basic algebra and arithmetic "marathon". (1 Viewer)

[ohexploitable]

New Question:

Solve:

1 < x² < 4

 

[hscishard]

Solve for x and y
=

 

[hscishard]

x=-b/2a

:jaw:. I get it. Just making sure x = d. Lol.
You can even use calculus for this question.

 

[ohexploitable]

Solve for x and y
=

x=2/15
y=4/3

 

[hscishard]

New Question:

Solve:

1 < x² < 4

1<x<2
-2<x<-1
I think.

Wow, wtf we can't use < and < now.
x is greater than 1 but less than 2
x is greater than -2 but less than -1

 

[AAEldar]

New Question:

Solve:

1 < x² < 4

 

[ohexploitable]

:jaw:. I get it. Just making sure x = d. Lol.
You can even use calculus for this question.

Are you accelerated?

 

[hscishard]

Are you accelerated?

Nop. Just one year ahead

 

[ohexploitable]

I feel as though this thread is no longer "basic algebra and arithmetic"...

 

[hscishard]

I feel as though this thread is no longer "basic algebra and arithmetic"...

Yea.

Whats 7-1 x 9 / 2.
Can be taken two ways.

 

[ohexploitable]

Yea.

Whats 7-1 x 9 / 2.
Can be taken two ways.

5/2?

How can there be 2 ways?

 

[hscishard]

5/2?

How can there be 2 ways?

I was thinking someone might take it as

 

[ohexploitable]

New Question:

 

[hscishard]

New Question:

Is it 13 by any chance.

How I did it was:


So.. sicne x+y = 1
1-3xy = 19
xy = -6

Then using complete the sqaure.

= 1 -(-12)
= 13

 

[ohexploitable]

Bingo!

 

[hscishard]

Bingo!

Where do you get these questions? I like questions with that kind of difficulty.

 

[ohexploitable]

They're from Cambridge.

 

[hscishard]

They're from Cambridge.

I'm guessing it's the Challenge questions, right? It can't possibly be in the development section.

 

[ohexploitable]

Yar, they're from the 'Extension' section.

 

[hscishard]

Should I buy the Year 11 ext book? Or keep hogging it by borrowing from the local library?

I kept renewing the book for 3 months. They didn't catch me until last week