Question

pls give me right answer​

Answer 1

x + 2 = 0

x = -2

then ,

x³ -2ax² +16 = 0

(-2)³ - 2(a)(-2)² + 16 = 0

-8 -8a + 16 = 0

-8a = -8

a = 1

option b) 1 is the correct answer

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.