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The vertex of a parabola |
2008-09-30 |
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From Anne:
How do you find the vertex of the function f(x)=-x squared+7x-6
Answered by Penny Nom. |
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Lines that pass through a point |
2008-09-30 |
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From Abigail:
what is the name for a point that a group of lines pass through that contains the letters c e n p i l?
Answered by Penny Nom. |
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z(z+1)-x(x+1) / z-x |
2008-09-30 |
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From sylvia:
z(z+1)-x(x+1) / z-x
HOW DO I SIMPLIFY THIS
Answered by Penny Nom. |
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a(a+1) - b(b+1) |
2008-09-30 |
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From Shaun:
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.
Answered by Penny Nom. |
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The perimeter of a triangle |
2008-09-29 |
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From Debbie:
How do I calculate the perimeter of a triangle if the lengths of two sides are equal and all the angles are known?
Answered by Harley Weston. |
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Half life |
2008-09-29 |
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From aisyah:
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
Answered by Harley Weston. |
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The empty set |
2008-09-29 |
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From wahab:
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.
Answered by Harley Weston. |
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The nth term |
2008-09-29 |
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From shauna:
The first five numbers in a sequence are
40, 37 34, 31, 28
Find an expression for the nth number in the sequence.
Answered by Penny Nom. |
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cos^2x - 3cosx = 1 |
2008-09-29 |
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From Danielle:
cos2x - 3cosx = 1
Answered by Penny Nom. |
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How tall is the wall? |
2008-09-29 |
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From ash:
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?
Answered by Penny Nom. |
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How many parallel tangents may a circle have? |
2008-09-29 |
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From Manish:
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..
Answered by Walter Whiteley. |
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The length of one side of a square |
2008-09-28 |
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From Mela:
The area of a square is 841cm².
What is the length of one side of the square?
What is its perimeter?
Answered by Penny Nom. |
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Is it possible to a function to be both even and odd ? |
2008-09-28 |
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From Mohammed:
Is it possible to a function to be both ( Even and Odd )
Answered by Harley Weston. |
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3,6,10,15,and 21 |
2008-09-28 |
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From jarred:
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.
Answered by Walter Whiteley. |
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The area of an arched transom |
2008-09-28 |
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From Ivan:
What is the formula for figuring out the square footage of arched transom windows & doors?
Answered by Harley Weston. |
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