3225.......................
Answer:
![\huge\boxed{-\frac{3}{25} }](https://tex.z-dn.net/?f=%5Chuge%5Cboxed%7B-%5Cfrac%7B3%7D%7B25%7D%20%7D)
Step-by-step explanation:
-0.12 in fraction form can be written as:
=> - 12/100
=> - 6 / 50
=> - 3/25
always true
Step-by-step explanation:
Assuming that you mean by true that it has solutions
we have
![3x^2-9x-2=0](https://tex.z-dn.net/?f=3x%5E2-9x-2%3D0)
to know if it has real solutions we need to know if
![b^2-4ac](https://tex.z-dn.net/?f=b%5E2-4ac)
is greater, equal or less than zero
if it's greater it's always
if it's equal it's sometimes
if it's less it's never
so
b=-9
a=3
c=-2
![(-9)^2-4(3)(-2)\\\\=81+24\\\\=105](https://tex.z-dn.net/?f=%28-9%29%5E2-4%283%29%28-2%29%5C%5C%5C%5C%3D81%2B24%5C%5C%5C%5C%3D105)
so it's always