They are all perfect squares
(9x+2)(9x+20
(9x+2)^2
Answer:
½
Step-by-step explanation:
There are 6 marbles. 3 are white.
So, it's 3/6 and that's ½
ANSWER
6.4 hours
EXPLANATION
if it takes 10 hours to get 50%, then it will take less number of hours to get 32%
We use proportion to solve this question.
If less more divides.
The number of hours it will take to get 32% is


Hence it will take 6.4 hours to get 32%
3x^2+21x+6=3(3x^2+7x+2)=3(3x^2+6x+x+2)=3[3x(x+2)+(x+2)]=3(3x+1)(x+2)