All Answers 358115 Answers

Hi Melody,

I think they mean how to store a variable/answer on a calculator(?)

On scientific calculators, there is a M+ button that you press to store an answer. To retrieve the answer, press MR and to clear the memory, press M-

On a graphing calculator, press the STO-> button and enter any letter (alpha, letter) to store your answer. When you need to use the answer, simply enter it in as that letter.

y=x^2+6x-3/x-3 horizontal asymptote?

$$y=\dfrac{x^{\textcolor[rgb]{1,0,0}{3}}+6x^2-3x^1-3}{x^\textcolor[rgb]{1,0,0}{1}}$$

degree top = 3

degree botton = 1

horizontal asymptote when degree top < degree botton

                                    or degree top = degree botton

no horizontal asymptote! ( 3 < 1 no )

Yes Zegroes,   

The probability of drawing a red marble out of a box containing only white ones is 0.

we have assumed that was your question.

if 3t-7= 5t then 6t=?

$$\begin{array}{rcl}
3t-7 &=& 5t \quad | \quad -3t\\
-7&=&2t\\
2t&=&-7 \quad | \quad *3\\
6t&=&-21
\end{array}$$

12m to the 7th power divided by 3m squared

$$\dfrac {(12m)^7}{(3m)^2}=\\\\
=\dfrac{12*12*12*12*12*12*12*m*m*m*m*m*\not{m}*\not{m}}{3*3*\not{m}*\not{m}}\\\\
=\dfrac{12*12*12*12*12*12*12*m*m*m*m*m}{3*3}\\\\
=\dfrac{12*12*12*12*12*\not{3}*4*\not{3}*4*m*m*m*m*m}{\not{3}*\not{3}}\\\\
=\dfrac{12*12*12*12*12*4*4*m*m*m*m*m}{1}\\$$

$$=12^5*4^2*m^5$$         |           $${{\mathtt{12}}}^{{\mathtt{5}}}{\mathtt{\,\times\,}}{{\mathtt{4}}}^{{\mathtt{2}}} = {\mathtt{3\,981\,312}}$$

$$\dfrac {(12m)^7}{(3m)^2}=3\;981\;312\;m^5$$

I don't know what you mean.

I think that this is what you want.

$$\\y=x^2+5\\
f(x)=x^2+5$$

Is this what you mean? You really need to use brackets to make your meaning clear.

$$(12m)^7\div (3m)^2\\\\
=12^7m^7\div 3^2m^2\\\\
=(12^7\div 9)m^{7-2}\\\\
=(12^7\div 9)m^5\\\\$$

$${\frac{{{\mathtt{12}}}^{{\mathtt{7}}}}{{\mathtt{9}}}} = {\mathtt{3\,981\,312}}$$

$$\\
=3981312m^5$$

F

Find f + g, f − g, fg, and f/g and their domains.

Hi Reinout-g and Morgan Tud,

We need more input on this question so I have posted it in a different forum.

This is the address.

Well, the surface area of the whole cylinder is 

$$SA=\pi r^2+\pi r^2+2\pi rh=2\pi r^2+2\pi rh$$

So the suface area of half the cylinder must be half this much.  What would that be?

$$\left(\frac{-x^2}{2}\right)^2=\left(\frac{-1\times x^2}{2}\right)^2=
\frac{(-1)^2\times (x^2)^2}{2^2}=
\frac{1\times x^4}{4}= \frac{x^4}{4}$$

 shift  4 units to the right and shift upward  7 units

Hi again Sally1,

Replace f(x) with f(x)-7         

Replace x with x-4

It seems like the signs are the wrong way around but think about it like you are solving a little equation

x-4=0 so x= positive 4

---------------------------------------------------------------

You get 

f(x)-7 = |x-4|

after rearranging you get;

f(x)=|x-4|+7

This is how these always work.

I expect you have more of these.

put one up but try to anwer it yourself and i will tell you if it is correct.

------------------------------------------------------------------

No Zegroes

$$10=\frac{10}{1}$$

a fraction line is the same as a division sign and anything divided by 1 stays the same.

Hi Rosala,

You don't need to worry about what Zegroes says to me.  We are friends and if Zegroes crossed a line I would tell him myself and I think that if I crossed a line with him he would also tell me.  

We know when we are joking with each other - which is most of the time.  You have a little difficulty with this because of cultural differences. It is really sweet of you to arbitrate and try and smooth things between us but there is nothing to smooth.  We are just having fun.

One thing you and some others have helped me to see is that I (and maybe Zegroes) may need to be a little more careful what we say on the public forum.  People can misinterprete what we say and think that we are being nasty or rude, even though we are not.

Keep smiling Rosala,  I am so glad that you have joined us on the forum.  You are like a breath of beautiful, fresh air.

Melody.

Both these answers are perfectly correct.

This is a good question Sally, it made me think for a moment.

The rate of change between 2 points is the change in output (difference of the f(x) values) over the change in input (difference of the x vaues).  This is a line so the rate of change between any two points will always be the same.  It is the gradient.  And the gradient for this line is 7.

If you would like me to discuss this idea a little more I would be happy to do so.  

One i can get right?  0/12

This one was answered yesterday.

4!3!

There are 4 ways the first girl can be chosen.

3 ways the 2nd one can be chosen

2 ways the third girl can be chosen

1 way that the last girl can be chosen

3 ways the first boy can be chosen

etc

4*3*2*1*3*2*1

$${\mathtt{4}}{!}{\mathtt{\,\times\,}}{\mathtt{3}}{!} = {\mathtt{144}}$$

7*3=21     7*4=28 28+21=49 diffrent ways

Nvm

Is the sequence: -24, -4, 16, 36... geometric or artithmetic?

Well,

-4/-24=+1/6

16/-4=-4

So it is NOT a GP

-4--24=20

16--4=20

36-16=20

They are the same so it is IS an AP

Hi Sally1

This is it!

$$f(x)=x^2+9$$

thanks! i figured it out! 

Check out the big brain on rosala.........!!!    thumbs up and points!!!