Question

1 18. Four addition sentences are shown below. Each addend is a prime number. 2+5=7 5 + 11 = 16 17 + 19 = 36 41 + 2 = 43 How many of the sums are composite numbers? F. 1 G. 2 H. 3 J. 4

Answer 1

The number of the sums that are composite numbers is;

`2`

Step-by-step explanation:

Composite numbers that have more than two factors. they are numbers that can be derived by multiplying two smaller numbers.

From the sums let us identify the composite numbers using their factors;

`\begin{gathered} 7\rightarrow1,7\text{ ----- not composite} \\ 16\rightarrow1,2,4,8,16\text{ ----- composite} \\ 36\rightarrow1,2,3,4,6,12,18,36\text{ ------- composite } \\ 43\rightarrow1,43\text{ --------- not composite} \end{gathered}`

Therefore, the number of the sums that are composite numbers are;

`2`