All Answers 358149 Answers

So it just means " A and B and C are all true."

And the answer is false ?

@@ End of Day Wrap - Monday  30/6/14   Sydney, Australia   Time 9:50pm   ♬ 

Hi everyone,

It was an extremely quiet day today.  Answers were given by CPhill, Henk1668, Rosala, CPhill, Pokemonfan58 and NinjaDevo.

NinjaDevo snuck in very quietly yesterday and earned himself a star.  Sorry Ninja, I didn't notice until today, you are very stealthy.   Anyway

♬         !!! CONGRATULATIONS NINJADEVO !!!          ♬           

Andre Massow has done some more work on the site, the look is just a little different.  these are tow differences that I have noticed.

•  There are now blue ticks on the answer page.

• The other language forums are now indicated by the language initials as before but also by national flags.  These can be found at the bottom of each page.  If you want to go to a different forum just click the appropriate portal and you will be whisked away.  You will have to sign in again though when you arrive.

• There are now 12 people on the Top Answerers board, before there were 10.  This means that Rosala and GoldenLeaf are now on the board.

♬         !!!  CONGRATULATIONS ROSALA AND GOLDENLEAF   !!!        ♬          

Andre Massow, Site Owner and Developer, has made it very clear that there is to be no religious material of any kind posted on this forum.         

That is all for today, thank you everyone,

Melody.

This is a question of Boolean logic, where the logic table for AND looks like:

Alternatively, think of AND as multiply, true as 1 and false as 0.

Your question, as you've stated it, is incomplete!  Does it have anything to do with the angles whose tangent is +1?

To me this question is nonsense but Alan already answered it anyway.

Added later: Boolean logic - yes I should have realised.

Well Alan, I have absoutely no idea what this question is about so I'll give you thumbs up for providing A answer.

Yours is actually very similar to Rosala's Henk1668.  Just remember that when you multiply by 100 you must not forget to add the % sign.  It is very important.

$$\begin{array}{rll}
a-3\times \left(\frac{-1}{2}\right)-\frac{1}{2}&=&0\\\\
a&=&3\times \left(\frac{-1}{2}\right)+\frac{1}{2}\\\\
a&=&\left(\frac{-3}{2}\right)+\frac{1}{2}\\\\
a&=&\frac{-3+1}{2}\\\\
a&=&\frac{-2}{2}\\\\
a&=&\;-1


\end{array}$$

false

false

false

(On the grounds that you can't derive a true statement by "anding" a set of false ones, or a set containing a false one) ??

you can always use:

(part/total)x100

(225/2250)x100=10

$$\begin{array}{rll}
30000&=&15500(1+\frac{5.75}{4})^{4t}\\\\
\frac{30000}{15500}&=&(1+\frac{5.75}{4})^{4t}\\\\
\frac{60}{31}&=&(2.4375)^{4t}\\\\
log\left(\frac{60}{31}\right)&=&log\left(2.4375^{4t}\right)\\\\
log\left(\frac{60}{31}\right)&=&4t\;log \;2.4375\\\\
\dfrac{log\left(\frac{60}{31}\right)}{4log \;2.4375}&=&t\\\\

\end{array}$$

$${\frac{{log}_{10}\left({\frac{{\mathtt{60}}}{{\mathtt{31}}}}\right)}{\left({\mathtt{4}}{\mathtt{\,\times\,}}{log}_{10}\left({\mathtt{2.437\: \!5}}\right)\right)}} = {\mathtt{0.185\: \!291\: \!084\: \!619\: \!587\: \!8}}$$

Tues 30/6/14

♬                                        ♬ ♬ MELODY ♬ ♬

Reinout is back - Lunch box unwrap.

Can we use other numbers as well?  I'm not sure I understand.

So now we are to find what % is 225 creatures in the zoo of 2250 creatures !

so to find it out we'll do it like this :

225/2250  x  100  ( here we'll cut each zero of 2250 and 100)

=225/225  x 10  

=1/1 x 10

=10  so 225 creatures is the 10% of the total creatures which is 2250

I hope you've understood ut if not then pls be free to ask!

