Explanation

To find how much more money Ahmed needs:

Rs. 98.46 - Rs. 52.25 = Rs. 46.21

Explanation

The set { 0, +, - } contains three distinct elements:

0, +, and −

Explanation

"Frightened" describes the puppy, so it is an adjective.

"Puppy" is a noun, and "looked" is a verb.

Explanation

Al-Hawi by Muhammad bin Zakriya Al-Razi is a comprehensive medical encyclopedia.

It compiled significant medical knowledge from both Greek and Arab sources.

Explanation

40% of 45 = (40 ÷ 100) × 45 = 18.

So, 18 is 40 percent of 45.

Explanation

Multiplying by 100 shifts the decimal 2 places to the right.

Example: 3.45 × 100 = 345.

Explanation

The sentence is in the simple past tense ("He composed").

The passive form uses "was" + past participle ("composed").

So, "A beautiful song was composed by him." is the correct passive voice.

Explanation

"Dear" describes the noun "companion," so it is an adjective.

"Eggs" is a noun, and "Please" is an interjection/request word.

Explanation

To find the perimeter of a rectangle, use the formula:

Perimeter = 2 × (Length + Width)

Given:

Length (L) = 4 cm

Width (W) = 3.4 cm

Calculate:

Perimeter = 2 × (4 + 3.4)

= 2 × 7.4

= 14.8 cm

Explanation

Plant cells contain one large central vacuole that stores water, salts, and nutrients, helping maintain cell rigidity.

Animal cells have multiple small vacuoles scattered throughout the cytoplasm.