Math Game - Check it out!

[Sage]

While I don't object to a math thread, can we do more... erm... stimulating stuff? (Like sin2x=cos2x, which is a ridiculously easy problem, yet Tim and I both got it wrong on our last test).

 

[Curveball]

Originally posted by halfracedrift
Since no one is gonna state the answer.. after ss.. ha

(28.7/3.5)*9 = $73.80 / 9 hours

Next Question: What is the quadratic formula?

It's unam's turn.

 

[Sage]

Originally posted by halfracedrift
Next Question: What is the quadratic formula?

An equation in the form y = ax^2 + bx + c, and represents a parabola.

 

[Curveball]

Originally posted by Sage
An equation in the form y = ax^2 + bx + c, and represents a parabola.

I assume that the 2 is an exponent.

 

[halfracedrift]

Curveball, whenever you type something ^, it means to the power of. Just thought you'd like to know

 

[Curveball]

Originally posted by halfracedrift
Curveball, whenever you type something ^, it means to the power of. Just thought you'd like to know

I'll keep note of that.

 

[Jpec07]

12/30=100/x
30*100=300
3000/12=250
250 at bats to get to 100 from the beginning of the season
220 at bats to get to 100 hits from where she is now.

(note: this is all assuming her average of .400 stays where it's at; wait, dang! a .400 batting average! that's crazy...)

BTW, super supra, your math book forgot to take into account her 30 at bats already and 12 hits already made, so it is wrong (I love Algebra 2!)

 

[Klostrophobic]

Quadratic formula: [-b±sqrt(b²-4ac)]/(2a)

I couldn't find the sqaure root symbol in character map.

 

[U.N.A.M]

Originally posted by Sage
An equation in the form y = ax^2 + bx + c, and represents a parabola.

We just started that today in algebra class

Well, I beleive it is my turn so ......
A very easy problem.....

Find the values of a ,b , and c for the quadratic function

y= -2x- 9x + 12

The first - means negative, the second is subtraction.

 

[Klostrophobic]

Originally posted by Sage
An equation in the form y = ax^2 + bx + c, and represents a parabola.

That's a quadratic equation.

 

[Curveball]

Originally posted by Klostrophobic
Quadratic formula: [-b±sqrt(b²-4ac)]/(2a)

I couldn't find the sqaure root symbol in character map.

It's ax^2 + bx + c = 0

 

[Jpec07]

Originally posted by Klostrophobic
Quadratic formula: [-b±sqrt(b²-4ac)]/(2a)

I couldn't find the sqaure root symbol in character map.

I knew that one. I would'vebeaten you to the punch had I seen it...

(negative "b" plus or minus the square route of *parenthesis*"b" squared minus 4"a""c"*end parenthesis* all over 2a) that is the way to solve it when you are given ax^2+bx+c=0

 

[Sage]

That's a quadratic equation.

Yup.
<--- Idiot!

 

[Klostrophobic]

Originally posted by Curveball
It's ax^2 + bx + c = 0

Nope.

 

[U.N.A.M]

Originally posted by Sage
Yup.

<--- Idiot!

Yup



JK



Answer my question.....now

 

[Klostrophobic]

Originally posted by U.N.A.M
We just started that today in algebra class

Well, I beleive it is my turn so ......
A very easy problem.....

Find the values of a ,b , and c for the quadratic function

y= -2x- 9x + 12

The first - means negative, the second is subtraction.

a=-2
b=-9
c=12

Though that isn't a quadratic function as there is no exponent.

 

[U.N.A.M]

Originally posted by Klostrophobic
a=-2
b=-9
c=12

Though that isn't a quadratic function as there is no exponent.

According to my math book it is a quadratic function.

My bad, I did forget the exponent, oh well, you get the point.

 

[Klostrophobic]

So I guess it's my turn, eh?

f(x)=x^2+4
g(x)=2x

Find the composition f(g(x))

Don't bother with the work because it will just be a pain in the ass to type out.

 

[the_cobbinator]

Yay, we just did this in trig.

f(g(x)) = 2x^2+4

f(2x)
=2x^2+4

 

[Klostrophobic]

Nope. You're close.

Hint: (2x)^2=?

 

[halfracedrift]

4x^2+4 ?

 

[the_cobbinator]

Ah, I should have simplified: 4x^2+4

 

[halfracedrift]

yay.. i got it before cobb.... ha.. you can have the question though

 

[Gil]

Anybody up for calculating I.V. medication drip rates?
I'll find out which of you will make good nursing students!!!
Muahahah!!!

 

[Klostrophobic]

Is there any special knowledge we would need to calculate them, Gil?

I'm game!

 

[Timmotheus]

Well, since nobody has posted a question, I will. Derive the Law of Cosines. Show all work (duh, it's a derivation...) and draw a picture so that your answer can be easily understood.

 

[Mike Rotch]

Who can tell me what this expression can be simplified down to?



PS: I dont like maths

 

[Timmotheus]

I'm going to guess "1," simply because it looks big and scary, and one is such a friendly number.

 

[Mike Rotch]

Originally posted by Timmotheus
I'm going to guess "1," simply because it looks big and scary, and one is such a friendly number.

It is an expression - there is an = sign

Warmish -cold though.


EDIT: PM me if anyone wants the answer

 

[19xx]

I would love to know how to even start your first step