What is 0.74 times 9??

6.66

Step-by-step explanation:

Set up as regular multiplication, ignore the decimal for now.

74 * 9 is equal to 666. ♥

Then, count the amount of numbers behind any orignal decimals, and place it accordingly.

So you get 6.66.

The answer is:  [A]:  " 20a − 5b − 9 " .

Explanation:

  (12a + 7b) + (−6a − 9) + (14a − 12b) =
 
   12a + 7b  +  1(−6a − 9) + 1(14a − 12b) =
    
   12a + 7b + (1*-6a) + (1*-9) + (1*14a) + (1* -12b) =
      
    12a + 7b − 6a − 9 + 14a − 12b =  ?

Combine the "like terms:

12a − 6a  + 14a = 20a ; 

7b − 12b =  - 5b ;

and then we have "-9" ;

So, write as:   " 20a − 5b − 9 " ;  which is:  Answer choice:  [A].