Explanation

-7m-[3n-{8m- (4n-10m)}] = ?

= - 7m - [ 3n - { 8m - (-10m +4n)]

= - 7m - [ 3n -( 8m +10m -4n )]

= -7m - (3n  - (18m -4n )

= -7m - (3n +4n - 18m)

= -7m - (7n - 18m)

= 11m  - 7n

Explanation

Explanation

 In February 1960, the President's Cabinet of Pakistan decided to name the new capital of Pakistan as "Islamabad". 

The idea for the city was conceived by President Ayub Khan

It was built to replace Karachi as the capital 

Explanation

Convex lenses converge light rays and are used in reading glasses to magnify close-up text.

A short focal length provides greater magnification, making it ideal for reading.

Explanation

 Zambia News Agency also known as ZANA

It was the official Zambian news agency.

It was established in 1969

It had its headquarters in Lusaka and branches all over Zambia.

Explanation

Corroborate (تصدیق کرنا، حمایت کرنا) 

Undermine (کمزور کرنا، متزلزل کرنا)

Explanation

Truculent means جارحانہ طور پر منحرف یا معاندانہ

Gentle means مہربان ، ہلکے ، یا سلوک میں نرم ہونا

Explanation

If4^a=8^b, find the ratio $frac{a}{b}$

Write both sides with base 2:

$$4^a = (2^2)^a = 2^{2a} \ 8^b = (2^3)^b = 2^{3b} Rightarrow 2^{2a} = 2^{3b} Rightarrow 2a = 3b Rightarrow frac{a}{b} = frac{3}{2}$$

⇒2^2a=2^3b⇒2a=3b⇒a​/b=3/2​

Explanation

"Information about people" is the correct prepositional phrase.

We use "about" to indicate the subject of the information.

Explanation

APPROPRIATE (مناسب) →  Unsuitable (نامناسب)