A conjunction is a part of speech that connects words, phrases, or clauses.

A preposition shows the relationship between a noun (or pronoun) and other words in a sentence.

Distance = speed × time. Thus, distance = 60 km/h × 3 h = 180 km.

Distance = speed × time = 60 km/h × 3 h = 180 km.

Using the Pythagorean theorem, 7² + 24² = 49 + 576 = 625 = 25², thus it is a right triangle.

Circumference = 2πr = 2 × 3.14 × 7 cm = 43.96 cm.

Let A's age be 3x and B's age be 4x. Then, 3x + 4x = 28, so 7x = 28, giving x = 4. Thus, A's age = 3x = 12.

The sum of the first n natural numbers is given by the formula n(n + 1)/2 = 255. Solving n(n + 1) = 510, we find n = 16.

Let the numbers be x and y. We have x + y = 30 and x - y = 10. Solving these gives x = 20 and y = 10.

To find x, subtract 5 from both sides: 3x = 20 - 5 = 15. Then divide by 3: x = 15 / 3 = 5.

Adding 4 to both sides gives 2x = 14. Dividing by 2 gives x = 7.

Calculating gives 4 × 5 - 5 = 20 - 5 = 15.

According to the order of operations, we first calculate 3 × 2 = 6, then add 7, giving 7 + 6 = 13.

Subtracting 5 from both sides gives 3x = 15. Dividing by 3 gives x = 5.

A noun can function as a subject or object in a sentence, representing a person, place, thing, or idea.

A verb expresses an action or a state of being.

A noun is used to name a person, place, thing, or idea.

An adverb modifies a verb, an adjective, or another adverb, providing more detail about how, when, where, or to what extent.

An adjective provides more information about a noun.

An adverb can describe the manner of an action, answering questions like how, when, where, and to what extent.

An interrogative pronoun is used to ask questions.

An adjective is used to describe or modify a noun or pronoun.

An interjection is used to express strong emotion.

A noun is a part of speech that names a person, place, thing, or idea.

An adverb modifies a verb, an adjective, or another adverb.

A pronoun is a part of speech that replaces a noun to avoid repetition.

A pronoun takes the place of a noun.