Thursday

August 21, 2014

August 21, 2014

Total # Posts: 6

**math**

i assume it is read like this: [27/(5+4)] * 19 which is (27/9) * 19 <=> 3*19 = 57
*October 21, 2009*

**Math**

yes she is. and then 2 yellow/ 6 green and so on.
*October 21, 2009*

**Physics**

the options available are rather odd. you want to see if the length has any influence on the time. this you do by testing different lengths and trying to keep the weight the same. My guess would be the last one 2+5, as the lengths are different and the weight change is not ...
*October 20, 2009*

**math (binomial exp)**

the Q is : Given that (1+ax)^n = 1 + 30x +375x^2+.... find the values of the constants a and n . I know that : (i am writing (n 1) as the coefficient of n) (n 1) *ax = 30x (n 2) *(ax)^2 = 375x^2 which can be written as (n 1)* a = 30 (n 2)*a^2 = 375 I solved this only by ...
*October 19, 2009*

**arithmetic**

I have a Q that im trying to solve: it says: the 1st , 2nd, and 3rd term of a geo. sequence is the same as the 1st, 7th and 9th terms of an arith. sequence.: I have to find the common ratio. So i know: a+8d = a(r^2) (1) a+6d = ar (2) but i don't know how to solve this ...
*October 19, 2009*

**Algebra 2 URGENT**

here is my take: you know that x^-1 = 1/x so in the denominator you have (a^-1) - (b^-1) = 1/a - 1/b you need to have the same denominator, which you get by multiplying both in the numerator and denominatorby the other fraction's denominatior so you get: (b/ab)- (a/ab) = (...
*October 19, 2009*

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