Explanation

 "Behind" is the correct preposition

Because it shows that something is concealed behind the curtain.

Explanation

 At the time of the 1947 Partition, it was proposed that Pakistan would receive 36% of the total military assets (equipment, supplies, etc.) from British India

Explanation

The correct preposition is "by" because it shows the agent (the one giving the treatment) responsible for making the passengers happy.

Explanation

 When changing from direct to indirect speech:

"Will" changes to "would".

"Next week" changes to "the following week".

Explanation

Praiseworthy means deserving approval or admiration

Creditable" means referring to something worthy of praise or honor.

Explanation

 To insert the current date into an Excel cell, use the TODAY() function.

Simply type =TODAY() in the cell and press Enter. 

Explanation

 Nivedita Menon, an Indian academic and political activist,

She has been vocal about the issue of Kashmir and has argued that India is illegally occupying Kashmir.

Explanation

Hazrat Fatima bint Asad is the mother of Ali ibn Abi Talib, also known as Imam Ali.

She also had four other children:

1. Talib,
2. Aqil
3. Jafar
4. Fatima (daughter)

Ali was the youngest of her children and was born in the Kaaba. 

Explanation

${x^}^2+18x+81=0$:

• The first term is x^2, so $a=x$.
• The last term is 81, so ${b^}^2=81$, which means $b=9$ (we take the positive root since the middle term is positive).
• The middle term is 18x. Let's check if it matches 2ab: $2(x)(9)=18x$. It does.

Therefore, the quadratic expression ${x^}^2+18x+81$ can be factored into $(x+9{)^}^2$.

So the factor form of the equation ${x^}^2+18x+81=0$ is $(x+9{)^}^2=0$.

Explanation

 Calculate the discount amount:

Original Price - Selling Price = Discount

$1500 - $1200 = $300

Calculate the discount percentage:

(Discount / Original Price) * 100%

($300 / $1500) * 100%

0.20 * 100% = 20%