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4*x^2-81=?

Move 81 to other side of = sign and change its sign from -81 to +81 as follows:

4* x^2=81. Now we divide both sides by 4, we have

x^2=81/4 . Now we take the square root of both sides and we get:

x = 9/2 or

x =4 1/2

Are these angles of a triangle? If so, then why do you have 4 symbols: A, B, C & O?. Sorry, I don't understand your question. You can try to make it CLEARER.Thanks.

Sorry, I don't speak Spanish. But if you want a solution for x, then here it's:

x = (3 sqrt(3) sqrt(27 k^2+68 k-8)-27 k-34)^(1/3)/(3 2^(1/3))+(7 2^(1/3))/(3 (3 sqrt(3) sqrt(27 k^2+68 k-8)-27 k-34)^(1/3))-2/3

Hope you can understand some English.

7/8 - 3/16. We multiply the 1st. by 2/2, so that it becomes: 14/16 - 3/16. The reason we did is to make the bottom numbers the same. So now we subtract the top numbers only. 14 - 3=11

So, we have 11/16. And that's the end.

Yes it Can!.

First check to see if it's divisible by 3. How do you do that.Add the digits together and if their sum is divisible by 3, then the whole number is divisible by 3. So, the first number is 45. Add 4 +5=9. is 9 divisible by 3? yes, because 9/3=3. Therefore the whole number of 45 is divisible by 3. So, 45/3=15 and 15/3=5

Now, do the same thing with 99. 99/3=33. And 33/3=11. And that's the end of the road.

So, 45/99=5/11

Hey guys

Wow TR, another problem well done, how many tests do you even pass because you play video games? 

FYI, Titanium Rome spends 75% of his studying time playing test-related video games than actually using the study guides

from my point of view, it seems he does a lot better on tests when he plays video games (I have no idea how) 

for example, when he can't play video games, he normally gets a C (that was back in the days)

when he started playing video games, it appears on tests he's a lot more focused and appears to use video games as a test

FYI, on one test a long time ago, he didn't play video games at all, and got a C

on one test when he does play video games, he gets an A-A+

how do I know?

this one time, he got a 72% on one History Quiz (just pure studying guides)

parents obviously outraged

he played Galaga for the entire weekend instead of studying

he retook the quiz on Monday, and got 100%

so appearently, the way Titanium Rome studies is very different from the way normal people study

Last Friday, at lunch, we were preparing for a Math test with worksheets in Ms. Nitto's room, we were studying on our worksheets, while TR spent the entire lunch trying to beat his high score on Galaga and raided people in Clash Of Clans

we have not got our scores yet

but what happened was on the test many people were stressed out, including myself, but when I looked a Rome, he seemed to keep it cool and did his work as accurate as if he was shooting a Prototype sniper gun in PG3D and as fast as he was rapidly shooting in Galaga

overall, it appears that TR has a special way of studying tests and quizzes 

Curious how you first discovered to hit = key a second time in order to see result in scientific notation?

Haha Dragonlance, you've underestimate us Video Gamers too much!

This battle goes to the Gamers!

stay tuned next time for Nature VS Games!

Looks sweet. Well done, Admin! You've outdone yourself this time!

Please state one problem at a time & make it VERY CLEAR, so that we might be able to help you. Thanks.

x^3+6 = f(x)+7 x

Dragonfly: You are a first-rate idiot! First, you better learn how to write proper English. Second, your language is offensive & you should be ashamed of yourself!. Third, you throw up tantrums like a 6-year old!. Fourth, you better grow up!. Bye m***n!

If the payments are made annually, then the calculation will look like this:

Annual payment to Bank at 5% comp. annually would be:

$80,242.59 x 20 years=$1,604,851.80-$1,000,000=604,851.80 Total interest paid to the Bank.

2x + m|tanx| ) / [ √(x^2 + x+1) - 1 ]  m=?

m = -(2 x)/(abs(tan(x))) and tan(x)!=0 and sqrt(x^2+x+1)!=1

what is e used for?

"e" is basis of natural logs, just as 10 is the basis for common logs. Its value is approx. 2.718281828......

It's very important in Math. Someday you will learn where it comes from.

calculate the compound interest if you out mortgage loan against a property of 1000000.00 over 20 year term at 5% interest compounded annually

Well, $1000,000 mortgage over 20 years @5%,

First we will calculate the monthly payment. But before we do that we must convert the 5% annual compounding to monthly compounding. So, 5% comp.annually is the same as 4.8889%comp.monthly.

Then we calculate the monthly payment, which is=$6,538.36, which will be paid to the Bank every month for 20 years, or for 240 months.

Then we just multiply 240 X $6,538.36=$1,569,206.40-$1,000,000=$569,206.40 Total interest over 20 years.

2^x - 6 + 2 ^( 3-x) = 0

$$2^x - 6 + 2 ^{3-x}= 0\\ 2^x - 6 + \frac{2 ^3}{2^x}= 0\\\\ (2^{x})^2 - 6*2^x + 8= 0\\\\ let\;\;y=2^x\\\\ y^2-6y+8=0\\\\ (y-2)(y-4)=0\\\\ y=2 or 4\\\\ 2^x=2\;\;or\;\;2^x=4\\\\ x=1\;\;or\;\;x=2 $$

Hi rosala,

>Do I have o confirm everytime I post an answer that I am a human?

fixed

>coming up when I click on them nor do I get any notifs!

this feature will come soon

Admin

Hi Melody!

"logged on", when a user is online, the username is printed in bold

"who is online" bar is on my TODO list

Admin

(4^2)^3 = (4*4)^3 = (4*4)*(4*4)*(4*4) = 4*4*4*4*4*4 = 4^6

Wow I love this new look! Awesome !

Thanks Andre  :)

Can we see who is logged on ?

I answer some of your stupid questions.

You know If you were really smart you should have figured all this out yourself.

1-Can this calculator do integration?

#

Yes