Explanation

an = 5n − 7

This is an arithmetic sequence with first term a = -2 and common difference d = 5.

General formula: an = a + (n−1)d = -2 + (n−1)×5 = 5n − 7.

Explanation

Given: logₓ 0.09 = 2

Step 1: Convert to exponential form

x² = 0.09

Step 2: Solve for x

x = √0.09

x = √(9/100)

x = 3/10

x = 0.3.

Explanation

Let's denote Huma's age as x and Ali's age as y.

The given situation translates to:

2x + 3y = 54

This equation directly matches one of the options.

The answer is 2x + 3y = 54.

Explanation

Faisal gave 1/3 of his salary to his mother, which is 21,000 × 1/3 = Rs. 7,000.

The remaining salary after giving to his mother is 21,000 - 7,000 = Rs. 14,000.

He spent 2/5 of the remaining amount: 14,000 × 2/5 = Rs. 5,600.

Explanation

Explanation

Mahavira, also known as Vardhamana, is traditionally regarded as the founder of Jainism, though he was the 24th Tirthankara in Jain tradition.

He reorganized and spread the existing teachings, establishing Jainism as a major religious movement in 6th century BCE India.

Explanation

Classical conditioning occurs when a neutral stimulus becomes associated with a meaningful response through repeated pairing.

It was first described by Ivan Pavlov in his experiments with dogs.

Explanation

Cobalt chloride paper is used to detect moisture; it turns from blue to pink in the presence of water vapor.

This change helps demonstrate transpiration as water evaporates from the leaf surface.

Explanation

Factors are numbers that divide 16 exactly with no remainder.

16 ÷ 1 = 16, ÷2 = 8, ÷4 = 4, ÷8 = 2, ÷16 = 1.

Explanation

"Blew" is the past tense of "blow," which fits the sentence context.

The sentence becomes: "The wind blew strongly during the storm."