Question

2. If I = {-5, 4.-3.-2,-1,1,2,3,4,5) and r. ve I, find whether X is closed under the operations
performed on rand .
(a) x + y
(b) x - y
(c) x × y​

Answer 1

Answer:

X+y (may be)

I hope helpfull to you

Please mark as brainliest

Answer 2

Step-by-step explanation:

Now let's find out 9% of 400.

\sf\implies9\% \: of \: 400⟹9%of400

Converting 9% into fraction,

\sf\implies \dfrac{9}{1\!\!\! \not0\!\!\!\not0} \times 4 \!\!\!\not0 \!\!\!\not0⟹1009×400

Cutting off the zeroes,

\sf \implies \dfrac{9}{1} \times 4⟹19×4

Now let's multiply the remaining numbers, since we can't reduce them anymore.

\sf \implies 9 \times 4⟹9×4

On multiplying,

\sf\implies36.⟹36.

9% of 400 students is 36.