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Shapes |
2005-11-12 |
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From Tonya and Hailey:
MY THIRD GRADERS TEACHER HAS SENT HOME HOMEWORK ASKING FOR THEM TO FIND REAL-WORLD OBJECT IN MANY DIFFERENTS SHAPES A FEW HAVE US STUMPED
Answered by Penny Nom. |
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The diagonals of a trapezoid |
2005-11-11 |
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From Chris:
Is there ever a case where the diagonals of a trapezoid bisect each other?
Answered by Walter Whiteley. |
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Quadratic Equations & Given Roots |
2005-11-11 |
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From Lindsey:
I need to find the quadratic equation in the form:
f(x)=a(x2 - (-b/a)x + (c/a))
The vertex is (1, -7), the roots are (4, ?)
I need to find the other root but I don't know where to begin. My answer key says the other root is (-2). How is this possible?
Answered by Penny Nom. |
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Solving a pair of equations |
2005-11-10 |
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From Steven:
what is answer to
2 x + y = 1
y = -1/3 x - 4
Answered by Penny Nom. |
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-120 divided by -15 |
2005-11-09 |
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From Joshua:
how do you evaluate -120 divided by (-15)
Answered by Penny Nom. |
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Solve for g |
2005-11-09 |
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From Cassandra:
solve each equation or formula for the variable specified
5g+h=g, for g
Answered by Penny Nom. |
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Notation for the second derivative |
2005-11-08 |
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From Mussawar:
my question is d/dx( dy/dx) = d2y/dx2. why it is not equal to d2y/d2x.
Answered by Penny Nom. |
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A variable rectangle |
2005-11-08 |
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From Mussawar:
find the lengths of the sides of a variable rectangle having area 36 cm2 when its perimeter is minimum i do not want solution of this question. i would like to know what is mean by variable rectangle.and what is difference between rectangle and variable rectangle.also what is mean by when its perimeter is minimum.
Answered by Penny Nom. |
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When will x^2+xy+(y-x) be even? |
2005-11-08 |
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From Lana:
If x and y are integers, when will x squared+xy+(y-x) be even?
Answered by Penny Nom. |
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The height of a tower |
2005-11-08 |
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From Vinita:
Observers at point A and B, who Stand on level ground on opposite sides of a tower, measure the angle of elevation to the top of the tower to be 33 degrees and 49 degrees respectively. Another point C is 120 m from point B, Triangle ABC =67 degrees and BAC = 31 degrees. Find the height of the tower to the nearest metre.
Answered by Penny Nom. |
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Mario is 16 years older than his youngest sister, Mercedes. |
2005-11-08 |
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From Jennifer:
Mario is 16 years older than his youngest sister, Mercedes. Together, their ages total 36 years . How old is each person?
Answered by Paenny Nom. |
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Why is zero even? |
2005-11-08 |
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From Lauren:
A child in my class if having trouble with the concept of zero being an even number, I have talked with her about its zero because it is a multiple of 2, any other suggestions?
Answered by Paul Betts. |
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Une énigme échelle/échafaudage(ou boite) |
2005-11-08 |
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From Christian:
J'ai un problème & souhaite demander votre aide pour résoudre une énigme échelle/échafaudage(ou boite)
Answered by Claude Tardif. |
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Real Pay |
2005-11-07 |
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From Judy:
Is there a formula for computing "real pay"? Example - you are offered a position in your home town for $A, and another position in another town for $B. To work at $B job there would be so many hours in commute time involved (z), and a real daily commute cost (either train, bus, or auto mileage-wear, etc.) (x). How would you calculate the real pay of job $B in relation to job $A?
Answered by Claude Tardif. |
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The number is increased by the sum of its digits |
2005-11-07 |
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From Ernesto:
The number 1 is written on a blackboard. After each second the number on the blackboard is increased by the sum of its digits. is it possible that at some moment the number 123456 will be written on the blackboard?
Answered by Claude Tardif. |
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