Very Easy maths question on exponents?

625^-3/4 i know this equals 1/125



for (-32)^3/5 this equals -8 right? I was wondering if someone could explain to me what happens to the 1 and why it is not needed in the answer, but compared to the top one it is needed.
first, yes (-32)^(3/5) = -8

the difference between the two is the negative sign in the exponent.

if you ignore the negative sign at first, you get 125^(-1)...

In other words 625^( 3/4) is 125.



Any number to a -1 power will be equal to one divided by the number. Its a standard exponent property.
The first question, the exponent is negative, according to the exponent rule you have to put it under 1 as a fraction.



Second question, the exponent is positive therefore no fraction is needed.
we know that 10^-2= 10^2 so similarly:



625^-3/4 = 1/ (625^3/4)



obviously 5^4=625 thus



1/(625^3/4) = 1/(5^4^(3/4))



we know 2^5^3= 2^(5*3) = 2^15, similarly



1/(5^4^(3/4) = 1/5^(4*3/4) = 1/5^3



5^3 = 125 therefore



1/5^3 = 1/125



proved



cheers

CALCULUS- sketch a graph of ONE function that satisfies all of the given conditions?

so my teacher gave us the following problem.. and I don

What is the remainder when 9^6 - 11 divided by 8?

plz b fast.......i stuck up at this question....
9 = 1 (mod 8)



right? Well, then:



9^6 = 9 * 9 * 9 * 9 * 9 * 9 = 1 * 1 * 1 * 1 * 1 * 1 = 1 (mod 8)



So:



9^6 - 11 = 1 - 3 = 6 (mod 8)
(9^6-11) / 8



=(531,441-11) / 8

=531,430 / 8

=66428.75
=

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So according to vertical motion, you add the accelaration to the initial velocity forever. Therefore, if the initial velocity is 6 and accelaration is -1, it should be:

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From 0 to 1 sec, the average velocity is (6 5)/2 = 5.5

The second second, the average is 4.5.

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Add them up and you get 18.
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if the period of f(x)=sin(kx) where k cannot be zero, is A and the period of g(x)=absolute value(sinkx), where k cannot zero, is B then



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Whats the derivative of (log(base x)e)?

Hey i just need help answering the question above. thanks
By the Change-of-base formula:



log_x(e) = ln(e)/ln(x) = 1/ln(x) = [ln(x)]^(-1).



Taking derivatives with the Chain Rule yields:



d/dx log_x(e)

=

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Double replacement reaction





copper(II)Chloride oxalic acid --------------

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Finite help..please help..this is a very difficult problem?

two teams A and B are playing in a tournament where the first team to win five games wins. How many sequences are there? There are no ties.....





PLease Help.Please show me how to do this
If team A wins the tournament, then it wins the last game (because once they win the 5th game, the tournament ends). So list all sequences with 4 wins for A and either 0, 1, 2, 3 or 4 wins for B; and put a win for A at the end of all of them:



4 wins for A and 0 wins for B obviously has only one sequence: AAAA

4 wins for A and 1 win for B has 5 sequences: BAAAA, ABAAA, AABAA, AAABA and AAAAB. This is expressed as 5C1, or

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Is this math right(for summer hw)?

For a problem i have on homework, im trying to figure out how far away lighting is by the distance of the lighting and the thunder.

There is a 10 second delay between lightning and thunder. The speed of sound is 761 mph. So too figure out the distance you have too divide speed of sound with the time. so too figure out the time you next have too figure out how much of an hour is 10 seconds. so 10 / 60 = 0.166666667



Then divide that with the speed of sound and you get 126.833334.



So the question is....

Did I figure out the answer or did I do something wrong?
761 mph/60 minutes/60 seconds = .211388889 MPS = 761/3600 MPS



We can also use scientific conversion to show this:



761 MPH x ( [1/60 minutes]/1 hour) x ( [1/60 seconds]/1 minute) = 761 MPH x 1/60 MPM x 1/60 MPS = .211388889 MPS = 761/3600 MPS



That is now in seconds. So multiply by 10 and move the decimal over.



The lightning is 761/360 miles away.



2.11388889 miles = 25.36667 blocks = 3401.981164 m = 11161.33333 ft
Just take 761 ft and multiply it by 10 sec. If it took ten seconds for the thunder to reach you and sound travels at 761 feet per second. 10 X 761 = Number of feet away. 7610 ft.

It

I

Can someone PLEASE simplify this expression? BEFORE TOMORROW!?

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The

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Solve the following equation : x 30x 225 =0
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x 30x 225 =0



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This is my homework task and i

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Find the intersection of -x 4y = 9 and 2x

pleaseeee
Multiply the first equation by 2:

-2x 8y = 18...(i)

Second equation:

2x-5y = -12...(ii)



Now just add (i) and (ii):

-2x 8y = 18

2x-5y = -12

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

3y = 6

Divide both sides by 3:

y = 2



Plug the value of y in either equation:

2x-5y = -12

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Add 10 to both sides:

2x = -2

Divide both sides by 2:

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http://en.wikipedia.org/wiki/Magnetic_fi



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To compare, we should make everything a power of 9. That way, the largest exponent will be the largest number, and the smallest exponent will be the smallest number. We have:



9^(9^9)

(9^9)^9

9^99



Only the second one is not an exponent of 9, but we can change that with index laws:



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Our three indices are:



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well i have 99999^(99999) problems but a female dog is not one.
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(10) For the reaction SO2(g) NO2(g) SO3(g) NO(g), the equilibrium constant is 18.0 at 1,200

(10) For the reaction SO2(g) NO2(g) SO3(g) NO(g), the equilibrium constant is

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Show the work please



thanks
this is basic chemistry. If you want other people to do your work for you then you shouldnt have taken the class in the first place.

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I know it

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http://www.nuforc.org/ -



Just go onto the site above and fill out a report form. :)
You just reported it. And, as is often the case with such things, nobody important is interested.
mufon has a great site to
Report it to the nice men in the white coats

oh oh, they