All Answers 358524 Answers

If the average of 5 numbers is 8, their sum must be 40.

And if the average of two of them is -6, their sum must be -12.

So, the sum of the other three numbers is 40 - (-12) = 40 + 12  = 52.

I did one like this just recently.

3rd quad

cosx=-3/5        

sinx=-4/5

tanx=4/3

cos is adj/hyp = 3/5

so opp must be 4

it is the third quad so sine, cos, sec and cosec are negative and tan and cot are positive.

I haven't explained it brilliantly I know that but maybe you understand.  

Could you express that a little better please anon?

where did the c come from?

$$\\ab=6\sqrt2\\
ac=?$$

If that is your question, it doesn't make sense.  

@@ End of Day Wrap     Sat 8/11/14      Sydney,   Australia       Time 12:50 am      (Really sunday)         ♬

Hi all,

I'm home again!   We had some great answers today from Alan, CPhill, gino3141, bailey, mathematician, and robtre.  Thanks all    

Our town Crier has put out a call to Chiurgeon Tud.  Queen Guinevere requires his attendance forthwith !

Sun 9/11/14

1) Chiurgeon Tud has graaced us with his presence.

Say you want to round 345.9824 to the neares hundredth.

The answer is 345.88

now 345.9824=3.459824*10^2

Using your logic then to round this to the nearest hundreth the answer would be

3.45*10^2

BUT

3.45*10^2 is not equal to 345.88 so they cannot both be rounded to the nearest hundredth.

That is simply not correct!

This originated from here. :)

The sine ratio is the opposite side divided by the hypotenuse in a right angled triangle.

If you know 2 angles  of any triangle then you know the 3rd  because they have to add up to 180 degrees.

Any 2 triangles that have all the same angles are similar triangles.

this means that the ratio of their corresponding sides will be the same.

So

any 2 triangles with a right angle and one of the accute angles equal will be similar triangles 

so

the sine ratio for a specific acute angle will always be the same.       Capiche?

Are you trying to point out my "it" is not specific enough to explain what I am rounding to the hundreths place? I was not thinking of 2.0333333333333333333333333 * 10^9 as a value, I was explaining it as two seperate values.

I rounded the number 2.0333333333333333333333333 to the nearest hundreth: 2.03.

If I you explain my error in thinking more clearly or in more depth, that would be helpful.

I shall get the town crier to call him!!!

Here be the Town Crier's Cry

"e" doesn't stand for much.......it's kind of "testy" that way....it'll yell at the kids and tell them to get off the lawn........

You miss my point :))

It is not to the hundredth place

This is you number

2.0333333333333333333333333*10^9

I shall write it correct to the hundredth place for you

2033333333.33

0r

2.03333333333*10^9

Now that is written correct to the nearest hundredth !!!    :)))

2033333333.3333333333333333  in scientific notation???

I think it would be:   " 2 much "

Thank you. I actually did not know Euler's number before I searched on it a bit to answer this question.

Nope....he must have gone on a quest for that Roman zero !!!  (or maybe he's off to help Sisyphus !!!)

The whole of my operations was rounding it to three significant figures. In explaining that particular step though, it was clearer to say "hundreths place" than "three significant figues". I will add "three significant figures" to the end of my explanations if you think that will be a better answer for the question asker.

Yea well a reflection in the line y=x works to and it makes a lot more sense.

But you can do it you way - nothing like variety  LOL 

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

The forum Ghost has been at it again!   Should we have an exorcism?

Probably not - our ghost says some really nice things sometimes.

I wonder what it is called when you exorcise a Troll ?   We could maybe do with one of those.  

Maybe Chiurgeon Tud may know how it is done.  I wonder if he is in Camelot at the present.

I think that no one has seen him for more than a moon.

CPhill have you seen Chiurgeon Morgan Tud of late?

I used to get that a lot when I was tutoring this topic....but try it for yourself......a "mirror image" rotated 90 degrees clockwise will produce the inverse......(if there is an inverse)

Your description of an inverse function was kinda weird Chris :)))

Yea well - it is all still too much for me LOL  :)))

Mmmmm...this is odd....when I answered this question....the original graph WAS there !!!!......."ghosts in the machine"......!!!!!

Thanks Chris.

I had to think about it for a while myself.

You can get some really weird questions that are like this one!

I did it and got the same answer as Gino :)

HAHAHA!!!!....I don't give a hoot about "points"......I just interpreted the situation a little differently from geno....however, since most of the responses seem to be "clustered" around his answer, I think he was on the correct trail........maybe I need to improve my reading comprehension....LOL!!!

okay - no harm done :))