solution?
Answered by Stephen La Rocque and Harley Weston. |
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Extraneous solutions |
2009-06-02 |
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From Ayana:
solve and check for extraneous solutions.
3x+6/ x²-4 = x+1/ x-2
x can not = {-2,2}
Answered by Penny Nom. |
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An infinite number of solutions |
2009-03-24 |
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From Sean:
this is a linear equations problem;
first:
3535.5 + Fbd (.866) + Fbc (.5) - Fab (.5) = 0
and
-3535.5 - Fab (.866) - Fbc (.5) - Fbd (.5) = 0
Answered by Harley Weston. |
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A quadratic |
2008-10-27 |
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From Giselle:
3x squared minus 2x equals -5
Answered by Penny Nom. |
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Extraneous solutions |
2008-09-25 |
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From crystal:
/6x+7/=5x+2
Answered by Penny Nom. |
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algebra |
2008-07-31 |
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From Eric:
Would you please solve & explain this equation to me: x^2+2x=x(x+2)?
Thank you
Answered by Penny Nom & Stephen La Rocque. |
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Number of real solutions |
2007-10-05 |
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From Sujith:
The no of real solutions of the equations 1+x+x^2+x^3 = x^4+x^5 is ?
Answered by Harley Weston. |
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Two equations in two unknowns |
2007-09-22 |
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From Mary:
Having problems doing this problem, looking for a solution with the work. I would like to see how you got your answer, to see what I was doing wrong.
solve using the substitution method, is there "no solution" or "infinitely many solutions"
4x+y=4
2x+8y=0
Answered by Stephen La Rocque and Leeanne Boehm. |
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What feature on a graph shows the solution? |
2007-08-19 |
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From San:
To solve the equation 2sinx+square root 3=0, what feature of the graph,
in the form y=asinx+b would show the solution? Draw a graph to show
the solution. thanks.
Answered by Stephen La Rocque. |
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What happens when you have zero's on both sides? |
2007-06-05 |
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From Lily:
On the substitution method what happens when you have zero's on both
sides of the equation? Is that considered no solution or infinitely many?
Answered by Stephen La Rocque and Penny Nom. |
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Extraneous solutions |
2006-01-01 |
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From Liz:
Question: solve and check for extraneous solution
3(w + 1)1/2 = 6
Answered by Penny Nom. |
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Extraneous solutions |
2005-02-04 |
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From Heather:
My teacher wants to know why there are extraneous solutions in logarithms?
Answered by Penny Nom. |
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Extraneous solutions |
2004-07-28 |
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From Nicole:
When I have a problem like (2x + 3)/5 = (x + 1)/6 and the question asks to check for extraneous solutions, how do you solve that?
Answered by Penny Nom. |
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Extraneous solutions |
2003-01-24 |
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From Paul:
What is an extraneous solution and in what cases do you get one? How do you know it is extraneous?
Answered by Penny Nom. |
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Mixing solutions |
2002-09-13 |
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From Margaret:
In a chemistry laboratory the concentration of one solution is 10% hydrocholoric acid (HCl) and that of a second soulution is 60% HCl. How many mL of each should be mixed to obtain 50 mL of a 30% HCl solution??
Answered by Penny Nom. |
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A solution to an equation |
2002-08-28 |
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From A student:
How do you determine whether a pair of numbers is a solution for an equation? If you could identify the specifics steps I need to take to determine whether it is a solution or not would be appreciated! Thanks i.e. x-4=0 Pairs of numbers as possible solutions (4,7) (3,4) (0,-4).
Answered by Penny Nom. |
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The solutions of a quadratic |
2001-01-30 |
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From A student:
- Show that the product of the solutions of ax2 + bx + c = 0 is c/a.
- For each equation under the given condition, (a) find k and
(b) find the other solution. kx2 - 2x + k = 0; one solution is -3
Answered by Penny Nom. |
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Integral solutions |
2000-11-20 |
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From David:
determine all pairs of integers (x,y) which satisfy the equation 6x2 - 3xy - 13x + 5y = -11 I got y= (6x2-13x+11)/(3x-5) and i don't konw how to continue
Answered by Claude Tardif. |
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