All Answers 358090 Answers

how does one do math equations??

$${\mathtt{S}} = {\mathtt{4}}{\mathtt{\,\times\,}}{\mathtt{\pi}}{\mathtt{\,\times\,}}{{\mathtt{r}}}^{{\mathtt{2}}}$$

$${\frac{{\mathtt{S}}}{\left({\mathtt{4}}{\mathtt{\,\times\,}}{\mathtt{\pi}}\right)}} = {{\mathtt{r}}}^{{\mathtt{2}}}$$

$${\mathtt{r}} = {\sqrt{{\frac{{\mathtt{S}}}{\left({\mathtt{4}}{\mathtt{\,\times\,}}{\mathtt{\pi}}\right)}}}}$$

7.55 x 10^10

I dont know how but i THINK the answer is 6 if y=0

I am not sure what you mean but the zeros or the roots are the x intercepts which is where y=0

No y will equal zero if any one of those factors =0

ie

x=0       or      x+2=0    or      x+3=0

(9.9 x 10^8) + (5.5 x 10^6)

=(990 x 10^6) + (5.5 x 10^6)

=995.5 x 10^6

=9.955 x 10^8

$$\\(3+\sqrt7)^2 \\\\
=3^2\;+\;2*3*\sqrt7\;+\;(\sqrt7)^2\\\\
=9+6\sqrt7+7\\\\
=16+6\sqrt7$$

its a surd

No real number squared = a negative number

The answer to your question is an imaginary number

$$\\x^2=-169\\
x=\sqrt{-169}\\
x=\sqrt{-1*169}\\
x=\sqrt{169}\sqrt{-1}\\
x=13i\\$$

What is the stroke in front of the 7 for?

What answer ?

I'll give you 3 points for you effort Takahiro  :)

Sorry i've done it now,

I was looking at the wrong equation. :p

Thanks for the help though! :)

(1/2x - 1/5y)^2

$$\\(0.5x)^2\;-\;2*0.5x*0.2y\;+(0.2y)^2\\
=0.25x^2\;-\;0.2xy\;+\;0.04y^2$$

atan(3/sqrt(10))

$$\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{tan}}^{\!\!\mathtt{-1}}{\left({\frac{{\mathtt{3}}}{{\sqrt{{\mathtt{10}}}}}}\right)} = {\mathtt{43.491\: \!519\: \!345\: \!092^{\circ}}}$$

7.8e^10-8 x 1.4 / 7.8e^10-7

$$\frac{7.8e^{10}-8 \times 1.4 }{ 7.8e^{10}-7}=\frac{7.8e^{10}-11.2 }{ 7.8e^{10}-7}$$

Is this the question that you intended??

@Takahiro I'm a little leery of all those zeros in your answers! If you multiply 11 by itself a few times you should keep getting a 1 in the units column. You can't get zero. In other words, your helpful aswers are both wrong.

Remember, for example, 11^5 = 11x11x11x11x11

bubbles 

Thank you so much for this answer! It really helped :)

Thanks Takahiro, that is a good answer

I'm going to try and look at it a bit differently.

11/15, 13/30, 0.4

now half of 15 is 7.5 so 11/15 is more than a half.  

half of 30 is 15 so 13/30 is just a bit less than a half 

0.4 is less than a half

so the BIGGEST one is 11/15

Now 0.4 is 4/10 and 4/10 of 30 is 3*4=12    so 4/10 = 12/30   

so  0.4 is less than 13/30

so

0.4, 13/30, 11/15

If you have a calculator then Takahiros way is easiest.

but I did mine without a calculator.

There is no difference - they are the same thing.  

To make it easier for you. Try to convert them into the same type of numbers. 

TO make a fraction into a demical, just divide the numerator with the denominator.

$${\frac{{\mathtt{11}}}{{\mathtt{15}}}} = {\mathtt{0.733\: \!333\: \!333\: \!333\: \!333\: \!3}}$$

$$(11 \div 15)$$

$${\frac{{\mathtt{13}}}{{\mathtt{30}}}} = {\mathtt{0.433\: \!333\: \!333\: \!333\: \!333\: \!3}}$$

$$(13 \div 30)$$

And 0.4

So...

It would be 0.4,$${\frac{{\mathtt{13}}}{{\mathtt{30}}}}$$,$${\frac{{\mathtt{11}}}{{\mathtt{15}}}}$$

g(x)=3-f(4x)

using translation,reflection,dilations.contractions,

Well it would  be contracted to one quarter its original width.

Then it would be reflected about the x axis. That is reflected about y=0

Then the whole graph would be translated upwards 3 units.

Here are a couple of examples:

Where ever you look, most calculators will give you the same answer Infinity. Well... It really isn't. I spent some of my delicate time to answer these. (Trust me, It was fun)

11^2046=

591,860,291,973,716,720,177,369,928,417,206,124,823,700,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000

7^2013=

1,521,789,378,959,156,124,545,770,305,635,446,432,064,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000