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

Wondrous means حیرت انگیز

Normal means عام

Explanation

Hypocrite means منافق

Explanation

Torque = Force × Distance

= 15 N × 0.4 m

= 6 Nm

Explanation

Liquids have smaller intermolecular spaces compared to gases, allowing particles to be more tightly packed.

This closeness results in a higher density in liquids than in gases.

Explanation

He asked if I was going.

This is an indirect question, so it ends with a full stop, not a question mark or colon.

No comma is needed after "asked" in indirect speech.

Explanation

"Kindment" is not a correct English word.

The correct word should be "kindness" — the sentence should read:

"We should treat the young and old with kindness."

Explanation

Let's directly calculate:

x - y = 5

x² - y² = 65

(x + y)(x - y) = 65

(x + y)(5) = 65

x + y = 13

Solving these equations:

x - y = 5

x + y = 13

Adding both: 2x = 18

x = 9

y = 4

Let's check:

9 - 4 = 5

9² - 4² = 81 - 16 = 65

Explanation

"To" is a preposition showing direction or movement toward a place.

It connects the verb "going" with the destination "the cinema."