Equavalent expression to (1/3) divided by 4/5

9514 1404 393

Step-by-step explanation:

There are an infinite number of equivalent expressions. A couple of them are ...

  (1/3)/(4/5) = (1/3)(5/4) . . . . . division is multiplication by the inverse

  (1/3)/(4/5) = (5/15)/(12/15) . . . . converted to common denominators*

* this latter form is useful in that the ratio is then the ratio of the numerators, 5/12

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1