Dan has 12 books on his shelf that he hasn't read, including 7 novels, and the rest are biographies. If he wants to take 5 books with him on vacation, what is the probability that exactly 5 of them are novels?

yes because a quadrilateral is equal to 4 sides and a rhombus has 4 sides so technacly it is a quadrilateral.

question is incomplete.

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".

8

step-by-step explanation:

just put √(2) * √(32) into a calculator. that will make the answer be 8.