How do I solve x^2-x-12/x^2+3x

- pokemon23

How do I solve x^2-x-12/x^2+3x

- Stacey Warren - Expert brainly.com

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- chestercat

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- ParthKohli

Factorize the numerator and denominator.
PS: Long time!

- Luigi0210

factor:
\[\frac{ (x-4)(x+3) }{ x(x+3) }\]

- pokemon23

Lol you do remember me!

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## More answers

- ParthKohli

Of course, why not? :-)

- ParthKohli

@pokemon23 Uh, you should get exactly what Luigi said.

- pokemon23

Do you mind helping me with my algebra final

- pokemon23

Study

- ParthKohli

It's an exam?!

- ParthKohli

Oh, helping you study, right? I hope you don't send your final to me and cheat :-P

- pokemon23

Yeah study I've been doing bad in algebra I lately.

- ParthKohli

OK, sure :-)

- pokemon23

This question involves a triangle. Which ration sin B,Cos B,and tan B in the accompanying diagram of Triangle ABC?|dw:1370327858157:dw|

- pokemon23

What will be the first approach to it.

- ParthKohli

Do you want all sin(B), cos(B) and tan(B)?

- pokemon23

I think so.

- ParthKohli

OK, remember SOH CAH TOA?

- pokemon23

yeah

- ParthKohli

Use it...

- pokemon23

I got 5/13 for SOH

- pokemon23

12/13 for CAH

- pokemon23

5/12 for TOA

- ParthKohli

Yeah, so say that sin(B) = 5/13, cos(B) = 12/13 and tan(B) = 5/12

- ParthKohli

and that is your answer

- pokemon23

Thanks.

- ParthKohli

Nay problem

- pokemon23

Do you the formula for this question Daniel's Print Shop purchased a new printer for 35,000. Each year it depreciates(loses values) at a rate of 5%. What will its approximate value be, to the nearest cent, at the end of the fourth year?

- pokemon23

I know its 35,000(?+.05)^4

- ParthKohli

\[35000(1 - 0.05)^4\]

- pokemon23

Forgot the formula included the 1

- ParthKohli

OK, nice

- pokemon23

I got 2850.771875

- pokemon23

will it be 2850.80

- ParthKohli

My calculator suggests something else to me. Besides, the answer cannot be as low as that

- pokemon23

forgot the extra zero

- pokemon23

Now it's 28507.71875

- ParthKohli

Yay

- pokemon23

To the nearest cent it will be 28507.72?

- ParthKohli

Yes.

- pokemon23

Can you help me with learning how to find the slope when they you give you out the coordinates.

- ParthKohli

Sure!

- pokemon23

That would be great

- ParthKohli

Do you know anything about it? Or shall I start from the beginning?

- pokemon23

Its like y1+y2/x^2+x^1

- ParthKohli

uh nope.

- ParthKohli

Here's an intro.
Suppose you're given two points on a coordinate plane. Each point has its coordinates (right?). Suppose that you connect a line between those two points.
The slope is simply rise over run.

- ParthKohli

Do you get what I mean by rise over run?

- pokemon23

I do recall rise/run

- ParthKohli

Yes.
Let's have two real points. What is the slope of a line which contains the points \((1,4)\) and \((2,3)\)?

- pokemon23

alright

- ParthKohli

Can you tell what the slope is... lol

- pokemon23

well have to use a formula

- ParthKohli

Just use rise/run

- pokemon23

I would say 0,3?

- ParthKohli

The rise is 0?

- pokemon23

1/1

- ParthKohli

Hmm... if you have two points \((1,4)\) and \((2,3)\) then look how \(1 \to 2\) and \(4 \to 3\). When 1 becomes 2, it's increased by 1 right?

- pokemon23

yeah its goes up 1

- ParthKohli

Eh... am I confusing you?

- pokemon23

not really

- ParthKohli

Look at how the \(x\)-coordinate increases. That is the run.
Look at how the \(y\)-coordinate increases. That is the rise.

- ParthKohli

Does that make sense?

- pokemon23

Yes it does

- ParthKohli

good. Now the \(x\) coordinate becomes \(2\) and it was \(1\) earlier, right? So the \(x\)-coordinate increases by \(1\). That is the run!

- ParthKohli

Can you do it for the rise?

- pokemon23

The y coordinate becomes 3 and it was 4

- pokemon23

before.

- ParthKohli

Exactly. So the \(y\) coordinate has increased by \(-1\). That is the rise. Get it?

- pokemon23

yeah I'm wondering if the question says what is the slop of the line that passes through the points A(-3,8) and B(3,6)

- ParthKohli

Seems like a good practice opportunity ;-)

- pokemon23

do we do the same thing or is it something completely different.

- ParthKohli

We do exactly the same thing.

- pokemon23

alright then

- ParthKohli

\(-3\) becomes \(3\). What is the increase?

- pokemon23

6

- ParthKohli

Correct. Is that the rise or run?

- pokemon23

that is rise

- ParthKohli

Why do you think so?

- pokemon23

because its the x

- pokemon23

coordinate

- ParthKohli

But \(x\) coordinate is the run

- pokemon23

I mixed them up so yes its the run.

- ParthKohli

And how about the rise?

- pokemon23

the rise will be -2

- pokemon23

or 2

- ParthKohli

8 becomes 6... so the increase is?

- pokemon23

2

- ParthKohli

lol no! 8 becomes 6, so the thing is decreasing right?

- pokemon23

correct so will it be -2?

- ParthKohli

Yuppers

- pokemon23

so the slop is 6/-2

- pokemon23

slope*

- ParthKohli

Careful, it's rise/run

- pokemon23

-2/6

- ParthKohli

Yeah, and simplify that

- pokemon23

1/-3

- ParthKohli

Yeah, but it's a good practice to keep the negative sign in the numerator :-)

- pokemon23

so -1/3

- ParthKohli

Hallelujah!

- ParthKohli

Do you want more for practice?

- pokemon23

sure

- ParthKohli

\((3,3)\) and \((5,2)\)

- pokemon23

-1/2

- ParthKohli

Yeah baby!

- ParthKohli

try making yourself a set of points and try to solve it.

- pokemon23

alright thanks Parth for everything I'm coming back for more later today :)

- ParthKohli

Nay problem. I may have confused you, so sorry :-|

- pokemon23

I confused myself I will see you later.

- ParthKohli

Oh, sorry :-(
Bye bye

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