All Answers 358460 Answers

+118725

0

The absolute value of anything has to be positive
Therefore it is a nonsense question and there can be no answers.

MelodyOct 8, 2013

+3146

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[input]solve( x+y=6, x^2-y^2=12 )[/input]

x+y=6
x=6-y

x^2-y^2=12
(6-y)^2-y^2=12
36-2*6*y+y^2-x^2=12
36-12y=12
-12y=-24
y=24/12
y=2

x=6-y=6-2=4
x=4

adminOct 8, 2013

0

GuestOct 8, 2013

0

1000000000*100/2.8942
34551862345.3804160044226384

GuestOct 8, 2013

0

8600/126+(126/1.7)=x

GuestOct 8, 2013

0

GuestOct 8, 2013

0

P.S. Yesterday i tried to solve it like 10 times in various ways it took me about 5mins (which never takes me so long), but i didn't figure out it.

GuestOct 8, 2013

0

x=6-y

(6-y)^2-y^2=12

36-12-y^2+y^2-y^2=12

36-12-y^2=12

-y^2=12-36+12

-y^2=-12

y=sqrt(12) <-- Which isn't correct

GuestOct 8, 2013

+118725

0

I think I've got it

The speed of light is 299,792,458 metres per second
Blue light : 459 x 10 ^-9 metres/wavelength

frequency is measured in Hertz which is wavelengths per second
(m/s) divided by (m/wavelengths) gives (wavelengths per second) The metres cancel out.

So frequency
=wavelengths / sec
=speed of light / wavelength
=299,792,458 / (459 x 10 ^-9)
=6.5314261 x 10 ¹⁴ Hertz
=653,143 GHz (to the nearest GHz)

I'm pretty sure that this is correct.

MelodyOct 8, 2013

0

P for Parenthesis, E for Exponents, M for Multiplication, D for Division, A for Addition, S for Subraction

GuestOct 8, 2013

+118725

0

Well, that depends, just how big is a big cupcake?

MelodyOct 8, 2013

0

If you ever encounter this problem again, and you have a TI-84 calculator, type in the decimal, press math, make sure you're in the tab 'math', choose 'frac>', and press enter twice.
It will give you the fraction in simplest form.

GuestOct 8, 2013

0

so 0.024 is basically 24/1000
simplify that by dividing both the numerator and denominator by 8
that gives u 3/125 as the simplest fraction

GuestOct 8, 2013

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so this is how u simplify:
4n-2+7n=20 <-equation
4n+7n-2=20 <-put like terms together
11n-2=20 <-combine like terms
+2 +2
11n=22 <-move the 2 to the other side
/11 /11
n=2

GuestOct 8, 2013

0

so the short answer is 19/4, =4.75
How u get there:
use the order of operations, so
-first multiply 7/8 by 2/1
-then add 3

GuestOct 8, 2013

+2

0

If you divide the speed of light, 3.00e-34 Js, by the wavelength, 4.59e-7, then you'll get the frequency. I think its (6.54e-28) power but I'm not completely sure.

camgreen17Oct 8, 2013

0

Melody:
what does N and m stand for?
Is there more to this question?

the question is. The tendon exerts a force of magnitude
790 N. Determine the torque (magnitude
and direction) of this force about the
ankle joint. (3.6X10^-2m)cos55 was a Given in the picture.

i saw some solution that t=(720N)(3.6X10^-2m)cos55 = 15N-m is the name.
i was wondering how did they compute and got that answer(15N-m).. can anyone help?

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GuestOct 8, 2013

+118725

0

I won't do your question but I will do a similar one and you can copy the technique.

1362.98

There needs to be just one non zero number in front of the decimal point: 1.36298
I have moved the decimal point 3 places, so the power will be 3
If it is a little number, less than 1, then the power will be negative
But, this is a big number, more than 9 so the power will be positive, that is, +3
so the answer is
1362.98 = 1.36298 x 10^3

i hope this helps and that you learn from it.

MelodyOct 8, 2013

+118725

0

y=x squared is a concave up parabola with the vertex at the origin.
When you plus two you just raise every point up by 2. So the vertex moves up to (0,2)

MelodyOct 8, 2013

+118725

0

(3 hours/ 12 braclets) * 50 braclets = 3/12*50 hours (the braclets cancel out.) Yes, you really can do this.

MelodyOct 8, 2013

+118725

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Well, in that case I think the answer would have to be irrational.
Good luck with the Beal Conjecture.
Thanks for getting back to me, I really appreciate it.

Do you know why you are not listed as a member?
I am just trying to work out how this site works.

MelodyOct 8, 2013

+118725

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You can use the fraction button or you can use the divide button.

MelodyOct 8, 2013

Oct 7, 2013

+118725

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I assume you mean 18% per year, and there are 12 months in a years, so what do you think the answer might be?

MelodyOct 7, 2013

+118725

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Is this a time?
It will be negative 16 seconds

MelodyOct 7, 2013

+118725

0

Say you want to divide 2 by 4 ,
this would be the same as dividing (2*10) by (4*10) OR
this would be the same as dividing (2*7) by (4*7)
They all equal 1/2

you use this idea when you divide decimal (unless you use a calculator). You'd never use 7 just 10, or 100, or 1000 etc

Say you want to divide 0.2 by 0.005
I can't divide by 0.005 but if I multiply it by 1000, I can divide by 5
so
0.2/0.005 becomes (0.2*1000)/(0.005*1000) = 200/5 = 40

It is the one on the bottom that has to be a whole number. It is much easier to see what you are doing if you write your divisions as upright fractions. Where you can see the top and the bottom easily.
Do you know how to do 0.2*1000?

If you would like me to explain anything a bit better just let me know.
I hope I have been helpful.
There are 3 zeros and 1000 is a big number (bigger than 1) so you move the point 3 places in a direction to make the number bigger.

MelodyOct 7, 2013

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