Explanation

He went to the hospital.

"Went" is the past tense form of the verb "go".

It shows the action was completed in the past.

Explanation

Water is crucial for vital biological processes like digestion, circulation, and temperature regulation.

It also acts as a solvent, transporting nutrients and waste in living organisms.

Explanation

Alone means اپنے آپ سے رہنا ، کوئی دوسرا شخص موجود نہیں ہے

Without any other people means کسی دوسرے لوگوں کے بغیر

Explanation

Cost of 120 copies = Rs. 6000

Cost of 1 copy = Rs. 6000 / 120

= Rs. 50

Cost of 400 copies = Rs. 50 × 400

= Rs. 20000

Explanation

Given the proportion:

6 : x :: 9 : 12

We can write it as:

6/x = 9/12

Cross-multiplying:

6 × 12 = 9 × x

72 = 9x

x = 72/9

x = 8

Explanation

The given equation (a + b) + c = a + (b + c) is the standard form of the Associative Property of Addition.

It states that the grouping of numbers in an addition operation does not change the sum.

Explanation

Fertilization in frogs involves the fusion of male and female gametes — a clear example of sexual reproduction.

The budding, fission, vegetative propagation are all forms of asexual reproduction.

Explanation

The associative property of the union states that:

A ∪ (B ∪ C) = (A ∪ B) ∪ C

This means that the order in which we perform the union operation does not change the result.

Explanation

A cyclic quadrilateral is a four-sided figure where all vertices lie on the circumference of a single circle.

Key property: Opposite angles sum to 180°.

Explanation

(x - 2)(x + 3) = 0

This implies:

x - 2 = 0 or x + 3 = 0

x = 2 or x = -3