Explanation

This is an example of the associative property of multiplication:

  a × (b × c) = (a × b) × c

So, 8 × (6 × 7) = (8 × 6) × 7

Explanation

a^2 (-2b)^2 = a^2 × 4b^2 = 4a^2b^2

Explanation

Degree of a term = sum of the powers of variables in that term.

Highest degree term is 8x²y³ with degree 2 + 3 = 5.

Explanation

Copper, silver, aluminum, gold, steel, and brass are common conductors of electricity.

The most highly conductive metals are silver, copper, and gold

Silver is the first-best conductor of heat.

Copper is the second-best conductor of heat.

Explanation

ضابطہ کا مطلب ہوتا ہے قاعدہ یا اصول جو کسی نظام یا طریقہ کار کو منظم کرنے کے لیے بنایا جاتا ہے۔

یہ لفظ اکثر قوانین، اداروں یا نظم و ضبط کے سیاق میں استعمال ہوتا ہے۔

Explanation

Chords that are equally distant from the center of a circle are always equal in length (congruent).

This is a fundamental property of chords in a circle.

Explanation

Loudness is how the intensity of a sound is perceived by the human ear.

Greater intensity → louder sound.

It is measured in decibels (dB).

Explanation

The given solution is already solved:

5x + 8 = 23

5x = 23 - 8

5x = 15

x = 15/5

x = 3

Explanation

F ∝ m1m2

If both masses are doubled, F' ∝ (2m1)(2m2) = 4m1m2

So, F' is 4 times F.

Explanation

60% of 50 = 60/100 × 50

= 0.6 × 50

= 30