Explanation

A.M. = ((x - 3) + (x + 5))/2

= (2x + 2)/2

= x + 1

Explanation

The geometric mean between 4 and 16 is √(4 × 16) = √64 = 8.

Explanation

In C, 9 and 4 are integers, so 9 / 4 = 2 (integer division, fractional part is discarded).

Then, 2 * 2 = 4

Explanation

Hardware refers to the physical components of a computer system, like the keyboard, mouse, CPU, and monitor.

It contrasts with software, which refers to programs and logic.

Explanation

If A is a non-singular square matrix, then its inverse A⁻¹ exists.

The product AA⁻¹ = I, where I is the identity matrix.

Explanation

In any triangle, the greatest angle is always opposite the longest (greatest) side.

This is a basic property of triangles.

Explanation

DFD stands for Data Flow Diagram.

It is used to represent the flow of data in a system.

It shows how data moves between processes, data stores, and external entities.

Explanation

An Ogive is a graph that shows cumulative frequencies, either less than or greater than a certain class limit.

It's used to determine medians, percentiles, and quartiles visually.

Explanation

Number of absences is a countable quantity (0, 1, 2, ...), so it's discrete data.

Discrete data deals with whole numbers, not fractions or decimals.

Explanation

Relative frequency is the ratio of the frequency of a class to the total number of observations.

When you add the relative frequencies of all classes, the total must equal 1 (or 100%).