I hope this helps !

I'm assuming that the "directly overhead" refers to "directly ovehead" the weather office.

We need the tangent function, here. Note that, we know the amgle of elevation, and the distance that the searchlight is from the weather office. And we're looking for the opposite side of the angle (the height of the clouds above the ground).....so we have

tan(35) = h/200    where h is the height of the clouds...

I can provide a general diagram....if you need it......

I think that this is really your intended question

f(x)=x^2+2x-3      find f(0)

well what you do is replace all the xes with 0

f(0)=0^2+2*0-3=0+0-3=-3

f(0)=-3

The first thing that we can do is to find the slope....this is given by the change in y divided by the change is x.

y changes from -4 to 2   =  6       And x changes from -10 to -1  = 9

So the slope is 6/9   = 2/3    So, every time y changes by 2,  x changes by 3.  Put another way, everytime x changes by 1, y changes by 2/3.

And the y intercept is where x = 0.  So from -1 to 0, x changes by 1 and y changes by 2/3. So 2 + 2/3 = 8/3.

So the y intercept  is   (0, 8/3)

Well....here we have an angle, the adjacent side, and we're looking for the hypoteneuse (the rope length).

The thing that relates all of these is the cosine.   So we have......

cos(13) = 25/h      where h is the rope length.    Rearranging, we have

h = 25/cos(13) = about 25.66 ft.   (rounded to the nearest hundredth ft)

this video looks pretty good.

I just did a huge answer here and I have lost the lot!   

6! reads as 6 factorial

6!=1*2*3*4*5*6

34! / (34-6)! 6! = can be entered into any calculator but you will need to put the bottom in brackets

like this  34!/((34-6)!*6!)=

$${\frac{{\mathtt{34}}{!}}{\left((\left({\mathtt{34}}{\mathtt{\,-\,}}{\mathtt{6}}\right)){!}{\mathtt{\,\times\,}}{\mathtt{6}}{!}\right)}} = {\mathtt{1\,344\,904}}$$

I had writen a great deal more than this.  If you would like more explanation or you need to know how to do it by hand, please ask and i will show you.   

Excellent answer Pokemonfan58  

The sum of 1/6 and 1/7 would be 13/42, or, if you wanted the answer in decimal form rounded to the nearest hundredth, it would be about 0.31.

To find the sum of 1/6 and 1/7, we cannot simply add the numerators together and maintain the same denominator. This is because 1/6 and 1/7 have different denominators, so we don't know which denominator to maintain!

To fix this we need to find a number that is divisible by both 6 and 7. One easy way to do this is to multiply the two numbers together:

6 x 7 = 42

If we were to change the denominator to 42 for each fraction, we could add the numerators together and maintain a denominator of 42. However, this means we must change the numerator of each fraction along with its denominator.

Let's start with 1/6. We can multiply 6 by 7 to obtain 42, but this means we also have to multiply 1 by 7 to keep the fraction proportionate. If the fraction does not maintain the same proportion, it will be a completely different fraction!

We know that 1 x 7 = 7, so it is safe to say that 1/6 is equal to 7/42.

We can apply the same logic to 1/7. Since 7 x 6 is 42 we need to multiply 1 by 6 along with 7. Note: you cannot multiply each number by 7 this time, because 7 x 7 would be 49, not 42. In multiplying the numerator and denominator by 6 we know that 1/7 = 6/42.

Now we have an equation of:

6/42 + 7/42

Now we can add it as we would normally by adding the numerators and keeping the denominator to get:

6/42 + 7/42 = 13/42

If you needed the answer in decimal form it would be about 0.3095238095, or 0.31 rounded to the nearest hundredth.

I hope this helped.

-pokemonfan58

It cannot be understood what exactly you mean by "(34-6)! 6!", as you have not suggested an operator for combining the values "(34-6)!" and "6!". Therefore the equation currently cannot be solved.

This simplifies as follows:

Multiply out the bracketed terms:

5*2*x + 5*8 - 5*5*x - 5*6

10x + 40 - 25x - 30

Collect like terms:

-15x +10

That's about it!