If a number is chosen randomly from the set of numbers {1,2,3,4,..., 17), find the probability of getting a composite number.

Explanation:

The set of primes in that given list is {2,3,5,7,11,13,17}

The set of composites is {4,6,8,9,10,12,14,15,16}. So it's basically everything but the prime numbers. We don't include the value 1 in either list since 1 is neither prime nor composite.

Counting the number of items in the list {4,6,8,9,10,12,14,15,16} leads to 9 items. This is out of 17 values total in the original list

The probability of getting a composite value is therefore 9/17

your answer is a

step-by-step explanation:

4*4*4*4=256

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".