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The vertex of a parabola |
2008-09-30 |
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Anne pose la question :
How do you find the vertex of the function f(x)=-x squared+7x-6
Penny Nom lui répond. |
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Lines that pass through a point |
2008-09-30 |
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Abigail pose la question :
what is the name for a point that a group of lines pass through that contains the letters c e n p i l?
Penny Nom lui répond. |
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z(z+1)-x(x+1) / z-x |
2008-09-30 |
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sylvia pose la question :
z(z+1)-x(x+1) / z-x
HOW DO I SIMPLIFY THIS
Penny Nom lui répond. |
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a(a+1) - b(b+1) |
2008-09-30 |
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Shaun pose la question :
I need to factor (a-b) out of the following: a(a+1) - b(b+1). I know it is simple but I cannot remember how.
Penny Nom lui répond. |
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The perimeter of a triangle |
2008-09-29 |
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Debbie pose la question :
How do I calculate the perimeter of a triangle if the lengths of two sides are equal and all the angles are known?
Harley Weston lui répond. |
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Half life |
2008-09-29 |
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aisyah pose la question :
if dA/dt = kA
and A(0) = A as the model for the decay of a radioactive substance,
how can show that in general, the half life T of substance is T = -(In 2)/k
Harley Weston lui répond. |
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The empty set |
2008-09-29 |
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wahab pose la question :
Why a null set is called a set?
the definition of set includes that a set is a collection of well defined objects
But a null set is having no value.
Harley Weston lui répond. |
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The nth term |
2008-09-29 |
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shauna pose la question :
The first five numbers in a sequence are
40, 37 34, 31, 28
Find an expression for the nth number in the sequence.
Penny Nom lui répond. |
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cos^2x - 3cosx = 1 |
2008-09-29 |
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Danielle pose la question :
cos2x - 3cosx = 1
Penny Nom lui répond. |
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How tall is the wall? |
2008-09-29 |
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ash pose la question :
you and bob are separated by a tall wall you stand 10 feet further from the wall
than bob your angle of elevation is 37 degrees and his 44 degrees
how tall is the wall?
Penny Nom lui répond. |
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How many parallel tangents may a circle have? |
2008-09-29 |
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Manish pose la question :
how many parallel tangents may a circle have? the text book shows two.but a circle can have infinite tangents.then why not parallel tangents coz
theoretically each tangent have a parallel tangnts then no. of parallel tangent a circle may have is equals to half of the infinity i.e. infinity..
Walter Whiteley lui répond. |
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The length of one side of a square |
2008-09-28 |
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Mela pose la question :
The area of a square is 841cm².
What is the length of one side of the square?
What is its perimeter?
Penny Nom lui répond. |
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Is it possible to a function to be both even and odd ? |
2008-09-28 |
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Mohammed pose la question :
Is it possible to a function to be both ( Even and Odd )
Harley Weston lui répond. |
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3,6,10,15,and 21 |
2008-09-28 |
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jarred pose la question :
i am currently stumped on a math project that requires me to find out the recursive formula for a sequence of numbers. the numbers in the sequence are 3,6,10,15,and 21. Thank you for your time.
Walter Whiteley lui répond. |
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The area of an arched transom |
2008-09-28 |
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Ivan pose la question :
What is the formula for figuring out the square footage of arched transom windows & doors?
Harley Weston lui répond. |
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