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Re: EXPONENTS  TOPIC_SOLVED

can anyone explain the difference between ( i will just use these numbers as examples) -27 4/3 and (-27) 4/3 I am getting confused when the difference is when the number is just negative and when there are parenthesis around it I see both as -27\frac{4}{3}=\frac{-27\cdot4}{3}=-\frac{108}{3}=-36 or ...
by Martingale
on Mon Mar 30, 2009 7:02 pm
 
Forum: Intermediate Algebra
Topic: Exponents: explain difference between -27 4/3, (-27) 4/3
Replies: 4
Views: 2031

Re: EXPONENTS  TOPIC_SOLVED

MOUSETAILS wrote:i think i typed it wrong here is a better example of what i am confused with:

-9^2

(-9)^2




by Martingale
on Mon Mar 30, 2009 7:24 pm
 
Forum: Intermediate Algebra
Topic: Exponents: explain difference between -27 4/3, (-27) 4/3
Replies: 4
Views: 2031

Re: how many cows and how many chickens does the farmer have?  TOPIC_SOLVED

farmer has a total of 21 cows and chickens.togteher the animals have a total of 54 legs.how many cows and how many chickens does the farmer have? i got 15 chickens & 6 cows.how do u do the math 2 get the ans? let x be the number of cows let y be the number of chickens then x+y=21 and the number...
by Martingale
on Tue Mar 31, 2009 7:32 pm
 
Forum: Arithmetic
Topic: how many cows and how many chickens does the farmer have?
Replies: 2
Views: 2673

Re: Factor  TOPIC_SOLVED

aretuta wrote:Help.
I'm having trouble solving this one.

x2-12xy+36y2



and

so
by Martingale
on Wed Apr 01, 2009 1:38 am
 
Forum: Intermediate Algebra
Topic: Factoring x2 - 12xy + 36y2
Replies: 3
Views: 2962

Re: value of sqrt(2sqrt(2sqrt(...))) (I'm told there's a trick?)  TOPIC_SOLVED

the trick where you get \sqrt{2x}=x only works if we know that the original sequence of numbers converges. Therefore, before one uses this technique you should determine if it converges first then use the 'trick'. Otherwise you could get the wrong answer. Also, there is only one solution to the prob...
by Martingale
on Wed Apr 01, 2009 11:52 am
 
Forum: Advanced Algebra ("pre-calculus")
Topic: value of sqrt(2sqrt(2sqrt(...))) (I'm told there's a trick?)
Replies: 3
Views: 2950

Re: find a quick, easy metod to compute the first 100 number, fr  TOPIC_SOLVED

babyZ wrote:i am stuck the question is, Find a quick, easy method to compute the first 100 number, from 1 to 100. I can`t use a calculator as a metod for this problem


What do you mean by 'compute the first 100 number'?
by Martingale
on Wed Apr 01, 2009 1:32 pm
 
Forum: Arithmetic
Topic: find a quick, easy metod to compute the first 100 number, fr
Replies: 5
Views: 3193

Re:  TOPIC_SOLVED

I'm not sure, but this is my thinking so far... If you imagine removing the circle from the middle and sliding the parabolas toward each other, their symmetry tells you that they will touch (be tangent to each other) along the line y = x. This means that their slopes will have to be m = 1 at the po...
by Martingale
on Wed Apr 01, 2009 6:27 pm
 
Forum: Geometry
Topic: Circles and Parabola: find smallest circle touching 2 parabs
Replies: 4
Views: 3379

Re: Steven went to a restaurant whose menu featured four appetiz  TOPIC_SOLVED

maggiemagnet wrote:Steven went to a restaurant whose menu featured four appetizers, five salads, three entrees, and four desserts. How many different combinations could he order if a dinner included one of each item?

It's just 4*5*3*4, right? Thank you.


yes
by Martingale
on Wed Apr 01, 2009 10:18 pm
 
Forum: Discrete Math
Topic: Steven went to a restaurant whose menu featured four appetiz
Replies: 2
Views: 1866

Re: what is fraction for decimal .151515 (the 15 keeps on going)  TOPIC_SOLVED

nicknation wrote:I would like to know what the fraction is for the decimal .151515 (the 15 keeps on going )?


let x=.1515...

then 100x=15.1515...

subtract x from 100x


100x=15.1515...
- x=.1515...

99x=15
x=15/99
by Martingale
on Wed Apr 01, 2009 11:50 pm
 
Forum: Pre-Algebra
Topic: what is fraction for decimal .151515 (the 15 keeps on going)
Replies: 6
Views: 3925
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