PLEASE ANSWER ALL I WILL MARK AS BRAINLIEST

Q10. 21 doses; Q 11. 21 doses; Q12. 42 bottles

Step-by-step explanation:

Question 10

(a) Calculate the total ounces

(b) Calculate the number of doses

Question 11

Question 12

(a) Convert ounces to litres

(b) Calculate the number of bottles

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

step-by-step explanation:

divide, then simplify your answer.

1. make -15.66 ÷   5.8 a fraction. then divide.

2. simplify.  

3. final answer.