Explanation

Formula: Sum = Average × Number of quantities

Calculation: 215 × 40 = 8600

Explanation

Trivial means معمولی

Major means خاص

Explanation

"Gently" describes how an action is performed, which makes it an adverb of manner.

Adverbs of manner explain the way in which something is done, like gently, quickly, or loudly.

Explanation

Jean Piaget proposed that as children grow, their schemes (mental representations) become more complex, abstract, and realistic through stages of cognitive development.

These stages include sensorimotor, preoperational, concrete operational, and formal operational stages.

Explanation

Given sin θ > 0 and tan θ > 0:

Step 1: Determine the quadrants for sin θ > 0

sin θ > 0 in the 1st and 2nd quadrants.

Step 2: Determine the quadrants for tan θ > 0

tan θ > 0 in the 1st and 3rd quadrants.

Step 3: Find the common quadrant

The common quadrant where both conditions are met is the 1st quadrant.

Explanation

To determine the nature of the points A(3, 2), B(9, 10), and C(1, 16), let's calculate the distances between each pair of points.

Step 1: Calculate the distance AB

AB = √((9 - 3)² + (10 - 2)²)

= √(6² + 8²)

= √(36 + 64)

= √100

= 10

Step 2: Calculate the distance BC

BC = √((9 - 1)² + (10 - 16)²)

= √(8² + (-6)²)

= √(64 + 36)

= √100

= 10

Step 3: Calculate the distance AC

AC = √((3 - 1)² + (2 - 16)²)

= √(2² + (-14)²)

= √(4 + 196)

= √200

= 10√2

Step 4: Determine the nature of the points

Since AB = 10, BC = 10, and AC = 10√2, and AB = BC ≠ AC, the points form an isosceles triangle.

The answer is: The points form an isosceles triangle.

Explanation

Since P ∝ 1/V, it means P × V = constant.

So, 10 × 25 = P × 20

Solving:

250 = 20P ⇒ P = 12.5 N/m²

Explanation

Find a common denominator (LCM of 2, 3, and 4 is 12):

1/2 = 6/12

2/3 = 8/12

3/4 = 9/12

Add them: 6/12 + 8/12 + 9/12 = 23/12.

Explanation

A probability of 1 means that the event is certain to occur.

Probability ranges from 0 (impossible) to 1 (certain).

Explanation

Pandemic means عالمی وباء

Rife means عالمی وباء